Class / Patent application number | Description | Number of patent applications / Date published |
473318000 | Including nonmetallic material or vibratory wave modifying feature | 76 |
20090118031 | Shaft Structure with Configurable Bending Profile - A shaft structure with a configurable bending profile is provided for golf clubs, fishing rods, and the like. The shaft structure employs a plurality of tensioned sections. The golfer, in practice, configures the bending profile of a golf shaft by adjusting the internal pressure of the sections in order to change the stiffness of that section. The combination of sections and their associated stiffness results in an advantageous bending profile. The golfer can, at any time and very easily, change the bending profile of the golf shaft. | 05-07-2009 |
20090124408 | Vibration Reduction Grip for Golf Clubs - A vibration reduction golf club grip is disclosed. The golf club grip includes a body having a substantially circular cross-sectional configuration throughout a length thereof. The body includes a first end having a first diameter and a second end having a second diameter. In addition, the body includes a longitudinal cavity, which is opened to the first end, adapted to receive a shaft of a golf club. The body also includes a circular cavity, which is opened to the second end, distributed around the longitudinal cavity, and the circular cavity is filled with a compressible material. | 05-14-2009 |
20090137336 | Golf Club - A golf club includes a shaft body, a head body connected to the shaft body, and a thermochromic portion provided on at least one of the shaft body and the head body and including a thermochromic blend. The thermochromic blend is made by blending a coating material or a molding material with a thermochromic material. | 05-28-2009 |
20090163288 | ADJUSTABLE STIFFNESS SHAFT STRUCTURE - A shaft structure with an adjustable stiffness is provided for golf clubs, fishing rods and like apparatuses. The shaft structure employs an inner and outer shaft structure. The golfer, in practice, configures the stiffness of a golf shaft, by adjusting the pressure of an inner shaft structure. The combination of outer and inner shaft structure stiffness results in an advantageous stiffness profile. The golfer can, at any time and very easily, change the stiffness profile of the golf shaft. | 06-25-2009 |
20100105498 | Versatile vibration-damped golf swing-weight system - A highly versatile damper-weight system enables the installation of adjustable swing-weight in a vibration-damped manner inside a golf club shaft. A plug assembly of selectable weight is inserted through a circular opening in the golf grip cap with a special tool, moved to any desired location within the shaft and securely fastened in place in a vibration-damped manner by radial expandable of a cylindrical resilient expandable element. A weight rod, made available in different materials, lengths and weights, is spaced from the shaft by one or more resilient damper sleeves to minimize shaft vibration. The expandable element is secured by a machine screw threaded into the upper end of the weight rod, and is dimensioned (unexpanded) to enable easy insertion and location adjustment of said plug assembly. The tool provides dual functions: as a screw head driver to expand/contract the expandable element radially by axial pressure/release as required, and as a removable coupler capable of pulling the plug assembly (with the expandable element unexpanded) upwardly, as well as pressing it downwardly within the shaft for adjustment to any desired location. | 04-29-2010 |
20100292022 | SHAFT STIFFENING DEVICE - A golf club shaft stiffening device with a flexible tubular body including an inner circumference and a length forming a tubular cavity is described. The inner circumference of the shaft stiffening device is sized and configured to circumscribe and constrictively engage an outer surface of a shaft and to cause the shaft to have an increased stiffness characteristic, allow the location of a kick point to be modified or modify other characteristics of the golf club. The shaft stiffening device may be housed on various sections of the shaft and may be slidably adjusted or positioned on the shaft. An associated method for fitting a golf club with a shaft stiffening device is also described. The shaft stiffening devices may be provided in a kit to facilitate fitting of a golf club with appropriate shaft stiffening devices. | 11-18-2010 |
20110172025 | GOLF CLUB SHAFT AND GOLF CLUB - A golf club shaft includes an outer shaft and an inner shaft disposed in a hollow portion of the outer shaft. A void portion is formed between the outer shaft and the inner shaft. The golf club shaft has a double structure including the outer shaft and the inner shaft. This allows both of the shafts to integrally operate and also allows one of the shafts to primarily operate. | 07-14-2011 |
