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Diverse layer between spherical core and cover

Subclass of:

473 - Games using tangible projectile

473131000 - GOLF

473351000 - Ball

473371000 - Particular unitary or layered construction

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
473376000 Plural diverse layers 188
473375000 Hollow core 2
20100160087GOLF BALL - A golf ball 06-24-2010
20100056301GOLF BALL - A golf ball 03-04-2010
Entries
DocumentTitleDate
20100160084MULTILAYER CORE GOLF BALL HAVING HARDNESS GRADIENT WITHIN AND BETWEEN EACH CORE LAYER - A multi-layered core golf ball wherein each core layer comprises its own specific hardness gradient in addition to an overall specific hardness gradient from one core layer to the next. The inner core layer comprises a plurality of hardnesses of from about 40 Shore C to about 85 Shore C, a diameter of about 30 mm or lower, and a first outer surface comprising a hardness greater than a hardness of a geometric center to define a positive hardness gradient of about 20 Shore C or greater. The outer core layer comprises a plurality of hardnesses of from about 65 Shore C to about 95 Shore C, a thickness of about 10 mm or lower, and a second outer surface comprising a hardness greater than that of an inner surface to define a positive hardness gradient of about 20 Shore C or lower. A further outer core layer hardness, disposed in a region extending between about 10% and about 90% of the distance from the inner surface to the second outer surface, is greater than that of the inner and second outer surfaces. Also, the hardness of second outer surface is greater than that of the geometric center to define a positive hardness gradient of about 30 Shore C or greater.06-24-2010
20100160082Golf Balls having a Casing Layer Formed from a Single High Acid Based Ionomer with an Ultra High Melt Flow Index Maleic Anhydride Terpolymer - The present invention is a multi-piece golf ball having a casing layer comprising of a single high acid based ionomer that is blended with an ultra high melt flow index maleic anhydride terpolymer with a melt flow index of at least 70 g/10 min. at 190° C. The maleic anhydride terpolymer comprises a copolymer of ethylene-alkyl acrylate-maleic anhdydride. The alkyl acrylate is selected from methyl, or ethyl, or propyl, or butyl, or pentyl acrylate. The maleic anhydride content in the terpolymer is 1 to 4% of the total blend by weight. The single high acid ionomer such as a copolymer of ethylene-acrylic or methacrylic is partially neutralized with a suitable cation such as lithium, sodium, magnesium, zinc, or potassium.06-24-2010
20100087276MULTILAYER CORE GOLF BALL HAVING HARDNESS GRADIENT WITHIN AND BETWEEN EACH CORE LAYER - The present invention is directed to an improved multi-layered core golf ball wherein each core layer comprises its own specific hardness gradient (positive, negative or a combination) in addition to an overall specific hardness gradient from one core layer to the next. In a first embodiment, the golf ball comprises a two layer core and a cover disposed about the two layer core. The two layer core comprises an inner core layer and an outer core layer disposed about the inner core layer. The inner core layer comprises a geometric center and a first outer surface. The inner core layer is formed from a substantially homogenous formulation, comprises a diameter of about 30 mm or lower, and has a plurality of hardnesses of from about 50 Shore C to about 80 Shore C. The geometric center comprises a first hardness and the first outer surface comprises a second hardness, wherein the first hardness is greater than the second hardness to define a negative hardness gradient about 23 Shore C or less. The outer core layer comprises an inner surface and a second outer surface. The outer core layer is formed from a substantially homogenous formulation, comprises a thickness of about 10 mm or lower, and has a plurality of hardnesses of from about 40 Shore C to about 75 Shore C. The inner surface comprises a third hardness and the second outer surface comprises a fourth hardness, wherein the fourth hardness is greater than the third hardness. The outer core layer further comprises a fifth hardness disposed between the inner surface and the second outer surface in a region extending between about 10% and about 90% of the distance from the inner surface to the second outer surface, wherein the fifth hardness is less than third hardness and the fourth hardness. Finally, the fourth hardness is less than the first hardness to define a two layer core having a negative hardness gradient of no greater than 15 Shore C. The a region may alternatively extend radially from the geometric center about 13 mm to about 20 mm and the diameter of the inner core layer may be about 26 mm or less. The present invention is also directed to a golf ball having certain Shore D hardnesses as disclosed herein.04-08-2010
20090124419Silane-Based Gradient-Initiating Solution for Thermoplastic Core having a Positive Hardness Gradient - A golf ball comprising a thermoplastic core having an outer diameter of 1.51 inches to 1.59 inches and having an outer surface and a geometric center, each having a hardness; an outer cover layer; and an inner cover layer disposed between the core and the outer cover layer; wherein the thermoplastic core has been exposed to a gradient-initiating solution comprising a silane having the formula:05-14-2009
20130079179MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball having a core, a cover of at least one layer encasing the core, and a layer of paint applied to a surface of an outermost layer of the cover, wherein the outermost cover layer or an inner cover layer adjacent to the outermost layer is formed of a resin composition which includes: 03-28-2013
20100331114GOLF BALL - A golf ball which has excellent abrasion-resistance and spin performance is provided. The golf ball of the present invention includes a core and a cover covering the core and containing polyurethane as a resin component, wherein the polyurethane has, as a constituting component, a polyisocyanate component, a high-molecular weight polyol component, and a mixture of cis-1,4-cyclohexane dimethanol and trans-1,4-cyclohexane dimethanol as a chain extender.12-30-2010
20090124425HIGH PERFORMANCE GOLF BALL HAVING A REDUCED-DISTANCE - A golf ball including a core and a cover layer, wherein the golf ball has a weight of about 1.39 oz to about 1.62 oz, and at a Reynolds number of about 138,000 and a non-dimensional spin ratio of about 0.142, the golf ball has a lift-to-weight ratio of greater than about 0.9 and a drag-to-weight ratio of greater than about 1.2.05-14-2009
20090124424HIGH PERFORMANCE GOLF BALL HAVING A REDUCED-DISTANCE - A golf ball including a core and a cover layer, wherein the golf ball has a weight of about 1.39 oz to about 1.62 oz, and at a Reynolds number of about 161,000 and a non-dimensional spin ratio of about 0.122, the golf ball has a lift-to-weight ratio of greater than about 1.2 and a drag-to-weight ratio of greater than about 1.5.05-14-2009
20090124423HIGH PERFORMANCE GOLF BALL HAVING A REDUCED-DISTANCE - A golf ball including a core and a cover layer, wherein the golf ball has a weight of about 1.39 oz to about 1.62 oz, and at a Reynolds number of about 207,000 and a non-dimensional spin ratio of about 0.095, the golf ball has a lift-to-weight ratio of greater than about 1.7 and a drag-to-weight ratio of greater than about 2.4.05-14-2009
20090124422HIGH PERFORMANCE GOLF BALL HAVING A REDUCED-DISTANCE - A golf ball including a core and a cover layer, wherein the golf ball has a weight of about 1.39 oz to about 1.62 oz, and at a Reynolds number of about 230,000 and a non-dimensional spin ratio of about 0.085, the golf ball has a lift-to-weight ratio of greater than about 1.9 and a drag-to-weight ratio of greater than about 3.0.05-14-2009
20090124421Golf ball - An object of the present invention is to provide a golf ball comprising a core consisting of a center and at least one intermediate layer covering the center, and a cover covering the core, wherein the cover is made from a cover composition containing, as a resin component, a thermoplastic polyurethane (A) and a polyisocyanate mixture (B) in which a urethane prepolymer (b-1) having at least two isocyanate groups is dispersed in a thermoplastic resin (b-2) which does not substantially react with an isocyanate group; and wherein the cover composition has a slab hardness of more than 60 and not more than 75 in Shore D hardness, and at least one piece or one layer of the intermediate layer is formed from a low hardness intermediate layer composition which has a slab hardness of 40 or less in Shore D hardness.05-14-2009
20100273577MULTILAYER CORE GOLF BALL HAVING HARDNESS GRADIENT WITHIN AND BETWEEN EACH CORE LAYER - The present invention is directed to an improved multi-layered core golf ball wherein each core layer comprises its own specific hardness gradient (positive, negative or a combination) in addition to an overall specific hardness gradient from one core layer to the next. In a first embodiment, the golf ball comprises a two layer core and a cover disposed about the two layer core. The two layer core comprises an inner core layer and an outer core layer disposed about the inner core layer. The inner core layer comprises a geometric center and a first outer surface. The inner core layer is formed from a substantially homogenous formulation, comprises a diameter of about 30 mm or lower, and has a plurality of hardnesses of from about 50 Shore C to about 80 Shore C. The geometric center comprises a first hardness and the first outer surface comprises a second hardness, wherein the first hardness is greater than the second hardness to define a negative hardness gradient about 20 Shore C or less. The outer core layer comprises an inner surface and a second outer surface. The outer core layer is formed from a substantially homogenous formulation, comprises a thickness of about 10 mm or lower, and has a plurality of hardnesses of from about 45 Shore C to about 65 Shore C. The inner surface comprises a third hardness and the second outer surface comprises a fourth hardness, wherein the fourth hardness is greater than the third hardness. The outer core layer further comprises a fifth hardness disposed between the inner surface and the second outer surface in a region extending between about 10% and about 90% of the distance from the inner surface to the second outer surface, wherein the fifth hardness is less than the third hardness and the fourth hardness. Finally, the fourth hardness is less than the first hardness to define a two layer core having a negative hardness gradient of no greater than about 20 Shore C. In a second embodiment, the dual layer core differs from that of the first embodiment at least in that: The outer core has a plurality of hardnesses of from about 50 Shore C to about 80 Shore C, the first hardness is greater than the second hardness to define a negative hardness gradient about 23 Shore C or less; there is no fifth hardness; and the fourth hardness is similar to the first hardness. The present invention is also directed to a golf ball having certain Shore D hardnesses as disclosed herein.10-28-2010
