Patent application number | Description | Published |
20090011864 | Multi-Layer Golf Ball - Golf balls consisting of a dual core and a dual cover are disclosed. The Shore C hardness of the outer core layer's outer surface is greater than that of the inner cover layer's outer surface, and the Shore C hardness of the outer core layer's outer surface is at least 20 Shore C units greater than that of the center. | 01-08-2009 |
20100003357 | GOLF BALL MOLD - An improved mold for making a golf ball comprises a pair of mold cups which are assembled together along mating surfaces that form a parting line. The mold cups are completely without sprues (vents). A lower mold cup has an undercut section of p to 360° in the rim area of the mating surface that allows for a very restricted but controlled flow at the parting line. The undercut section is of a depth of about 0.002 inch or less. This provides for a significant increase in the shear strength that results in a golf ball having less delamination, smaller voids, and a significant increase in impact cover durability. | 01-07-2010 |
20100004069 | GOLF BALL HAVING CO-INJECTED BI-MODAL ETHYLENE-ACID COPOLYMER DUAL LAYER COVER - A golf ball having a cover comprising thin inner and outer layers formed by a co-injected cup process. The inner layer comprising a hard Surlyn while the outer layer comprises a composition a bi-modal ethylene-acid copolymer composition. The core size will be greater than 1.50 inches in diameter. The golf ball will provide a cover that is compression molded and is very soft without sacrificing durability or shear resistance. The outer layer comprising a bi-modal ethylene-acid co-polymer composition. | 01-07-2010 |
20100056300 | MUTLI-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 |
20110092313 | DUAL-CORE COMPRISING ZERO GRADIENT CENTER AND POSITIVE GRADIENT OUTER CORE LAYER - A golf ball including an inner core having a geometric center and a first outer surface, the inner core being formed from a first substantially homogenous rubber composition, and an outer core layer formed from a second substantially homogenous rubber composition, the outer core layer having a second outer surface. An inner cover layer is formed over the core and includes an ionomeric material. An outer cover layer is formed over the inner cover layer and includes a castable polyurea or a castable polyurethane. The first outer surface has a hardness of up to about 20 Shore C less than a hardness at the geometric center to define a negative hardness gradient inner core and the second outer surface has a hardness of up to 18 Shore C greater than the geometric center hardness to define a positive gradient outer core layer and a shallow positive hardness gradient core. | 04-21-2011 |
20110291324 | MULTI-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. | 12-01-2011 |
20120264541 | DUAL-CORE COMPRISING ZERO GRADIENT CENTER AND POSITIVE GRADIENT OUTER CORE LAYER - A golf ball including an inner core having a geometric center and a first outer surface, the inner core being formed from a first substantially homogenous rubber composition, and an outer core layer formed from a second substantially homogenous rubber composition, the outer core layer having a second outer surface. An inner cover layer is formed over the core and includes an ionomeric material. An outer cover layer is formed over the inner cover layer and includes a castable polyurea or a castable polyurethane. The first outer surface has a hardness of up to about 20 Shore C less than a hardness at the geometric center to define a negative hardness gradient inner core and the second outer surface has a hardness of up to 18 Shore C greater than the geometric center hardness to define a positive gradient outer core layer and a shallow positive hardness gradient core. | 10-18-2012 |
20140113750 | MULTI-LAYER COVER GOLF BALL HAVING A HIGH ACID CASING AND ZERO GRADIENT CORE - A golf ball includes a single core having an outer surface and a geometric center. The core is formed from a substantially homogenous rubber composition. An inner cover layer is disposed about the core, the inner cover including a high-acid ionomer and having a material hardness of about 66 to 75 Shore D. The high-acid ionomer has an acid content of about 16% or greater. An outer cover layer is disposed about the inner cover layer, the outer cover including a polyurethane and having a material hardness of about 38 Shore D to about 56 Shore D. The core surface hardness is from 0 Shore C to 15 Shore C lower than the geometric center hardness to define a hardness gradient. | 04-24-2014 |
20140113751 | Multi-Layer Cover Dual Core Golf Ball Having A High Acid Casing And Low Gradient Center - A golf ball having an inner core layer having an outer surface and a geometric center and being formed from a rubber composition. An outer core layer surrounds the inner core to form a dual core. An inner cover layer surrounds the dual core, and includes a high-acid ionomer having a hardness of about 66 to 75 Shore D and an acid content of 16 wt. % or greater. An outer cover layer surrounds the inner cover layer, and includes a polyurethane and having a material hardness of about 38 to 56 Shore D. The inner core layer surface hardness is from 0 Shore C to 10 Shore C lower than the geometric center hardness to define a negative hardness gradient and the outer core layer has a surface hardness at least 10 Shore C greater than the geometric center hardness to define a dual core positive hardness gradient. | 04-24-2014 |
20140179462 | GOLF BALL COMPOSITIONS - Disclosed herein are multilayer golf balls having a layer with a higher Shore C hardness and a lower Shore D hardness than another layer. | 06-26-2014 |