20120077616 | Golf Clubs and Golf Club Heads - Golf clubs and/or golf club heads include a club head body defining an interior chamber, structure for engaging a shaft with the body, and/or a shaft engaged with the body. The club head body may have an overall length of at least 4.5 inches and an overall breadth of at least 4.2 inches. In other examples, the club head body may have an overall length of at least 4.6 inches and a ratio of the overall breadth dimension to the overall length dimension of 1 or less. If desired, the ratio of the head breadth to head length dimensions may be in a range from at least 0.94 to 1 or less. | 03-29-2012 |
20120100927 | INHIBITING VIBRATION IN SPORTS EQUIPMENT AND HAND TOOLS - During use of a golf club, the impact of the head of the club with a ball causes complex vibrations in the handle that are uncomfortable for the user and may adversely affect the force applied to and energy transferred to the ball. The invention aims to mitigate this problem by providing an end piece attached to an end of a shaft of the golf club thereby defining a tapered termination for an air column defined by said shaft. | 04-26-2012 |
20120190475 | Golf Club Vibration Dampening Device - A vibration dampening device that can be attached to the shaft and hosel of a golf club to absorb vibrations. The uniquely designed dampening device is positioned to immediately absorb vibrations of a golf club after the club head makes impact with a golf ball. The absorption of impact vibrations helps reduce injury that may be caused by stress from continual exposure to impact vibration. The vibration dampening device allows users to perform golf swing with less vibration during impact. | 07-26-2012 |
20130029778 | Forearm Crutch Putter - A forearm crutch putter integrating the utility of a golf putter and a forearm crutch for senior golfers. The forearm rest and grip handle provide support for the user to walk with the present invention being used as a crutch, while the putting grip and putter provide functionality of the present invention as a club. A shock absorber is also present on the shaft of the invention to dissipate vibrations generated from hitting a golf ball. | 01-31-2013 |
20130095949 | GOLF CLUB SHAFT AND GOLF CLUB USING THE SAME - A golf club shaft extending from a tip end to a butt end and made of fiber reinforced resin, comprises a weight being in a range of from 30 to 55 g, a whole length LS between the tip end and the butt end, a center of gravity of the shaft located with a distance LG from the tip end, a ratio of the distance LG to the whole length LS being in a range of from 0.54 to 0.65, a tip end portion which has a length of 300 mm from the tip end toward the butt end, the tip end portion including fibers including a pitch based carbon fiber and a PAN based carbon fiber, and said fibers in the tip end portion comprising, in weight, the pitch based carbon fiber of from 15 to 25% and the PAN based carbon fiber of from 85 to 75%. | 04-18-2013 |
20130095950 | GOLF CLUB SHAFT AND GOLF CLUB USING THE SAME - A golf club shaft extending from a tip end to a butt end and made of fiber reinforced resin, comprises a weight being in a range of from 30 to 55 g, a whole length LS between the tip end and the butt end, a center of gravity of the shaft located with a distance LG from the tip end, a ratio of the distance LG to the whole length LS being in a range of from 0.54 to 0.65, a butt end portion which has a length of 300 mm from the butt end toward the tip end, the butt end portion including fibers including a low elastic fiber having an elastic modulus in a range of from 5 to 20 t/mm | 04-18-2013 |
20130109493 | DAMPING DEVICE | 05-02-2013 |
20130172098 | TUBULAR BODY MADE OF FIBER-REINFORCED EPOXY RESIN MATERIAL - It is an object to provide a tubular body made from a novel fiber-reinforced epoxy resin material having improved strength. A tubular body made of a fiber-reinforced epoxy resin material according to the present invention is a tubular body made of a fiber-reinforced epoxy resin material comprising a cured product of an epoxy resin composition and a reinforcing fiber. The cured product of the epoxy resin composition has a swelling ratio of 20% by mass to 42.5% by mass in methyl ethyl ketone. | 07-04-2013 |
20140024474 | Flexible Golf Club Head - An improved golf club shaft comprised of a flexible insert device that adds additional flexibility to said club shaft and creates one or more pivot points along said shaft. The increased flexibility of the golf club shaft enables a golfer to impart greater force on a golf ball, and also dampens or reduces the amount of vibration and/or shock otherwise imparted to the golfer when the golf club head strikes the golf ball. | 01-23-2014 |