20130072323Method Of Golf Ball Compression Molding - A method of making a golf ball may include forming a spherical inner core layer, forming two hemispherical shells in a compression mold, and assembling the two hemispherical shells as an outer core layer around the inner core layer. In addition, the method may include curing the two hemispherical shells to form a unitary outer core layer by compression molding the shells around the inner core layer at a temperature that causes the inner core layer to melt.03-21-2013
20090270203GOLF BALL - An object of the present invention is to provide a golf ball having excellent durability and flight distance. The present invention provides a golf ball comprising: a core consisting of a center and one or more intermediate layers covering the center; and a cover covering the core, wherein, at least one piece or one layer of said intermediate layers is formed from a highly elastic intermediate layer composition that contains a highly elastic resin (A) having a flexural modulus in a range from 700 MPa to 5000 MPa and an ionomer resin (B) having a flexural modulus in a range from 150 MPa to 1000 MPa in an amount ratio ((A)/(B)) of the highly elastic resin (A) to the ionomer resin (B) being (20 mass % to 80 mass %)/(80 mass % to 20 mass %) (the total is 100 mass %).10-29-2009
20090270202GOLF BALL - A golf ball 10-29-2009
20120115644GOLF BALL COMPOSITIONS - Disclosed herein are soft and stiff compositions, i.e., compositions which have a flexural modulus that is greater than the value that is expected based on the composition's hardness. The compositions preferably have a hardness/modulus relationship represented by the formula05-10-2012
20120115643GOLF BALL COMPOSITIONS - Disclosed herein are soft and stiff compositions, i.e., compositions which have a flexural modulus that is greater than the value that is expected based on the composition's hardness. The compositions preferably have a hardness/modulus relationship represented by the formula05-10-2012
20120115641GOLF BALL COMPOSITIONS - Disclosed herein are soft and stiff compositions, i.e., compositions which have a flexural modulus that is greater than the value that is expected based on the composition's hardness. The compositions preferably have a hardness/modulus relationship represented by the formula05-10-2012
20120115640GOLF BALL COMPOSITIONS - Disclosed herein are soft and stiff compositions, i.e., compositions which have a flexural modulus that is greater than the value that is expected based on the composition's hardness. The compositions preferably have a hardness/modulus relationship represented by the formula05-10-2012
20090011861GOLF BALLS CONTAINING INTERPENETRATING POLYMER NETWORKS - The present invention is directed to a golf ball that contains an interpenetrating polymer network, or IPN, including at least two polymeric components. These IPNs may be present in any golf ball layer, although in an intermediate or cover layer in one preferred embodiment. The present invention is also directed to methods of forming a golf ball containing an IPN in one or more of the layers.01-08-2009
20100087275GOLF BALL - An object of the invention is to provide a golf ball excellent in the durability at the normal and low temperatures, flight distance, and shot feeling on the shots. Another object of the present invention is to provide a golf ball excellent in a direction stability on the shots. The present invention provides a golf ball comprising: a core consisting of at least one layer; and a cover covering the core and having a thickness ranging from 0.3 mm to 1.0 mm, wherein the cover is formed from a cover composition that contains as a resin component, (A) a highly elastic polyamide resin (B) a metal-neutralized product of binary copolymer and/or ternary copolymer, and (C) a resin having a polar functional group in a specific amount, and wherein the cover composition has a slab hardness ranging from 65 to 75 in Shore D hardness.04-08-2010
20130165265GOLF BALL - An object of the present invention is to provide a golf ball having an excellent properties like flight distance and low temperature durability. The present invention provides a golf ball comprising: a core consisting of a center and one or more intermediate layers covering the center; and a cover covering the core, wherein at least one piece or one layer of said intermediate layers is formed from a highly elastic intermediate layer composition that contains (A) a highly elastic polyamide resin having a flexural modulus in a range from 700 MPa to 5,000 MPa; (B) a metal-neutralized product of ethylene-(meth)acrylic acid copolymer and (C) a resin having a polar functional group in a specific way.06-27-2013
20120238378ANTI-SLICE GOLF BALL CONSTRUCTION - A golf ball has a cover and a core which is made as a single piece or of two or more parts (for example an inner core covered by an outer core or mantle layer). The ball has non-spherical aspects in at least some parts and may also have different specific gravities in different parts of the ball. The different shaped ball parts combined with the different specific gravities of the materials for different ball parts results in a differential between the moments of inertia of the different spin axes. The golf ball is spherical, but the inner layers are not necessarily completely spherical or symmetrical layers or parts.09-20-2012
20090124418High-Energy Radiation Positive Hardness Gradient in a Thermoplastic Golf Ball Core - A golf ball comprising a thermoplastic core having an outer diameter of 1.51 inches to 1.59 inches and having an outer surface and a geometric center, each having a hardness; an outer cover layer; and an inner cover layer disposed between the core and the outer cover layer; wherein the thermoplastic core has been exposed to sufficient high-energy radiation such that the hardness of the outer surface is greater than the hardness of the geometric center to define a positive hardness gradient of 5 Shore C or greater.05-14-2009
20090280928GOLF BALL WITH HEAT RESISTANT LAYER - A golf ball comprising of an outer core layer, or an inner cover layer having heat resistant properties to facilitate compression molding of a thermosetting polybutadiene-comprising layer over at least one thermoplastic layer. The ball comprises a thermoplastic inner core or core layer comprising of a low vicat highly neutralized ionomer material having a low melting point of less than 100° C., and a Shore C surface hardness of less than 80 and a compression of less than 70, wherein an outer adjacent thermoset layer is placed around the inner core or core layer, the thermoset layer comprising comprising a peroxide that decomposes at low temperatures forming free radical initiators with short half lives, therein reducing the molding temperature of the high vicat layer and subsequently reducing the temperature and/or time the softer thermoplastic layer is exposed to the high heat.11-12-2009
20130217516GOLF BALL - A golf ball of the present invention includes: a core located in the center of the golf ball; a cover which surrounds the outside of the core and has a plurality of dimples on the surface thereof; and a coating layer located between the core and the cover. The coating layer is formed of a material having rubber elasticity. The μ hardness of the golf ball is preferred to be approximately 3.0 or more and the cover is preferred to have a hardness of approximately 50 or more in terms of Shore D hardness. The intermediate layer is preferred to have a hardness of approximately 40 to approximately 65 in terms of Shore D hardness, and the hardness of the cover is preferred to be higher than the hardness of the intermediate layer.08-22-2013
20100267468GOLF BALL COVERS MADE FROM POLYUREAS BASED ON POLYCAPROLACTONES - A golf ball having a cover material made from a polyurea composition is provided. In one version, the golf ball includes a polybutadiene core and surrounding cover layer made of a polyurea composition. In another version, the golf ball includes a polybutadiene core, an intermediate casing layer made of ionomer resin, and an outer cover layer made of the polyurea composition. The polyurea composition is the reaction product of an isocyanate, amine-terminated polycaprolactone, and amine-terminated curing agent. The resulting cover material has many advantageous properties including improved durability, toughness, abrasion-resistance, and moisture-resistance.10-21-2010
20090209368GOLF BALL - The invention provides a golf ball composed of a core, a cover having a plurality of dimples on an outside surface thereof, and an intermediate layer disposed between the core and the cover. The intermediate layer is formed of a highly neutralized resin material, and has a Shore D hardness below 50 and a thickness of at least 1.7 mm but not more than 6.0 mm. The cover and the intermediate layer have a difference in Shore D hardness therebetween (cover Shore D hardness−intermediate layer Shore D hardness) of from 13 to 35. The cover and the intermediate layer have a combined thickness greater than 3 mm. The ball as a whole has a deflection, when compressed under a final load of 130 kgf from an initial load of 10 kgf, of at least about 2.0 mm but not more than about 4.0 mm. The golf ball, through a combination of dimples which do not cause a loss of lift in the low-velocity, low-spin rate region of the ball trajectory and a low-spin construction, travels farther and is therefore beneficial for competitive use by both skilled and amateur golfers.08-20-2009
20090203470MULTI-LAYER GOLF BALL - A golf ball comprises a molded core, one or more ionomer mantles, and a thermoset polyurethane cover. The core is a high cis-polybutadiene crosslinked with zinc diacrylate and may also comprise a halogenated thiophenol and metal thiosulfate. One or more of the ionomer mantles comprises an ionomer neutralized to 80% or greater.08-13-2009
20090280927GOLF BALL WITH HEAD RESISTANT SHIELD LAYER - The present invention is directed to a golf ball comprising a shield layer having heat resistant properties to facilitate compression molding of a thermosetting polybutadiene-comprising layer over at least one thermoplastic layer. The invention utilizes a thermoplastic inner core comprising of a low vicat highly neutralized ionomer material having a low melting point of less than 100° C., and a Shore C surface hardness of less than 80 and a compression of less than 70, wherein a shield layer is placed around the low vicat softening point temperature thermoplastic to shield it from the high heat necessary to mold a thermoset material about it.11-12-2009
20090042670Golf ball02-12-2009
20130190106GOLF BALL HAVING LAYERS WITH SPECIFIED MODULI - A golf ball or other layered article may include three thermoplastic layers and one thermoset layer. The flexural moduli of the thermoplastic materials may be selected to have specified ratios. The ratio of the first flexural modulus to the third flexural modulus may be between about 6 and about 30. The ratio of the second flexural modulus to the first flexural modulus may be between about 2 and about 8. The ratio of the second flexural modulus to the third flexural modulus may be between about 50 and about 180.07-25-2013
20080274832Golf Ball Compositions - Golf balls consisting of a core and a cover are disclosed. The core is a solid, single-layer core formed from a rubber composition comprising a resorcinol. The core has a positive hardness gradient such that the difference between the core's surface hardness and the core's center hardness is 25 Shore C units or greater and/or the core has a diameter of from 1.51 inches to 1.59 inches.11-06-2008