20140045605 | SHAFT FOR GOLF CLUB HAVING RIGIDITY IMPROVED AT INTERMEDIATE PART - A shaft for a golf club is capable of hitting a higher ball and reducing a spin on the ball. The shaft has a distal part that is provided with a clubhead, a proximal part that is provided with a grip, an intermediate part arranged between the distal and proximal parts, and a thick part set to thicken a wall thickness of the intermediate part relative to the distal part, a reinforcing part set at the intermediate part, or a combination of the thick part and the reinforcing part. With this, the shaft improves a rigidity at the intermediate part so that a change in rigidity between the distal part and the intermediate part has an inflection point. | 02-13-2014 |
20140073449 | METHOD OF APPLYING DECORATIVE LAYERS TO A STEEL SHAFT - A method of applying decorative layers to a steel golf club shaft is disclosed. The method may be performed on any type of steel shaft and comprises buffing the steel shaft, applying a primer or sealer coat, curing the sealer coat, buffing the sealer coat, applying a decal or decorative layer, applying clear coat over the shaft and decal, and curing the clear coat layer. Some embodiments comprise applying a layer of base coat color before applying a decal. Disclosed methods can, for example, improve adhesion between chrome-plated steel golf club shafts and paint, for golf club branding with increased resistance to wear. | 03-13-2014 |
20140171215 | GOLF CLUB SHAFT - A golf club and golf club shaft includes a tubular member having at least one neck portion with a reduced outer diameter and at least one relatively rigid two-piece sleeve secured to the tubular member in overlying relationship to each neck portion. The two-piece sleeve defines a small central gap filled by a compressible ring to allow the two otherwise longitudinally aligned sleeve pieces to pivot relative to one another under dynamic loading of the tubular member during a golf swing, and then upon reaching a limit point restrict additional deflection or bending of the tubular member. | 06-19-2014 |
20150119162 | GOLF CLUB - A golf club includes a shaft; a head mounted to the tip end of the shaft; a grip mounted to the butt end of the shaft; a first vibration damping member arranged on the head side of the shaft; and a second vibration damping member arranged on the grip side of the shaft. The first range of the shaft in which the first vibration damping member is arranged includes a position of the shaft corresponding to the top end of the hosel of the head and has a length of 25 to 250 mm in the longitudinal direction of the shaft. The second range of the shaft in which the second vibration damping member is arranged includes a position of the shaft corresponding to the tip end of the grip and has a length of 150 to 250 mm in the longitudinal direction of the shaft. | 04-30-2015 |
20150306478 | DAMPING DEVICE - A golf club ( | 10-29-2015 |
473319000 | Filament (e.g., fiber, etc.) or sheet wrapped about shaft longitudinal axis | 51 |
20080200279 | Iron-type golf club and FRP shaft therefor - A club shaft for an iron-type golf club is made of a fiber reinforced resin. The weight W of the club shaft per 39 inches is not less than 30 grams and not more than 60 grams. The average bending rigidity EIa of the club shaft is not more than 5.0 kgf sq.m. An expression (1) EIa>=0.05 W+2.0 is satisfied. Preferably, an expression (2) EIa>=0.05 W+2.5 is satisfied. More preferably, an expression (3) EIa>=(1/15)W+2.0 is satisfied. Even if golfers can not make powerful swings through the swing speed is high, the carry distance and the directionality of the hit ball can be improved. | 08-21-2008 |
20080200280 | Iron-type golf club and FRP shaft therefor - A club shaft for an iron-type golf club is made of a fiber reinforced resin. The weight W of the club shaft per 39 inches is not less than 55 grams and not more than 95 grams. The average bending rigidity EIa of the club shaft is not more than 1.5 kgf sq.m. An expression (1) EIa=<0.05W−1.25 is satisfied. Preferably, an expression (2) EIa=<0.05W−1.75 is satisfied. More preferably, an expression (3) EIa>=0.1W−6.5 is satisfied. Even if golfers are weak in flexing the club shafts though the golf swings are powerful, the carry distance can be increased. | 08-21-2008 |
20080287212 | Golf Club Shaft and Method of Fabricating the Same - A precise impact and increased ball drive distance may be achieved due to an increase of elastic force and restoring force of a golf club shaft, when the golf club shaft includes: a first shell portion interiorly disposed in the golf club shaft; at least one elastic member disposed in a length direction on an exterior circumference of the first shell portion; and a second shell portion including carbon and enclosing the first shell portion and the at least one member. | 11-20-2008 |
20090011851 | Sports Equipment - It is a sport equipment | 01-08-2009 |
20090029792 | Golf club shaft - A golf club shaft ( | 01-29-2009 |
20090124409 | METHOD OF APPLYING A COVER TO A GOLF CLUB SHAFT - A method of applying a cover to a shaft of a golf club includes fitting the cover onto the golf club such that a shaft of the club passes through a sleeve of heat-shrinkable material adapted to fit around an exposed portion of the shaft, positioning the cover such that the sleeve is substantially in register with the exposed portion of the shaft, and applying heat to the sleeve to cause the sleeve to shrink onto the exposed portion of the shaft. | 05-14-2009 |
20090209360 | GOLF CLUB - A graphite golf club which is formed by a mandrel is provided. The graphite golf club comprises a club head which strikes a golf ball; a club shaft which comprises a coupling unit to be coupled with the club head and a main body unit extending from the coupling unit the mandrel comprising a mandrel joint unit which is formed with mandrel steps that drastically decrease in diameter the coupling unit and the main body unit comprising a lower sheet layer contacting and overlapping the mandrel and an upper sheet layer overlapping an upper part of the lower sheet layer; the lower sheet layer and the upper sheet layer forming a sheet joint unit which comprises sheet steps drastically decreasing in diameter corresponding to the mandrel steps one of the lower and upper sheet layers being cut between the sheet joint unit and overlapping and surrounding on the mandrel a direction of fibers of one of the lower and upper sheet layers divided and cut by the sheet joint unit being different from a direction of fibers of neighboring lower and upper sheet layers; and a joint unit which is formed with steps drastically decreasing in external diameter corresponding to the sheet steps. Thus, shock absorption, stable swing speed and improved power may be available. | 08-20-2009 |
20090215550 | MATRIX COMPOSITE GOLF CLUB SHAFT AND MANDREL - A golf club shaft is provided that has a grip end opposite a head end and defining a length of the shaft extending between those two ends. The shaft has a tubular cross-section over at least one portion of the shaft length which cross-section has a substantially circular outer periphery and a polygon inner periphery formed of a plurality of between 4 and 24 flats, and preferably formed of 8-16 flats. A mandrel having the shape of the inner periphery of the shaft is also provided, as is a method of forming the shaft that uses the mandrel and composite matrix materials. | 08-27-2009 |
20090264216 | SHAFT FOR GOLF CLUB - A shaft according to the present invention is obtained by winding and curing a prepreg sheet having a matrix resin and a fiber. The prepreg sheet includes a full-length sheet and a partial sheet. At least a part of the partial sheet forms a tip bias layer disposed in a tip portion of the shaft. A fiber of the first tip bias layer is oriented at an angle which is equal to or greater than 25 degrees and is equal to or smaller than 65 degrees with respect to an axis of the shaft. A fiber of the second tip bias layer is oriented at an angle which is equal to or greater than −65 degrees and is equal to or smaller than −25 degrees with respect to the axis of the shaft. The shaft is obtained by winding a tip bias stuck body (V | 10-22-2009 |
20090305809 | GOLF CLUB SHAFT AND GOLF CLUB THEREWITH - A golf club shaft that has a flexural rigidity distribution allows a user to easily adjust swing timing even when a golf club using the golf club shaft is long. The golf club shaft comprises a section between a point 500 mm and a point 800 mm from a tip end of the shaft, wherein the flexural rigidity El of the shaft monotonically increases in the section from the point 500 mm to the point 800 mm, wherein Δ1/Δ2 is at least about 1.5 provided that the rate of change of the flexural rigidity EI of the shaft in a first subsection between a point 500 mm and a point 600 mm from the tip end is denoted by Δ1, and the rate of change of the flexural rigidity EI of the shaft in a second subsection between a point 700 mm and a point 800 mm from the tip end is denoted by Δ2, and wherein the flexural rigidity EI of the shaft at a point 750 mm from the tip end is at least about 4.1×10 | 12-10-2009 |
20090305810 | SHAFT FOR GOLF CLUB WITH OVERLAPPED JOINT - The present invention provides a shaft for a golf club which is constructed such that overlapped joints are formed therein, thus providing effects of increasing the distance that a golf ball is driven, and of preventing the shaft of the golf club from momentarily twisting. To achieve the above-mentioned purpose, the shaft of the present invention includes an inner layer ( | 12-10-2009 |
20090305811 | Golf Club Shaft - It is object of the present invention to provide a golf club shaft superior in accuracy, minimizing a displacement between thermosetting resin layers, capable of obtaining a feeling close to the feeling of a steel shaft, and superior in stability. To solve the above problems, a golf club shaft of the present invention uses a golf club shaft comprising a torsional rigidity holding layer made of thermosetting resin including reinforcing fibers diagonally crossed in the longitudinal direction of said shaft and a UD flexural rigidity holding layer made of thermosetting resin including reinforcing fibers aligned in parallel to the longitudinal direction of said shaft, characterized in that at least a part of said torsional rigidity holding layer includes a plain weave fabric layer obtained by winding and curing like a shaft-shape a plain weave prepreg which lets a plain weave fabric having mutually woven warps and wefts impregnate with thermosetting resin in such a way that said warps and wefts are diagonally crossed in the longitudinal direction of said shaft. | 12-10-2009 |