20080274835Golf Ball Compositions - Golf balls consisting of a core and a cover are disclosed. The core is a solid, single-layer core formed from a rubber composition comprising a catechol. The core has a positive hardness gradient such that the difference between the core's surface hardness and the core's center hardness is 25 Shore C units or greater and/or the core has a diameter of from 1.51 inches to 1.59 inches.11-06-2008
20080274834GOLF BALL COMPOSITIONS - Golf balls comprising a core and a cover are disclosed. The core is a dual- or multi-layer core, wherein at least one layer is formed from a rubber composition comprising a base rubber and a catechol. The core layer formed from such rubber composition has a positive hardness gradient such that the difference between the layer's outer surface hardness and inner surface hardness is 5 Shore C units or greater.11-06-2008
20080274830GOLF BALL COMPOSITIONS - Golf balls comprising a core and a cover are disclosed. The core is a dual- or multi-layer core, wherein at least one layer is formed from a rubber composition comprising a base rubber and a quinhydrone. The core layer formed from such rubber composition has a positive hardness gradient such that the difference between the layer's outer surface hardness and inner surface hardness is 5 Shore C units or greater.11-06-2008
20080274829GOLF BALL COMPOSITIONS - Golf balls comprising a core and a cover are disclosed. The core is a dual- or multi-layer core, wherein at least one layer is formed from a rubber composition comprising a base rubber and a resorcinol. The core layer formed from such rubber composition has a positive hardness gradient such that the difference between the layer's outer surface hardness and inner surface hardness is 5 Shore C units or greater.11-06-2008
20080274828GOLF BALL COMPOSITIONS - Golf balls comprising a core and a cover are disclosed. The core is a dual- or multi-layer core, wherein at least one layer is formed from a rubber composition comprising a base rubber and a benzoquinone. The core layer formed from such rubber composition has a positive hardness gradient such that the difference between the layer's outer surface hardness and inner surface hardness is 5 Shore C units or greater.11-06-2008
20090036235Golf ball - The invention provides a two-piece golf ball having a single-layer core, a single-layer cover and a surface on which a plurality of dimples are formed. The cover is made of a material which includes 100 parts by weight of a resin material, from 0 to 0.5 part by weight of titanium oxide, and from 0.1 to 2 parts by weight of a fluorescent pigment selected from the group consisting of yellow, orange, peach and red. The ball surface has a lightness L value, expressed in the Lab color system, of at least 50. The core surface has an L value of at least 82 and a chroma C, defined as (a02-05-2009
20080305891Golf ball12-11-2008
20080274831GOLF BALL COMPOSITIONS - Golf balls comprising a core and a cover are disclosed. The core is a dual- or multi-layer core, wherein at least one layer is formed from a rubber composition comprising a base rubber, a free radical initiator, and a hydroquinone. A ratio of the amount of the hydroquinone present in the rubber composition, measured in parts by weight, to the amount of free radical initiator present in the rubber composition, measured in parts by weight, is generally from 0.05 to 2. The core layer formed from such rubber composition has a positive hardness gradient such that the difference between the layer's outer surface hardness and inner surface hardness is 5 Shore C units or greater.11-06-2008
20080274833Golf Ball Compositions - Golf balls consisting of a core and a cover are disclosed. The core is a solid, single-layer core formed from a rubber composition comprising a base rubber and a benzoquinone. The core has a positive hardness gradient such that the difference between the core's surface hardness and the core's center hardness is 25 Shore C units or greater and/or the core has a diameter of from 1.51 inches to 1.59 inches.11-06-2008
20120196705MULTI-PIECE GOLF BALL COMPRISING LOW HARDNESS GRADIENT CORE - A golf ball includes a single core formed from a substantially homogenous rubber composition, an inner cover disposed about the core, and an outer cover. The inner cover includes an ionomeric material and has a hardness of about 60 Shore D or greater. The outer cover layer is disposed about the inner cover layer, is formed from a castable polyurea or polyurethane, and has a material hardness of about 60 Shore D or less. The outer surface of the core has a trans content of about 12% or less and a hardness of about 71 to 88 Shore C, the geometric center of the core has a trans content of about 10% or less and a hardness of about 70 to 80 Shore C, and the core surface hardness is greater than the geometric center hardness by about 1 to 10 Shore C to define a shallow positive hardness gradient.08-02-2012
20090005194Golf Balls having Two or More Core Layers Formed from HNP Compositions - The present invention is directed to golf balls consisting of a dual-layer core and a cover. The core consists of an inner core layer formed from a relatively hard HNP composition and an outer core layer formed from a relatively soft HNP composition. The outer core layer has an outer surface hardness less than the outer surface hardness of the inner core layer.01-01-2009
20090062034Golf Equipment Formed From Castable Formulation With Unconventionally Low Hardness and Increased Shear Resistance - Golf equipment including compositions including castable formulations that have low material hardness and increased shear resistance. The compositions may be used in any layer of a golf ball including cores, intermediate layers, and covers and result in high spin rates.03-05-2009
20090017940Multi-Layer Golf Ball - Golf balls consisting of a dual core and a single layer cover are disclosed. The dual core consists of an inner core layer formed from a rubber composition and an outer core layer formed from a highly neutralized polymer composition. The Shore C hardness of the outer core layer's outer surface is preferably greater than the material hardness of the inner cover layer, and more preferably is 56 Shore D or greater.01-15-2009
20090325730LOW DEFORMATION GOLF BALL - A golf ball comprising an innermost core, an outer core, and a cover is disclosed. At least a layer of the golf ball is made from a low compression, high coefficient of restitution material, and is being supported by a low deformation, high compression layer. The resulting golf ball has high coefficient of restitution at high and low impact speeds and low compression for controlled greenside play.12-31-2009
20080261723Golf Balls Having Two Core Layers Formed From HNP Compositions - The present invention is directed to golf balls consisting of a dual-layer core and a cover. The core consists of a center having a center hardness of 50 Shore C or greater and formed from a first HNP composition, and an outer core layer having a surface hardness of 75 Shore C or greater and formed from a second HNP composition. The first HNP composition has a material hardness of 55 Shore D or less and comprises a highly neutralized ethylene/(meth)acrylic acid/alkyl (meth)acrylate copolymer. The second HNP composition has a material hardness of 45 Shore D or greater and comprises a highly neutralized ethylene/(meth)acrylic acid copolymer. The material hardness of the first HNP composition is less than the material hardness of the second HNP composition. The cover consists of an inner cover layer formed from a thermoplastic composition and an outer cover layer formed from a polyurethane or polyurea composition.10-23-2008
20090221386GOLF BALL WITH INTERMEDIATE LAYER CONTAINING AN EXPANDABLE POLYMER - A multilayer golf ball with at least one layer made from an expandable polymeric composition is disclosed. In accordance to one aspect of the invention, the expandable polymeric composition comprises a film-forming binder polymer latex, a dispersing agent, a plurality of polyspheres encapsulating expandable volatile substance, and at least one additive. The additive can be a defoaming agent, a solvent, a thickener, a plasticizer, or any combination thereof. The at least one layer may also comprise a thermally expandable microsphere encapsulating foaming agent.09-03-2009
20100160086MULTILAYER CORE GOLF BALL HAVING HARDNESS GRADIENT WITHIN AND BETWEEN EACH CORE LAYER - The present invention is directed to an improved multi-layered core golf ball wherein each core layer comprises its own specific hardness gradient (positive, negative or a combination) in addition to an overall specific hardness gradient from one core layer to the next. In a first embodiment, the golf ball comprises a two layer core and a cover disposed about the two layer core. The two layer core comprises an inner core layer and an outer core layer disposed about the inner core layer. The inner core layer comprises a geometric center and a first outer surface. The inner core layer is formed from a substantially homogenous formulation, comprises a diameter of about 30 mm or lower, and has a plurality of hardnesses of from about 50 Shore C to about 90 Shore C. The geometric center comprises a first hardness and the first outer surface comprises a second hardness wherein the first hardness is greater than the second hardness to define a negative hardness gradient of about 15 Shore C or greater. The outer core layer comprises an inner surface and a second outer surface. The outer core layer is formed from a substantially homogenous formulation, comprises a thickness of about 10 mm or lower, and has a plurality of hardnesses of from about 40 Shore C to about 75 Shore C. The inner surface comprises a third hardness and the second outer surface comprises a fourth hardness, wherein the fourth hardness is similar to or less than the third hardness. The outer core layer further comprises a fifth hardness disposed between the inner surface and the second outer surface in a region extending between about 10% and about 90% of the distance from the inner surface to the second outer surface, wherein the fifth hardness is less than the third hardness and the fourth hardness. Finally, the fourth hardness is similar to or less than the first hardness. The present invention is also directed to a golf ball having certain Shore D hardnesses as disclosed herein.06-24-2010
20100151967CATIONIC POLYUREA COVER COMPOSITIONS FOR A MULTI-LAYER GOLF BALL - Golf balls that have at least one layer formed from a cationic polyurea material. In particular, the compositions of the invention, which include a polymer backbone including urea linkages with cationic groups, may be formed from an isocyanate-containing component and an isocyanate-reactive component, at least one of which includes precursor cationic groups, in the presence of an alkylating, quaternizing, or ternarizing agent.06-17-2010
20100160083MULTILAYER CORE GOLF BALL HAVING HARDNESS GRADIENT WITHIN AND BETWEEN EACH CORE LAYER - A multi-layered core golf ball wherein each core layer comprises its own specific hardness gradient in addition to an overall specific hardness gradient from one core layer to the next. The inner and outer core layers comprise a plurality of hardnesses of from about 50 Shore C to about 80 Shore C. The inner core layer comprises a diameter of about 30 mm or lower, the geometric center comprising a hardness different from that of the outer surface to define a positive or negative hardness gradient of about 20 Shore C or lower. The outer core layer comprises a thickness of about 10 mm or lower, the second outer surface hardness being less than that of the inner surface to define a negative hardness gradient of about 15 Shore C or lower. A further outer core layer hardness, disposed in a region extending between about 10% and about 90% of the distance from the inner surface to the second outer surface, is greater than that of the inner and second outer surfaces. Also, the second outer surface hardness is less than that of the geometric center to define a negative hardness gradient of about 15 Shore C or lower.06-24-2010
20100179001Golf ball - A golf ball is provided with a compression deformation of 2 mm and 4 mm and has a core made from a thermoplastic material, an intermediate layer made from a thermoset material, and at least one cover layer. The COR of the core falls between 0.78 and 0.89 and is higher than that of the whole golf ball. In this way, the golf ball has long flight distance and good hitting feel to fit both of the amateur golfers, whose swing speed is lower, and the low-handicap or professional golfers, whose swing speed is higher.07-15-2010
20100160085MULTILAYER CORE GOLF BALL HAVING HARDNESS GRADIENT WITHIN AND BETWEEN EACH CORE LAYER - A multi-layered core golf ball wherein each core layer comprises its own specific hardness gradient in addition to an overall specific hardness gradient from one core layer to the next. The inner core layer comprises a plurality of hardnesses of from about 50 Shore C to about 90 Shore C, a diameter of about 30 mm or lower, and a geometric center comprising a hardness greater than that of a first outer surface to define a negative hardness gradient of about 15 Shore C or greater. The outer core layer comprises a plurality of harnesses of from about 50 Shore C to about 95 Shore C, a thickness of about 10 mm or lower, and a second outer surface comprising a hardness greater than that of an inner surface to define a positive hardness gradient of about 20 Shore C or greater. A further outer core layer hardness, disposed in a region extending between about 10% and about 90% of the distance from the inner surface to the second outer surface, is greater than that of the inner and second outer surfaces. Also, the hardness of the second outer surface is similar to or less than that of the geometric center.06-24-2010
20100227710MULTI-LAYER GOLF BALL WITH TRANSLUCENT COVER - A golf ball comprising a core, a cover and at least on intermediate layer therebetween. The intermediate layer includes pigment which contributes to the color or appearance of the ball and the cover is at least partially transparent such that the intermediate layer is at least partially visible. The cover is also comprised of an optical enhancer.09-09-2010
20100227708GOLF BALL HAVING REDUCED SURFACE HARDNESS - The invention is directed to golf ball comprising a core and a cover disposed about the core, the cover comprising at least one cover layer comprising an cover outer surface and a cover inner surface, the cover outer surface comprising a fatty acid and/or fatty acid salt composition, the cover outer surface further comprising a hardness α and the cover inner surface comprising a hardness β, wherein the hardness α is different than the hardness β. In another embodiment, the at least one cover layer comprises a treated cover region and an untreated cover region, the treated cover region extending inward from the cover outer surface a depth of about 1% or greater of a distance between the cover outer surface and the cover inner surface, and the untreated cover region being disposed about the cover inner surface and adjacent the treated cover region. In yet another embodiment, the treated cover region extends inward from the cover outer surface a predetermined depth D09-09-2010
20100227707MULTILAYER CORE GOLF BALL HAVING HARDNESS GRADIENT WITHIN AND BETWEEN EACH CORE LAYER - The present invention is directed to an improved multi-layered core golf ball wherein each core layer comprises its own specific hardness gradient (positive, negative or a combination) in addition to an overall specific hardness gradient from one core layer to the next. In a first embodiment, the golf ball comprises a two layer core and a cover disposed about the two layer core. The two layer core comprises an inner core layer and an outer core layer disposed about the inner core layer. The inner core layer comprises a geometric center and a first outer surface. The inner core layer is formed from a substantially homogenous formulation, comprises a diameter of about 30 mm or lower, and has a plurality of hardnesses of from about 60 Shore C to about 85 Shore C. The geometric center comprises a first hardness and the first outer surface comprises a second hardness wherein the second hardness is greater than the first hardness to define a positive hardness gradient of from about 5 Shore C to about 20 Shore C. The outer core layer comprises an inner surface and a second outer surface. The outer core layer is formed from a substantially homogenous formulation, comprises a thickness of about 10 mm or lower, and has a plurality of hardnesses of from about 60 Shore C to about 95 Shore C. The inner surface comprises a third hardness and the second outer surface comprises a fourth hardness wherein the fourth hardness is greater than the third hardness to define a positive hardness gradient of about 20 Shore C or lower. The third hardness may be similar to the second hardness. The outer core layer further comprises a fifth hardness disposed between the inner surface and the second outer surface in a region extending between about 10% and about 90% of the distance from the inner surface to the second outer surface, wherein the fifth hardness is greater than the third hardness and the fourth hardness. Alternatively, the region may extend radially from about 13 mm to about 20 mm from the geometric center. Finally, the fourth hardness is greater than the first hardness to define a positive hardness gradient of about 30 Shore C or lower. In a second embodiment, the outer core layer differs from that of the first embodiment at least in that: the fourth hardness is less than the third hardness to define a negative hardness gradient of about 20 Shore C or lower; the fifth hardness is less than the third hardness and the fourth hardness; and the fourth hardness is greater than the first hardness to define a positive hardness gradient of about 18 Shore C or lower. The present invention is also directed to a golf ball having certain Shore D hardnesses as disclosed herein.09-09-2010
20100240469COMPOSITIONS FOR GOLF EQUIPMENT - The present invention is directed to golf balls having at least one layer formed from a polyurea composition. The polyurea is formed by combining a polyurea prepolymer, a polyamine curative, and a tin catalyst. Golf balls of the present invention include one-piece, two-piece, multi-layer, and wound golf balls. The composition may be present in any one or more of a core layer, a cover layer, or an intermediate layer.09-23-2010
20090075757Multi-Layer Golf Ball - Disclosed herein is a multi-layer golf ball having a soft outer cover. The golf ball has an inner cover layer with a Shore D hardness of 60 or more, and an outer cover with a Shore D hardness of 55 or less, and more preferably 50 or less. In a particularly preferred form of the invention, the outer cover comprises one or more polyurethane materials. The golf ball of the invention has exceptionally soft feel and high spin rates on short shots of 80 yards or less and, particularly, 40 yards or less, while maintaining good distance and average spin on full shots.03-19-2009
20080274827GOLF BALL - A golf ball component, such as a golf ball cover layer, formed from a high or increased melt index thermoplastic polyurethane, polyurea or polyurethane/polyurea is disclosed. The cover layer may be relatively thin (i.e., 0.075 or less, preferably 0.050 inches or less, more preferably less than 0.040 inches, even more preferably less than 0.030 inches). In addition, an operation in which the outer cover is exposed to an isocyanate solution is described to improve certain physical properties of the resulting golf ball.11-06-2008
20100304894POLYISOBUTYLENE-BASED COMPOSITIONS FOR GOLF BALLS - Polyisobutylene-based compositions suitable for making golf balls are provided. The amine-terminated polyisobutylene may be reacted with an isocyanate and amine-terminated curing agent to produce a polyurea composition that may be used as a cover material and/or intermediate casing layer. The resulting ball has improved weatherability. In one version, the golf ball includes a polyurea casing layer and polyurea cover. In a second version, the golf ball includes an ionomer casing layer and polyurea cover. In yet another version, the golf ball includes a polyurea casing layer and ionomer cover.12-02-2010
20090036234THREE-PIECE SOLID GOLF BALL - The present invention provides a three-piece solid golf ball having a core obtained by molding under heat a specific rubber composition and having a two-layer cover and an inner cover layer and an outer cover layer which encase the core and are made of a thermoplastic resin material. By optimizing the deflection of the core under a specific load, optimizing the combined thickness of the cover layers, forming the inner cover layer of a highly neutralized ionomer resin composition, and forming the outer cover layer of a special urethane material, a sufficient reduction in the spin rate of the ball on shots taken with a driver can be achieved, enabling the distance traveled by the ball to be increased. Moreover, the golf ball of the invention has a good feel on shots taken with a driver, and has an excellent spin rate on approach shots.02-05-2009
20100331115GOLF BALL AND METHOD FOR PRODUCING THE SAME - An object of the present invention is to improve the abrasion resistance and controllability in a golf ball having a polyurethane cover containing a layered silicate or the exfoliated layer thereof. The present invention provides a golf ball comprising a core and a cover covering the core, wherein the cover comprises a polyurethane resin having a secondary or tertiary amine structure in a molecular chain thereof, the secondary or tertiary amine structure being cationized, and a layered silicate and/or an exfoliated product thereof, having an average aspect ratio of unit layers thereof ranging from 10 to 50.12-30-2010
20110009213GOLF BALLS HAVING LAYERS MADE FROM THERMOPLASTIC COMPOSITIONS CONTAINING NUCLEATING AGENTS - Golf balls containing at least one layer made from a thermoplastic composition comprising a benzenetrisamide nucleating agent are provided. The thermoplastic composition may be an ionomer or non-ionomer resin. Golf balls of various constructions may be made including two-piece, three-piece, and four-piece balls. The composition is used preferably to form a golf ball core having improved resiliency, durability, toughness, and impact strength.01-13-2011