20100022324 | GOLF CLUB SHAFT | 01-28-2010 |
20100081516 | GOLF CLUB SHAFT AND GOLF CLUB USING THE SAME - A golf club shaft formed by winding prepregs made of uncured thermosetting resin into a tapered shape and curing the prepregs thermally, the prepregs include a first woven fabric prepreg which is made of one of a triaxial woven fabric or a tetra-axial woven fabric that are impregnated with uncured thermosetting resin, and a second woven fabric prepreg which is made of one of a triaxial woven fabric or a tetra-axial woven fabric that are impregnated with uncured thermosetting resin. | 04-01-2010 |
20100190570 | Golf club head and golf club shaft - A golf club head includes a club head body having a striking face, a soleplate, a crown, a toe, a heel and a hosel shaped and dimensioned for receiving a shaft. The club head body includes a body shell composed of the striking face, soleplate, crown, toe and heel, wherein the body shell has a reduced mass allowing for greater weight manipulation within the club head body. | 07-29-2010 |
20100234124 | GOLF CLUB SHAFT AND GOLF CLUB - A golf club shaft is provided in which the flexural rigidity of the distal end portion can be improved with no change in flexural rigidity on the proximal end while the dispersion in the values of the flexural rigidity in the circumferential direction can be reduced without the use of a distal-end reinforcing layer that causes discontinuous points in the lengthwise direction in flexural rigidity. A golf club shaft is provided which satisfies the following conditions: that the golf club shaft includes at least three rectangular carbon prepregs as full-length layers, that all the rectangular carbon prepregs are each composed of a 0-degree layer, the long fiber direction of which is coincident with the longitudinal direction of the golf club shaft, that all the rectangular carbon prepregs are configured such that the amount of overlapping of each rectangular carbon prepreg is zero on the large-diameter proximal end portion of the gold club shaft and increasingly overlaps at positions increasingly toward the distal end of the golf club shaft, and that wind start positions of the rectangular carbon prepregs are different from one another. | 09-16-2010 |
20100267464 | GOLF CLUB SHAFT - A golf club shaft has a more attractive appearance than a coating of plating and also achieves a rustproofing effect within the shaft, while avoiding the problem of an increase in weight and processing of effluents associated with plated shafts. The golf club shaft has a shaft body, a covering film formed by chemical treatment of an outside surface and an inside surface of the shaft body, a coating film layer formed by electric painting on the covering film of at least the outside surface; and a pigment layer, in which a polarizing powder is dispersed, which is coated on the coating film layer. | 10-21-2010 |
20100285897 | GOLF CLUB SHAFT - A shaft of the present invention has a tip reinforcing layer. A prepreg s | 11-11-2010 |
20100317456 | GOLF CLUB SHAFT AND GOLF CLUB | 12-16-2010 |
20110143856 | EPOXY RESIN COMPOSITION AND PREPREG USING THE SAME, FIBER-REINFORCED COMPOSITE RESIN TUBULAR BODY MANUFACTURED FROM THE PREPREG AND MANUFACTURING METHOD THEREFOR, AND FIBER-REINFORCED COMPOSITE RESIN MOLDED BODY - By completing curing in a short period of time even at low temperatures and using an epoxy resin composition as a matrix resin of a prepreg, it is possible to obtain a fiber-reinforced composite plastic product such as a fiber-reinforced tubular composite with excellent mechanical properties and, more particularly, excellent impact resistance. The epoxy resin composition includes A component, B component, C component, D component and E component, where the content rate of sulfur atoms is equal to or more than 0.2 wt % and equal to or less than 7 wt %, and the content rate of the C component is equal to or more than 1 wt % and equal to or less than 15 wt %. A component: epoxy resins, B component: reactive products of the epoxy resins and an amine compounds including the sulfur atom in a molecule (the unreacted epoxy resins and/or the amine compounds may be included), C component: polyamide compounds soluble in the A component, D component: urea compounds, and E component: dicyandiamide. | 06-16-2011 |
20110151991 | Golf Club Shaft - It is object of the present invention to provide a golf club shaft superior in accuracy, minimizing a displacement between thermosetting resin layers, capable of obtaining a feeling close to the feeling of a steel shaft, and superior in stability. | 06-23-2011 |