20110244987GOLF BALL COMPRISING RENEWABLE RESOURCE COMPONENT - The invention is directed to a golf ball comprising a core and a cover, wherein at least one of the core and the cover comprises about 10 wt % or greater of a renewable polymer composition comprising an ultra high molecular weight polyhydroxyalkanoate compound having the formula:10-06-2011
20110130219MULTI-PIECE SOLID GOLF BALL - A multiple-piece solid core golf ball includes a solid core including an inner core layer and an outer core layer, and a cover disposed on the outside of the solid core. The inner core layer has an outer diameter of at most approximately 25 mm and is formed of a material having a loss tangent (tan δ) of at least approximately 0.1. The outer core layer is formed of a material having a loss tangent (tan δ) of from approximately 0.01 to approximately 0.1. The difference between the loss tangent (tan δ) of the material forming the inner core layer and the loss tangent (tan δ) of the material forming the outer core layer is at least approximately 0.05.06-02-2011
20100179002GOLF BALL COMPOSITION - A two piece ball golf ball having a core, and an outer cover layer or a ball having a core, an outer cover layer; and one or more intermediate layers, where at least one of the outer cover layer, or intermediate layer is made from a blend composition of about 1 to about 99 wt % of a block copolymer having no polar functionality; and from about 1 to about 99 wt % of an ionomer. Also included in the blend is from about 0.5 to about 10 pph ((based on the combined weight of the block copolymer and ionomer) of a compound having the general formula:07-15-2010
20090312121GOLF BALL12-17-2009
20100056300MUTLI-LAYER GOLF BALL HAVING INNER COVERS WITH NON-PLANAR PARTING LINES - The invention comprises a golf ball. The golf ball is formed with a core, at least one intermediate layer, and a cover. The intermediate layer has a non-planar parting line. The molds used to form the intermediate layer have non-planar mating surfaces. The non-planar mating surfaces of the molds mesh, and when the intermediate layer is formed therein, the intermediate layer has a non-planar parting line thereon. If compression molding is used, hemispherical layer blanks may be pre-formed in the shape of the mold halves. To form the intermediate layer, the two blanks are compression molded together. If injection molding is used, a core is placed inside a mold chamber and layer material is injected into the mold chamber to form the intermediate layer about the core. If reaction injection molding is used, two or more reactive precursors are mixed and injected into the mold cavity, and they react to form the intermediate layer. Optional outer layers and a cover are molded on the intermediate layer to form a finished ball.03-04-2010
20110250987MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball having a solid core, an inner cover layer and an outer cover layer, which outer cover layer has a plurality of dimples on a surface thereof. The value obtained by subtracting a material hardness (Shore D) of the outer cover layer from a material hardness (Shore D) of the inner cover layer is greater than −5 and less than +5. The dimples number at least 250 and not more than 500, have a surface coverage (SR) of at least 70% and a volume ratio (VR) of at least 1.0%, are of at least three types of mutually differing dimple diameter (DM) and/or dimple depth (DP), and have an average depth of at least about 0.18 mm and a diameter-to-depth ratio (DM/DP) of not more than about 23. The ball has a coefficient of lift CL at a Reynolds number of 70,000 and a spin rate of 2,000 rpm which is maintained at 60% or more of the coefficient of lift CL at a Reynolds number of 80,000 and a spin rate of 2,000. This multi-piece solid golf ball is able to substantially reduce the distance traveled by the ball when struck at a high HS, while at the same time holding down the reduction in distance when struck at a low HS.10-13-2011
20110250990GOLF BALLS HAVING A LOW MODULUS HNP LAYER AND A HIGH MODULUS HNP LAYER - The present invention is directed to golf balls consisting of a dual-layer core and a cover. The core consists of an inner core layer formed from a high modulus HNP composition and an outer core layer formed from a low modulus HNP composition. The outer core layer has an outer surface hardness less than the outer surface hardness of the inner core layer.10-13-2011
20110098133GOLF BALL RESIN COMPOSITION AND GOLF BALL USING THE SAME - An object of the present invention is to provide a novel golf ball material that controls the spin rate on the approach shots while suppressing the change in the spin rate on the driver shots. Another object of the present invention is to provide a golf ball which produces a high spin rate on the approach shots and a low spin rate on the driver shots. The present invention provides a golf ball resin composition comprising: a polyurethane having a polyol component having a number average molecular weight from 200 to 1,500 as a constituting component.04-28-2011
20110077104MULTI-PIECE GOLF BALL COMPRISING LOW HARDNESS GRADIENT CORE - A golf ball includes a single core formed from a substantially homogenous rubber composition, an inner cover disposed about the core, and an outer cover. The inner cover includes an ionomeric material and has a hardness of about 60 Shore D or greater. The outer cover layer is disposed about the inner cover layer, is formed from a castable polyurea or polyurethane, and has a material hardness of about 60 Shore D or less. The outer surface of the core has a trans content of about 12% or less and a hardness of about 71 to 88 Shore C, the geometric center of the core has a trans content of about 10% or less and a hardness of about 70 to 80 Shore C, and the core surface hardness is greater than the geometric center hardness by about 1 to 10 Shore C to define a shallow positive hardness gradient.03-31-2011
20110250988MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball having a solid core, an inner cover layer and an outer cover layer, which outer cover layer has a plurality of dimples on a surface thereof. The inner cover layer has a thickness of from 0.8 to 3.0 mm and a material hardness (Shore D) of from 10 to 60, the outer cover layer has a thickness of from 0.7 to 3.0 mm and a material hardness (Shore D) of from 45 to 62, and the material hardness (Shore D) of the outer cover layer is higher than the material hardness (Shore D) of the inner cover layer. The dimples number at least 250 and not more than 500, have a surface coverage (SR) of at least 70% and a volume ratio (VR) of at least 1.0%, are of at least three types of mutually differing dimple diameter (DM) and/or dimple depth (DP), and have an average depth of at least about 0.18 mm and a diameter-to-depth ratio (DM/DP) of not more than about 23. The ball has a coefficient of lift CL at a Reynolds number of 70,000 and a spin rate of 2,000 rpm which is maintained at 60% or more of the coefficient of lift CL at a Reynolds number of 80,000 and a spin rate of 2,000. This multi-piece solid golf ball is able to substantially reduce the distance traveled by the ball when struck at a high HS, while at the same time holding down the reduction in distance when struck at a low HS.10-13-2011
20090137342Golf Ball Layers Formed of Polyurethane-Based and Polyurea-Based Compositions Incorporating Block Copolymers - A golf ball including a core and a cover, wherein cover is formed from a composition comprising the reaction product of a prepolymer including a soft-segment comprising an amine-terminated polyether and a hard segment including a uretdione of hexamethylene diisocyanate; and an amine-terminated curing agent; wherein the amine-terminated polyether has the structure:05-28-2009
20090137343GOLF BALL WITH TRANSLUCENT COVER - The present invention is directed a golf ball having at least a transparent or translucent cover and a core. The golf ball may also comprise an intermediate layer disposed between the core and the cover. The transparent or translucent cover may comprise a plurality of dimples on its surface as well as depressions other than dimples, such as stripes, text, or logos. Both the cover and the core may comprise an amount of dye or dyes. The cover may additionally comprise an amount of reflective particulates. The core may include a plurality of projections and/or depressions on its surface to provide more surface area for the adhesion of the cover to the core.05-28-2009
20090029802POLYUREA AND POLYURETHANE COMPOSITIONS FOR GOLF EQUIPMENT - A golf ball having at least a core and a layer disposed about the core is disclosed. The layer is formed from a composition having multiple reactive and/or non-reactive ingredients. At least one of these ingredients is a polyether polyahl formed from three or more diols and/or cyclic ethers, such as oxolane, oxirane, and a chiral cyclic ether.01-29-2009
20120122612GOLF BALLS COMPRISING HIGHLY- AND PARTIALLY-NEUTRALIZED ALTERNATE COPOLYMERS - A golf ball includes a core having a diameter, a first Shore D hardness and a compression; and a cover having a second Shore D hardness that is at least 5 points less than the first Shore D hardness. The cover includes an ionomer of an alternate copolymer, the alternate copolymer being formed from the reaction product of a copolymer of ethylene and maleic anhydride monomer in the presence of a suitable base, the maleic anhydride monomer being present in an amount of about 78 wt %.05-17-2012
20100227709GOLF BALL HAVING REDUCED SURFACE HARDNESS - The invention is directed to a method of making a golf ball comprising the steps of: providing a core comprising at least one layer; forming a cover about the core comprising at least one cover layer comprising a cover inner surface and a cover outer surface and having a thickness D; treating the cover outer surface with a fatty acid and/or fatty acid salt composition and forming a treated cover region which extends inward from the cover outer surface a penetration depth D09-09-2010
20110256961THERMOSET POLYURETHANES BASED ON MOISTURE-RESISTANCE POLYOLS FOR USE IN GOLF BALLS - Golf balls containing at least one layer made from a thermoset polyurethane or polyurethane-urea that is the reaction product of a polyisocyanate with moisture-resistant polyol and a curing agent are provided. The moisture-resistant polyol may be prepared by dimerizing unsaturated aliphatic monocarboxylic acid or ester containing 10 to 60 carbon atoms followed by reacting it with a monomeric, oligomeric, or polymeric diol. In one preferred version, the moisture-resistant polyol is a branched polyester polyol containing 36 carbon atoms. The composition can be prepared using prepolymer or one-shot manufacturing techniques. The thermoset composition has good cross-link density. The resulting golf ball has desirable playing performance properties including high resiliency, toughness, impact durability, moisture-resistance, and soft feel.10-20-2011
20120309561GOLF BALLS HAVING AT LEAST TWO CORE LAYERS FORMED FROM HNP COMPOSITIONS - The present invention is directed to golf balls consisting of a multi-layer core and a cover. The multi-layer core consists of a small, hard center enclosed by a soft intermediate core layer and an outer core layer. The multi-layer core includes at least one layer formed from a relatively soft HNP composition and at least one layer formed from a relatively hard HNP composition.12-06-2012