20110195799 | GOLF CLUB SHAFT - A shaft for a golf club is comprised of upper, central and lower sections. Flex is isolated to the central section of the club by making the upper and lower sections relatively stiffer than the central section. Though more flexible, the central section resists twisting by fabricating the section using a higher percentage of diagonally oriented fibers laid in a crossing pattern. A thickened tip and larger diameter butt end enhance resistance to twisting of the shaft. | 08-11-2011 |
20110294593 | GOLF CLUB BY REVERSE INTERLAMINAR PLACEMENT (RIP) TECHNOLOGY - A golf club shaft is formed having a flexural rigidity layer at last one third the length of which is encased in an outer layer. The shaft is formed by applying sheets of composite material to a mandrel. Sheets forming the flexural rigidity layer include unidirectional fibers oriented substantially in parallel with the longitudinal axis of the shaft. The outer layer may include composite material sheets each having unidirectional fibers oriented at an angle with respect to the shaft's longitudinal axis. An innermost layer of the shaft may be formed of composite material sheets having fibers oriented at an angle with respect to the shaft's longitudinal axis. | 12-01-2011 |
20120165113 | GOLF CLUB SHAFT | 06-28-2012 |
20120225732 | GOLF CLUB SHAFT AND GOLF CLUB USING THE SAME - A golf club shaft formed by winding prepregs made of uncured thermosetting resin into a tapered shape and curing the prepregs thermally, the prepregs include a first woven fabric prepreg which is made of one of a triaxial woven fabric or a tetra-axial woven fabric that are impregnated with uncured thermosetting resin, and a second woven fabric prepreg which is made of one of a triaxial woven fabric or a tetra-axial woven fabric that are impregnated with uncured thermosetting resin. | 09-06-2012 |
20120295734 | GOLF CLUB SHAFT - In a shaft | 11-22-2012 |
20120295735 | GOLF CLUB SHAFT AND GOLF CLUB USING THE SAME - A golf club shaft and a golf club using such a golf club shaft are achieved in which the isotropy of the prepregs configuring a torsion rigidity holding layer is high and in which sufficient torsional rigidity can be secured with a lesser number of plies of prepregs. | 11-22-2012 |
20130017902 | Golf Club Shaft Assemblies With Partially Bonded and Unbonded Permanent InsertsAANM Cheng; Michael H.L.AACI Simi ValleyAAST CAAACO USAAGP Cheng; Michael H.L. Simi Valley CA US - A golf club shaft assembly including a golf club shaft and a permanent shaft insert that is partially bonded, or is unbounded, to the golf club shaft. | 01-17-2013 |
20130035177 | GOLF CLUB SHAFT AND METHOD OF PRODUCING THE SAME - An object is to achieve a golf club shaft and a method of producing the same, wherein the weight balance in the shaft longitudinal direction can be reproducibly and easily set and wherein the golf club shaft is produced at a low cost and has high durability. The golf club shaft includes a hollow-cylindrical shaft body made of fiber-reinforced resin and a weight-adding cylinder installed in a cylindrical space of the shaft body. At least a part of an outer diameter side of the weight-adding cylinder is embedded in an cylindrical embedded recess that is formed in an inner wall of the shaft body, wherein a grip-side cylindrical end surface of the weight-adding cylinder and a grip-side cylindrical end surface of the cylindrical embedded recess are in contact with each other. | 02-07-2013 |
20130143689 | GOLF CLUB SHAFT AND GOLF CLUB - According to an aspect of this invention, there is provided a golf club shaft including a prepreg containing a carbon fiber, wherein the prepreg is winded and cured, and a winding thickness of the prepreg on a striking face is larger than a winding thickness of the prepreg on any other portion. | 06-06-2013 |
20130165250 | GOLF CLUB SHAFT - A shaft full length is defined as Ls and a distance between a tip end of the shaft and a center of gravity G of the shaft is defined as Lg. In a shaft | 06-27-2013 |
20130172099 | GOLF CLUB SHAFT AND GOLF CLUB - A golf club shaft has a tip end to which a golf club head is attached and a butt end to which a grip is attached, wherein the shaft is composed of a fiber reinforced resin having a fiber layer, the fiber layer contains a bias layer having bias fibers oriented at an angle with respect to an axial direction of the shaft, the bias layer includes a tip-side bias layer extending from the tip end toward the butt end and having a butt-side end terminating without reaching the butt end and a butt-side bias layer extending from the butt end toward the tip end and having a tip-side end terminating without reaching the tip end, and bias fibers in the tip-side bias layer has a tensile elastic modulus smaller than that of bias fibers of the butt-side bias layer. | 07-04-2013 |