20100190581GOLF BALL - The invention provides a golf ball with a surface having a plurality of dimples formed thereon. The number of dimples is at least 250 and not more than 400, the dimples have a surface coverage (SR) of at least 70% and a volume ratio (VR) of at least 1.1%, are of at least three types and have an average depth of at least about 0.18 mm and a diameter (DM) to depth (DP) ratio (DM/DP) of not more than about 22. The (total number of Db)/(total number of Da) ratio, where Da represents dimples having a diameter of at least 3.7 mm and Db represents dimples having a diameter of less than 3.7 mm, is at least about 0.005 and not more than about 1. The ball has a coefficient of lift CL at a Reynolds number of 70,000 and a spin rate of 2,000 rpm which is maintained at 60% or more of the coefficient of lift CL at a Reynolds number of 80,000 and a spin rate of 2,000 rpm. The golf ball of the invention lowers fluctuations in lift and drag at high and low spin rates, enabling a stable trajectory to be achieved.07-29-2010
20100190582GOLF BALL WITH COVER HAVING A PEARLESCENT EFFECT - A golf ball having a cover having a pearlescent effect is disclosed. The cover comprises a first thermoplastic and a second thermoplastic having an index of refraction that differs from an index of refraction of the first thermoplastic by at least about 0.5 percent. The cover further comprises a compatibilizer.07-29-2010
20100279797Multi-Layered Golf Balls Containing Polyethylene Powder - A multi-layered golf ball having an inner core, at least one intermediate layer, and outer cover is provided. The intermediate layer is made from a polyurea composition containing ultra-high molecular weight polyethylene powder particulate dispersed therein. The intermediate layer provides the ball with advantageous properties including improved durability, toughness, hardness, and impact-resistance.11-04-2010
20110306442Ionomer Compositions with Good Scuff Resistance - Provided is a composition comprising a mixture of a high molecular weight (Mw between 80,000 and 500,000 Da) carboxylate functionalized ethylene terpolymer, a high molecular weight (Mw between 80,000 and 500,000 Da) carboxylate functionalized ethylene dipolymer and a low molecular weight (Mw between 2,000 and 30,000 Da) carboxylate functionalized ethylene copolymer wherein the carboxylic acid groups are at least partially neutralized to form salts containing zinc cations. The composition provides a good balance of hardness, flexural modulus and scuff resistance. The composition is used in films, multilayer structures and other articles of manufacture, such as golf balls.12-15-2011
20090137344GOLF BALL COMPOSITIONS WITH IMPROVED TEMPERATURE PERFORMANCE, HEAT RESISTANCE, AND RESILIENCY - Golf ball compositions, and components formed therefrom, including trifunctional materials, such as trifunctional isocyanates, polyols, and amines, that have improved performance and durability characteristics, e.g., improved heat resistance, improved resiliency, and dimensional stability.05-28-2009
20090203469GOLF BALLS CONTAINING HIGHLY-NEUTRALIZED ACID POLYMERS AND IONIC PLASTICIZERS - A golf ball comprising a core and a cover layer, wherein at least one of the core and the cover layer includes a polymer composition of a highly-neutralized acid polymer and an ionic plasticizer is disclosed and described. The highly-neutralized acid polymer can comprise at least 50 wt % of the polymer composition and have 70% to 100% of the acid groups neutralized. In addition, the ionic plasticizer can be alcohol esters, montanic acids, montanic acid esters, alkylene bis-amines, zwitterionic compounds, salts thereof, or combinations thereof.08-13-2009
20110319193GOLF BALL - A golf ball 12-29-2011
20100125002RESIN COMPOSITIONS INCORPORATING MODIFIED POLYISOCYANATE AND METHOD FOR THEIR MANUFACTURE AND USE - Resin compositions incorporate (a) a functionalized polymeric material comprising at least one hydroxyl functional group, at least one amine functional group or at least one hydroxyl functional group and at least one amine functional group, and (b) at least one modified polyisocyanate to form a urethane, a urea, or a urethane/urea. The modified polyisocyanate typically has at least three isocyanate functional groups, which may include one or more blocked isocyanates by linkage. The resin compositions exhibit the ease of processing of a thermoplastic resin, but show the superior mechanical properties and excellent shear durability like a thermoset polyurethane.05-20-2010
20110319194GOLF BALL CORE WITH SOFT OUTER TRANSITION VOLUME AND NEGATIVE HARDNESS GRADIENT - A golf ball including a unitary core having a volume, an outer surface, a geometric center, and an outermost transition volume adjacent to the outer surface, the core being formed from a substantially homogenous composition; and a cover layer including ionomer, metallocene-catalyzed polymer, polyester, polyamide, non-ionomeric thermoplastic elastomer, copolyether-ester, copolyether-amide, polycarbonate, polybutadiene, polyisoprene, or polystyrene block copolymer. The outermost transition volume is disposed between the core outer surface and the geometric center, the transition volume has an outer portion congruent with the core outer surface, and comprises the outermost 45% of the core volume or less. Both a hardness of the core outer surface and a hardness within the outermost transition volume are less than the hardness of the geometric center to define a negative hardness gradient.12-29-2011
20120046126Golf Ball With Carbon Dioxide Absorbents - This disclosure provides a golf ball that includes carbon dioxide absorbents in order that the golf ball may reduce atmospheric carbon dioxide levels to aid in alleviating global warming. The golf ball may include an intermediate layer that is substantially impermeable to water, in order to ensure that the golf ball's core is not degraded by water produced by the carbon dioxide absorbance reaction. The chemical absorbents may be encapsulated in microcapsules so that carbon dioxide is not absorbed until the golf ball is used by a golfer.02-23-2012
20120004051GOLF BALL CORE WITH SOFT OUTER TRANSITION VOLUME AND NEGATIVE HARDNESS GRADIENT - A golf ball including a unitary core having a volume, an outer surface, a geometric center, and an outermost transition volume adjacent to the outer surface, the core being formed from a substantially homogenous composition; and a cover layer including ionomer, metallocene-catalyzed polymer, polyester, polyamide, non-ionomeric thermoplastic elastomer, copolyether-ester, copolyether-amide, polycarbonate, polybutadiene, polyisoprene, or polystyrene block copolymer. The outermost transition volume is disposed between the core outer surface and the geometric center, the transition volume has an outer portion congruent with the core outer surface, and comprises the outermost 45% of the core volume or less. Both a hardness of the core outer surface and a hardness within the outermost transition volume are less than the hardness of the geometric center to define a negative hardness gradient.01-05-2012
20120004050Golf Ball Incorporating Thermoplastic Polyurethane - A rebound resilient golf ball having an core layer or layers with one or more cores, a scuff resistant cover of thermoplastic polyurethane surrounding the core layer or layers, and optionally a mantle layer positioned between the cover and the core layer or layers. The cover is made from a dendritic thermoplastic polyurethane that includes an isocyanate monomer and a hyper branched polyol, optional additional polyols, and one or more chain extenders. An optional mantle layer may also be made of thermoplastic polyurethane, particularly a dendritic thermoplastic polyurethane.01-05-2012
20120015758POLYUREA AND POLYURETHANE COMPOSITIONS FOR GOLF EQUIPMENT - Golf equipment having improved cut and shear resistance that includes a polyurea composition, preferably saturated and/or water resistant, formed of a polyurea prepolymer and a curing agent, wherein the polyurea prepolymer includes an isocyanate and an amine-terminated compound, and wherein the curing agent includes a hydroxy-terminated curing agent, amine-terminated curing agent, or a mixture thereof.01-19-2012
20110165966MULTI-LAYER CORE GOLF BALL - The present invention is directed to an improved golf ball displaying the desired spin profile and having a generally rigid, thermoset polybutadiene outer core surrounding a relatively soft, low compression inner core. In general, this golf ball has an inner core and at least one outer core layer surrounding the inner core. The inner core has a hardness less than a hardness of the outer core and a specific gravity less than or equal to the outer core specific gravity. Overall the inner core compression and outer core are formulated to provide a combined overall core compression of greater than about 50, preferably greater than about 70. A cover layer is provided to surround and to cover the outer core layer.07-07-2011
20120115642GOLF BALL COMPOSITIONS - Disclosed herein are soft and stiff compositions, i.e., compositions which have a flexural modulus that is greater than the value that is expected based on the composition's hardness. The compositions preferably have a hardness/modulus relationship represented by the formula05-10-2012
20120021853GOLF BALL - An object of the present invention is to provide a golf ball having a high resilience with a high spin rate on the approach shots. The present invention provides a golf ball comprising a constituting member that is formed from a polyurethane composition containing a polyurethane elastomer as a resin component, the polyurethane composition satisfying properties of a rebound resilience of 54% or more and a shear loss modulus G″ of 5.03×1001-26-2012
20120021852GOLF BALL - A golf ball 01-26-2012
20120157234MULTI-PIECE SOLID GOLF BALL - A multi-piece solid golf ball has a core, at least one intermediate layer encasing the core, and a cover of at least one layer encasing the intermediate layer. The core is formed of a base rubber, and the intermediate layer and cover are each formed of a resin material. The intermediate layer has a thickness (a) and the cover has a thickness (b) such that the ratio a/b is from 0.7 to 1.9, and the core has a diameter (c) such that the ratio c/a with the intermediate layer thickness (a) is from 23 to 38. The intermediate layer has a material hardness (Shore D) of from 54 to 76, and the cover has a material hardness (Shore D) of from 47 to 69. The ball satisfies the following relationship: cover material hardnesscore surface hardness. This golf ball has an improved flight performance and a good, solid feel on impact.06-21-2012
20120157235MULTI-PIECE SOLID GOLF BALL - A multi-piece solid golf ball has a core, at least one intermediate layer encasing the core, and a cover of at least one layer encasing the intermediate layer. The core is formed of a base rubber, and the intermediate layer and cover are each formed of a resin material. The intermediate layer has a thickness (a) and the cover has a thickness (b) such that the ratio a/b is from 0.7 to 1.9, and the core has a diameter (c) such that the ratio c/a with the intermediate layer thickness (a) is from 23 to 38. The intermediate layer has a material hardness (Shore D) of from 42 to 76, and the cover has a material hardness (Shore D) of from 41 to 69. The ball satisfies the following relationship: cover material hardnesscore surface hardness, and wherein a Shore D hardness at the core surface minus a Shore D hardness at the core center is not more than 17 units. This golf ball has an improved flight performance and a good, solid feel on impact.06-21-2012
20110105246GOLF BALL AND METHOD FOR PRODUCING THE SAME - An object of the present invention is to provide a novel golf ball that controls the spin rate on the approach shots while suppressing the change in the spin rate on the driver shots and a method for producing the same. The present invention provides a golf ball having a cover containing a resin component and a filler, wherein the filler is oriented roughly parallel to a surface of the cover. The cover having anisotropy behaves like a hard material against the deformation in the compression direction on the driver shots and behaves like a soft material against the deformation in the shear direction on the approach shots. The present invention also provides a method for producing a golf ball, comprising compression molding a cover composition containing a resin component and a filler to mold a shell, and compression molding a core covered with a plurality of shells to mold a cover.05-05-2011
20100093466GOLF BALL - An objective of the present invention is to provide a golf ball striking a balance between the flight distance on the driver shots and the approach performance on the approach shots and having the excellent shot feeling and durability. The present invention provides a golf ball comprising a core consisting of a center and a surrounding layer covering the center; at least one intermediate layer covering the core; and a cover covering the intermediate layer; wherein at least one piece or one layer of the intermediate layer is formed from a highly elastic intermediate layer composition that contains (A) a highly elastic resin having a flexural modulus in a range from 700 MPa to 5,000 MPa and (B) an ionomer resin having a flexural modulus in a range from 150 MPa to 1,000 MPa in a content ratio ((A)/(B)) of (A) the highly elastic resin to (B) the ionomer resin (B) being (20 mass % to 80 mass %)/(80 mass % to 20 mass %) (the total is 100 mass %), and wherein a surface hardness (Hm) of the intermediate layer and a surface hardness (Hs) of the core satisfy the equation: Hm≧Hs, and the cover has a slab hardness (Hc) of 45 or less in Shore D hardness.04-15-2010
20100093467MULTILAYER CORE GOLF BALL HAVING HARDNESS GRADIENT WITHIN AND BETWEEN EACH CORE LAYER - The present invention is directed to an improved multi-layered core golf ball wherein each core layer comprises its own specific hardness gradient (positive, negative or a combination) in addition to an overall specific hardness gradient from one core layer to the next. In a first embodiment, the golf ball comprises a two layer core and a cover disposed about the two layer core. The two layer core comprises an inner core layer and an outer core layer disposed about the inner core layer. The inner core layer comprises a geometric center and a first outer surface. The inner core layer is formed from a substantially homogenous formulation, comprises a diameter of about 30 mm or lower, and has a plurality of hardnesses of from about 50 Shore C to about 80 Shore C. The geometric center comprises a first hardness and the first outer surface comprises a second hardness, wherein the first hardness is greater than the second hardness to define a negative hardness gradient about 20 Shore C or less. The outer core layer comprises an inner surface and a second outer surface. The outer core layer is formed from a substantially homogenous formulation, comprises a thickness of about 10 mm or lower, and has a plurality of hardnesses of from about 50 Shore C to about 90 Shore C. The inner surface comprises a third hardness and the second outer surface comprises a fourth hardness, wherein the fourth hardness is greater than the third hardness. The outer core layer further comprises a fifth hardness disposed between the inner surface and the second outer surface in a region extending between about 10% and about 90% of the distance from the inner surface to the second outer surface, wherein the fifth hardness is greater than the first hardness, the third hardness and the fourth hardness. Finally, the fourth hardness is greater than the first hardness to define a two layer core having a positive hardness gradient of less than about 20 Shore C. In a second embodiment, the dual layer core differs from that of the first embodiment at least in that: The outer core has a plurality of hardnesses of from about 50 Shore C to about 80 Shore C, the fifth hardness is greater than the third hardness and the fourth hardness and similar to the first hardness; and the fourth hardness is less than the first hardness to define a two layer core having a negative hardness gradient of less than about 10 Shore C or the fourth hardness is less than the first hardness to define a two layer core having a negative hardness gradient of less than about 7 Shore C. The present invention is also directed to a golf ball having certain Shore D hardnesses as disclosed herein.04-15-2010
20090131202MULTI-LAYER GOLF BALL - Multi-layer golf balls having a thin, relatively hard outer core layer surrounding a large, relatively soft inner core layer are provided. The inner core layer generally has a diameter of from 1.5 inches to 1.55 inches. The outer core layer generally has an outer diameter of from 1.6 inches to 1.64 inches. A cover is provided to surround the outer core layer. A moisture barrier layer is optionally provided between the outer core layer and the cover.05-21-2009
20090170636GOLF BALL - The object of the present invention is to provide a golf ball which has excellent durability and wear-resistance and provides an excellent shot feeling The present invention provides a golf ball comprising: a core consisting of a center and at least one intermediate layer covering the center; and a cover covering the core, wherein the cover is formed from a cover composition containing a thermoplastic polyurethane (A), a polyisocyanate compound (B) having at least two isocyanate groups, and a polyhydroxyether (C) as a resin component, wherein the cover composition has a slab hardness from 20 to 55 in shore D hardness, and the cover has a thickness from 0.1 mm to 1.5 mm.07-02-2009
20120214614GOLF BALL - An object of the present invention is to provide a golf ball having excellent scuff resistance and spin performance, and a satisfactory rebound property. The golf ball has a core 08-23-2012
20100048327Highly-Neutralized Golf Ball Compositions - The present invention is directed to a golf ball and to a process for forming a golf ball having at least one layer, where the layer is formed of a highly neutralized polymer composition having greater than about 70 percent of the acid groups neutralized by a neutralizing agent including ammonium salts, monoamine salts, inner salts, chelates and their ligands, surfactants, phospholipids, ionic liquids, long-chain organic carbonates, main-chain heteroatom-substituted fatty acids, or a combination thereof.02-25-2010
20100009777GOLF BALL - A golf ball having an indicia composed of a novel metallic ink is disclosed herein. The first indicia is preferably composed of a vacuum metallized pigmented ink having a particle size ranging from 10 microns to 12 microns. The ink is preferably an aluminum based ink. The golf ball is preferably a two-piece solid golf ball or a three-piece solid golf ball. The novel ink preferably has a viscosity above about 300 centipoise.01-14-2010
20100292031GOLF BALL WITH INTERMEDIATE LAYER CONTAINING AN EXPANDABLE POLYMER - A multilayer golf ball with at least one layer made from an expandable polymeric composition is disclosed comprising a thermally expandable microsphere encapsulating foaming agent wherein the expandable polymeric composition expands from 5% to 200% of its pre-expand thickness when the expandable polymeric composition is exposed to a triggering environmental factor.11-18-2010
20090017939Multi-Layer Golf Ball - Golf balls consisting of a dual core and a dual cover are disclosed. The dual core consists of an inner core layer formed from a rubber composition and an outer core layer formed from a highly neutralized polymer composition. The Shore C hardness of the outer core layer's outer surface is greater than the material hardness of the inner cover layer, and is preferably 75 Shore C or greater.01-15-2009
20120231898GOLF BALL COMPRISING FLUORINATED SILANE-TREATED FILLER TO PROMOTE MOISTURE RESISTANCE - The invention is directed to a golf ball comprising a core, a cover and optionally an intermediate layer disposed between the core and the cover, wherein at least one of the core, the intermediate layer and the cover comprises a moisture vapor barrier layer formed from a moisture vapor barrier composition comprising at least one diene rubber and at least one fluorinated silane treated filler. The filler is hydrophobically modified by fluorinated silane, a hydrophobizing material capable of rendering the surfaces of the silica particles suitably hydrophobic. This moisture vapor barrier composition, which may be incorporated in the golf ball prior to molding, protects the encased inner golf ball components from moisture penetration which damages the golf ball and deteriorates desired golf ball characteristics. Such a golf ball preserves and even enhances optimum golf ball properties and desired golf ball characteristics such as high spin, resilience and durability which may be negatively influenced or impacted by unintended changes in golf ball component compression, COR and hardness due to moisture invasion. The golf ball may comprise an untreated region and a treated outer surface, the treated outer surface having a moisture vapor transmission rate X and the untreated region having a moisture vapor transmission rate Y, the treated outer surface being treated with and comprising a moisture vapor barrier composition formed from at least one diene rubber and at least one fluorinated silane treated filler such that X09-13-2012
20100331113GOLF BALL - An object of the present invention is to provide a golf ball that has excellent abrasion resistance and spin performance without sacrificing the processability of the cover, in a golf ball having a cover for which a crosslinkable thermoplastic polyurethane is used as a resin component. The present invention provides a golf ball comprising: a core; and a cover covering the core, wherein the cover is formed from a cover composition containing a thermoplastic polyurethane that has, as a constituting component, a chain extender having an unsaturated carbon-carbon bond.12-30-2010
20120264542GOLF BALL10-18-2012
20120270677VARIABLE DENSITY CORE GOLF BALLS - A golf ball is provided having a modified density gradient among the inner layers to produce a desired high or low moment of inertia and controlled spin rate is disclosed. The golf ball has three or more inner layers in addition to a cover, and the density of the inner layers is selected such that the layers inside the cover have a density progression from the core to the cover or from the cover to the core.10-25-2012