20130210539 | GOLF CLUB PUTTER - A golf club putter includes a clubhead body sufficiently weighted to define a center of gravity of the golf club. The putter includes a reverse tapered shaft, preferably a graphite or fiberglass composite, elongated along a central axis continuously tapering radially inwardly, from: a larger outside diameter adjacent a tip end attached to the clubhead body, to: a smaller outside diameter adjacent a grip end. The reverse tapered shaft comprises longitudinally oriented graphite or fiberglass fibers in an arrangement that enables shaft torsional distorting forces imposed at the grip end during putting to be imparted to the clubhead and a golf ball thereby. | 08-15-2013 |
20130210540 | GOLF CLUB PUTTER - A golf club putter includes a clubhead body sufficiently weighted to define a center of gravity of the golf club, which center of gravity may be adjusted for left and right handed golfers. The putter includes a graphite or fiberglass composite shaft, elongated along a central axis continuously tapering radially inwardly, from: a larger outside diameter adjacent a tip end attached to the clubhead body, to: a smaller outside diameter adjacent a grip end. Preferably, the composite shaft is reverse tapered. The reverse tapered shaft comprises longitudinally oriented graphite or fiberglass fibers in an arrangement that enables shaft torsional distorting forces imposed at the grip end during putting to be imparted to the clubhead and a golf ball thereby. | 08-15-2013 |
20130231201 | GOLF CLUB SHAFT - Provided is a golf club shaft. When a distance from a front end of the shaft to a center of gravity of the shaft is L | 09-05-2013 |
20130260911 | GOLF CLUB SHAFT AND GOLF CLUB - A golf club shaft is formed by curing wound fiber-containing prepregs and has a tip side and a butt side. In an embodiment, the prepregs include pitch-based carbon fiber-containing prepregs with a low elastic modulus, which are wound on the tip side, and polyacrylonitrile (PAN) based carbon fiber-containing prepregs, which are wound in an outermost layer on the tip side. In another embodiment, the prepregs include low-elasticity carbon fiber-containing prepregs wound on the tip side, and high-elasticity carbon fiber-containing prepregs wound on the butt side. In yet another embodiment, the prepregs include low-elasticity carbon-containing prepregs, which are wound on the butt side, and high elasticity carbon-containing prepregs, which are wound on the tip side. | 10-03-2013 |
20130267344 | HYBRID GOLF SHAFT - Disclosed a hybrid golf shaft in which one or more aramid fiber containing prepregs (H) are laminated in a length section of 5 cm or more of the whole length of the golf shaft, and three or more carbon fiber prepregs (C) are laminated in a length section of 50 cm or more of the whole length of the golf shaft. The golf shaft is configured in that aramid prepregs (H | 10-10-2013 |
20130324288 | GOLF CLUB SHAFT | 12-05-2013 |
20140106895 | GOLF CLUB SHAFT | 04-17-2014 |
20140221122 | BEND-TWIST COUPLED GOLF CLUB SHAFT - Embodiments of the subject invention relate to a method and apparatus for providing a golf club shaft that has coupling between one or more bending modes and one or more twisting modes of deformation. In a specific embodiment, bending the shaft along a central longitudinal axis of the shaft in a plane of bending results in twisting of the shaft about the same central longitudinal axis of the shaft. | 08-07-2014 |
20150038254 | GOLF CLUB SHAFT | 02-05-2015 |
20150038255 | SHAFT FOR GOLF CLUBS | 02-05-2015 |
20150094160 | SHAFT FOR GOLF CLUBS | 04-02-2015 |
20150297963 | GOLF CLUB SHAFT - The present invention provides a high-balance-point shaft capable of increasing ball speed. A golf club shaft formed by laminating fiber-reinforced resin, wherein the balance point obtained by formula below is set to be 53% or higher; and the kickpoint obtained by formula below is set to be 44% or higher. | 10-22-2015 |
20150306479 | GOLF CLUB SHAFT - A golf club and golf club shaft includes a tubular member having at least one neck portion with a reduced outer diameter and at least one relatively rigid two-piece sleeve secured to the tubular member in overlying relationship to each neck portion. The two-piece sleeve defines a small central gap filled by a compressible ring to allow the two otherwise longitudinally aligned sleeve pieces to pivot relative to one another under dynamic loading of the tubular member during a golf swing, and then upon reaching a limit point restrict additional deflection or bending of the tubular member. | 10-29-2015 |
20160016056 | GOLF CLUB SHAFT | 01-21-2016 |
473320000 | Including metal | 5 |
20100317457 | Multi-sectional co-cured golf shaft - A shaft for a golf club having a total length and a total weight. The shaft includes first and second tubular portions. The first and second tubular portions are formed of first and second materials, respectively. The second tubular portion has a proximal end and a tip end. The tip end has an outside diameter of less than 0.400 inches. The distal end of the first tubular portion is co-cured to the proximal end of the second tubular portion. The shaft has a resistance to twisting about a longitudinal axis of the shaft, when tested under a torsional stability test and measured at an approximate midpoint of the total length of the shaft, of less than 2.0 degrees in a torsional stability test. The shaft when measured from the tip end of the shaft in a balance point test device has a balance point of less than 46 percent. | 12-16-2010 |