20100203984THICK INNER COVER MULTI-LAYER GOLF BALL - A golf ball includes a core having a center and an outer core layer formed from a polyoctenamer. The core has a compression of 70 or less, an outer diameter of 1.38 to 1.387 inches, and a COR of 0.770 to 0.810. An intermediate layer is formed over the core, the intermediate layer having a thickness of 0.015 to 0.07 inches, a hardness of 55 to 70 Shore D, and including a highly-neutralized ionomer. A cover including an inner cover layer and an outer cover layer is formed over the intermediate layer. The outer cover layer has a thickness of 0.02 to 0.04 inches and includes a castable polyurethane having a hardness of 40 to 60 Shore D. A combination of the core and the intermediate layer has a compression of 60 or greater and the golf ball has a COR of 0.805 or greater.08-12-2010
20120094784GOLF BALL WITH SINGLE THERMOPLASTIC COVER LAYER OF HETEROGENEOUS COMPOSITION - The invention relates generally to golf balls, and more specifically, to a golf ball having a single cover layer that is comprised of a blend of two or more distinct resinous materials.04-19-2012
20110237350GOLF BALL HAVING REDUCED SURFACE HARDNESS - A golf ball comprising a core and at least one cover layer disposed about the core; the core comprising a geometric center and an outer surface, the core further comprising an untreated region extending radially from the geometric center a distance D09-29-2011
20110237349GOLF BALL HAVING REDUCED SURFACE HARDNESS - A golf ball comprising a core and at least one cover layer disposed about the core, the core comprising a geometric center and an outer surface, the core further comprising an untreated region extending radially from the geometric center a predetermined distance D09-29-2011
20120100934BLENDS OF LINEAR AND BRANCHED NEODYMIUM-CATALYZED RUBBER FORMULATIONS FOR USE IN GOLF BALLS - The invention relates to golf ball formulations formed from blends of linear and branched polybutadienes catalyzed with neodymium that have improved properties and processing characteristics. Golf ball components may be formed from the blends to provide high coefficient of restitution.04-26-2012
20100130308GOLF BALLS INCORPORATING RIGID, ROSIN-MODIFIED POLYMERS - Golf ball compositions including a rosin-modified polymeric composition including a conventional ionomer, acid copolymer, highly neutralized polymer, or other suitable polymer that has been modified with a rosin material to impart stiffness through increasing the flexural modulus of the material.05-27-2010
20110159998GOLF BALL - A golf ball 06-30-2011
20080227567COMPOSITIONS FOR USE IN GOLF BALLS - A golf ball comprises a core, an outer cover layer, and, optionally, an intermediate layer disposed between the core and the outer cover layer. The outer cover layer may comprise a polyurethane or polyurea composition. At least one portion of the golf ball comprises a composition that enhances physical properties and/or performance characteristics (e.g., coefficient of restitution) of the golf ball. Preferably, the coefficient of restitution of the core is 0.8 or greater.09-18-2008
20130184102Golf Ball Including A Blend Of Highly Neutralized Acid Polymers And Method Of Manufacture - A golf ball having a core layer, a mantle layer enclosing the core layer, and a cover layer enclosing the mantle layer. At least one of the layers includes a blend of at least two highly neutralized acid polymers having low flexural moduli. The relative proportion of one highly neutralized acid polymer to the other highly neutralized acid polymer is between about 10:90 and about 90:10.07-18-2013
20130123045MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball having a solid core, at least one intermediate layer and a cover. The core has a hardness which gradually increases from a core center to a core surface, with the golf ball having specific values for the hardness difference between the core center and the core surface; the hardness difference (I)−(II) in JIS-C hardness units being not more than ±2; the (hardness of intermediate layer material)−(hardness of core surface); the (initial velocity of sphere composed of core encased by intermediate layer)−(initial velocity of core); the (deflection of sphere composed of core encased by intermediate layer)/(deflection of core); and the (hardness of cover material)−(hardness of intermediate layer material).05-16-2013
20130130836MULTI-PIECE GOLF BALL COMPRISING LOW HARDNESS GRADIENT CORE - A golf ball includes a single core formed from a substantially homogenous rubber composition, an inner cover disposed about the core, and an outer cover. The inner cover includes an ionomeric material and has a hardness of about 60 Shore D or greater. The outer cover layer is disposed about the inner cover layer, is formed from a castable polyurea or polyurethane, and has a material hardness of about 60 Shore D or less. The outer surface of the core has a trans content of about 12% or less and a hardness of about 71 to 88 Shore C, the geometric center of the core has a trans content of about 10% or less and a hardness of about 70 to 80 Shore C, and the core surface hardness is greater than the geometric center hardness by about 1 to 10 Shore C to define a shallow positive hardness gradient.05-23-2013
20080200283Golf ball layer compositions comprising modified amine curing agents - Polyurethane-based and polyurea-based compositions including modified amine curing agents for use in golf ball layers where modified amine curing agent of the invention allows control of the reaction rate by providing a composition with both primary and secondary amine linkages.08-21-2008
20110250989MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball having a solid core, an inner cover layer and an outer cover layer, which outer cover layer has a plurality of dimples on a surface thereof. The inner cover layer has a thickness of from 0.8 to 3.0 mm and a material hardness (Shore D) of from 50 to 80, the outer cover layer has a material hardness (Shore D) of from 35 to 60, and the material hardness (Shore D) of the inner cover layer is higher than the material hardness (Shore D) of the outer cover layer. The dimples number at least 250 and not more than 500, have a surface coverage (SR) of at least 70% and a volume ratio (VR) of at least 1.0%, are of at least three types of mutually differing dimple diameter (DM) and/or dimple depth (DP), and have an average depth of at least about 0.18 mm and a diameter-to-depth ratio (DM/DP) of not more than about 23. The ball has a coefficient of lift CL at a Reynolds number of 70,000 and a spin rate of 2,000 rpm which is maintained at 60% or more of the coefficient of lift CL at a Reynolds number of 80,000 and a spin rate of 2,000. This multi-piece solid golf ball is able to substantially reduce the distance traveled by the ball when struck at a high HS, while at the same time holding down the reduction in distance when struck at a low HS.10-13-2011
20100292030TRANSPORT SYSTEM FOR GOLF BALLS THROUGH PLASMA FIELD - An apparatus for use in transporting golf balls through a glow discharge plasma treating field, wherein the surface energy of the golf balls is increased to improve wetting ability and adhesion between layers of the golf balls. The apparatus involves a plurality of plastic open helical tubes for moving the balls such that every ball is afforded maximum exposure to the plasma field.11-18-2010
20120283040GOLF BALL CORE WITH SOFT OUTER TRANSITION VOLUME AND NEGATIVE HARDNESS GRADIENT - A golf ball including a unitary core having a volume, an outer surface, a geometric center, and an outermost transition volume adjacent to the outer surface, the core being formed from a substantially homogenous composition; and a cover layer including ionomer, metallocene-catalyzed polymer, polyester, polyamide, non-ionomeric thermoplastic elastomer, copolyether-ester, copolyether-amide, polycarbonate, polybutadiene, polyisoprene, or polystyrene block copolymer. The outermost transition volume is disposed between the core outer surface and the geometric center, the transition volume has an outer portion congruent with the core outer surface, and comprises the outermost 45% of the core volume or less. Both a hardness of the core outer surface and a hardness within the outermost transition volume are less than the hardness of the geometric center to define a negative hardness gradient.11-08-2012
20090124420Golf ball - The object of the present invention is to provide a golf ball that satisfies both of the flight distance at the shot with a driver, a long iron, and a middle iron and the controllability at the approach shot with a short iron and is also excellent in the abrasion resistance of the cover. The present invention provides a golf ball comprising a core consisting of a center and at least one intermediate layer covering the center, and a cover covering the core, wherein the cover is formed from a cover composition containing, as a resin component, a thermoplastic polyurethane (A) and a polyisocyanate mixture (B) in which a urethane prepolymer (b-1) having at least two isocyanate groups or a polyisocyanate (b-2) having at least three isocyanate groups is dispersed in a thermoplastic resin (b-3) which does not substantially react with an isocyanate group; and wherein the cover composition has a slab hardness of 60 or less in Shore D hardness, and the core has a hardness difference (Hs−Ho) between a surface hardness Hs and a center hardness Ho of from 15 to 50 in Shore D hardness.05-14-2009
20130210544Multi-Core Golf Ball Having Increased Initial Velocity At High Swing Speeds Relative To Low Swing Speeds - A golf ball having certain relationships and values of its initial velocities at various club head speeds is provided. The golf ball has a typical initial velocity at a low club head speed, but an increased initial velocity at a high club head speed. Therefore, the golf ball may be advantageously used by both amateur golfers having lower swing speeds and professional golfers having high swing speeds. The golf ball may also achieve an initial velocity of at least about 173 mph at a club head speed of about 125 mph, therefore achieving an increased total shot distance.08-15-2013
20130210545Multi-Core Golf Ball Having Increased Initial Velocity - A golf ball having certain relationships and values of its initial velocities at various club head speeds is provided. The golf ball may achieve an initial velocity of at least about 173 mph at a club head speed of about 125 mph, therefore achieving an increased total shot distance. The golf ball has multiple layers making up its core, and the golf ball may be a four piece golf ball.08-15-2013
20130210546Golf Ball With Specified Core Coefficient Of Restitution - A high performance golf ball includes a resin inner core, a rubber outer core, and a cover. The resin inner core is made of highly neutralized polymer, and may include a blend of different highly neutralized polymers. The cover is a two layer cover, with a hard inner cover and a thermoplastic polyurethane outer cover. The ball as a whole has properties to maximize performance and aesthetic properties, such as feel and sound.08-15-2013

Patent applications in class Diverse layer between spherical core and cover

Patent applications in all subclasses Diverse layer between spherical core and cover