20100323810 | SHAFT FOR GOLF CLUB - A shaft for a golf club comprises a plurality of fiber-reinforced resin layers. A plurality of circumferentially oriented metal wires are provided at intervals of 1 mm to 4 mm in an axial direction of the shaft having a length in an axial direction of more than 100 mm and less than 300 mm and being centered at a position of 3.25×10 | 12-23-2010 |
20110065526 | GOLF CLUB SHAFT AND GOLF CLUB - A golf club shaft has a function of attenuating the vibration of the shaft at the time of impact and also having a function of stabilizing the struck ball. A shaft has an inner bias layer having a fiber direction that was inclined with respect the shaft axial direction and an outer bias layer having a fiber direction that is inclined with respect to the shaft axial direction in a direction opposite from that of the inner bias layer laminated as a fiber-reinforced resin layer, and a vibration-damping material sheet layer having a vertical-direction length of about 110 mm to about 150 mm disposed between the inner bias layer and the outer bias layer, with region of the position of the end of the grip attachment location as the rear end in the vertical direction. | 03-17-2011 |
20130137530 | GOLF CLUB SHAFT AND GOLF CLUB - A golf club is formed by winding and hardening a plurality of prepregs. High specific gravity materials having a higher specific gravity than carbon fiber are arranged on the butt side of the golf club. Arrangement of the high specific gravity materials is achieved by winding a high specific gravity material containing prepreg containing carbon fiber and a higher specific gravity material than the carbon fiber. Alternatively, the arrangement of the high specific gravity materials may be achieved by winding another high specific gravity material containing prepreg containing a glass fiber. | 05-30-2013 |
20150352416 | GOLF CLUB AND SHAFT - The present invention provides a golf club shaft. The shaft is made of a fiber reinforced resin. When a position 100 mm apart from a distal end of the shaft is represented by P | 12-10-2015 |
473321000 | And metal | 4 |
20090131195 | GOLF CLUB HEAD OR OTHER BALL STRIKING DEVICE WITH DISCRETE REGIONS OF DIFFERENT DENSITY - Ball striking devices may include: (a) a sole member; (b) at least one intermediate body member; (c) a crown member; and (d) a face member. The materials making up the sole member, the intermediate body member(s), and the crown member may be selected so that the densities of the materials generally increase as one moves in a direction from the sole member toward the crown member. Such devices may be formed as golf club heads and/or golf clubs (such as “wood-type” golf clubs and golf club heads). | 05-21-2009 |
20110294594 | STRONG, LIGHTWEIGHT ARTICLE CONTAINING A FINE-GRAINED METALLIC LAYER - Articles for automotive, manufacturing and industrial applications including shafts or tubes used, for example, as golf club shafts, ski and hiking poles, fishing rods or bicycle frames, skate blades and snowboards are at least partially electroplated with fine-grained layers of selected metallic materials. Parts with complex geometry can be coated as well. Alternatively, articles such as conical or cylindrical golf club shafts, hiking pole shafts or fishing pole sections, plates or foils and the like can also be electroformed of fine-grained metallic materials on a suitable mandrel or temporary substrate to produce strong, ductile, lightweight components exhibiting a high coefficient of restitution and a high stiffness for use in numerous applications including sporting goods. | 12-01-2011 |
20130116063 | LIGHT-WEIGHT COATINGS HAVING ENHANCED DURABILITY - Light-weight and/or low density paint and coating formulations that yield light-weight coatings which exhibit advantageous durability and wear resistance, including golf club shafts incorporating such paint and coating formulations. | 05-09-2013 |
20160059095 | Mutli-Color Golf Club and Process for Producing Same - The present disclosure provides a process for producing a multi-color golf club shaft and the resultant multi-color golf club. The process includes providing a golf club shaft and first applying a first color powder coating material onto at least a portion of the shaft to form a first powder coated shaft. The process includes melt-adhering the first color powder coating material to at least a portion of the shaft to form a first color coated shaft. The process includes second applying a second color powder coating material onto at least a portion of the shaft. The process includes curing the shaft and forming a multi-color powder coating adhered to at least a portion of the shaft. | 03-03-2016 |