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| Number | Title | Issue Date |
| 7338386 | Golf club shaft A light-weighted golf club shaft, which can stabilize the swing orbit of a club head during a swing and can allow a player to swing a golf club easily and to have a consistent shot pattern, is provided. The golf club shaft has a length of 42 to 48 inches and a weigh... | 03/04/2008 |
| 7328599 | Method and apparatus for making metal ball bats A process for manufacturing a hollow metal ball bat includes forming a shell into a tubular shape using a pilger mill. The wall thickness of the tube shell is reduced by drawing the tube shell with the draw bench. A handle section and a taper section are created usi... | 02/12/2008 |
| 7255652 | Lightweight, durable golf club shafts An ultra lightweight golf club shaft which includes a butt section, a tip section, and a tapered section interconnecting the same. The tapered section can be a constant taper, or include a plurality of step portions interconnected by frustoconical transition areas. ... | 08/14/2007 |
| 7140398 | Sports equipment having a tubular structural member A tubular structural member that provides directional resistance. The tubular structural member has a flexural resistance that is greater in one direction than in another. The tubular structural member can be employed in variety of devices or structures so as to eff... | 11/28/2006 |
| 7114362 | Method of making metal workpiece A method for draw forming a desired contour to the outer diameter of a tubular work piece provides that the selected work piece have a wall thickness uniform throughout its length. The outer diameter of selected work piece is reduced along essentially only a part of... | 10/03/2006 |
| 6984179 | Golf club shafts having variable taper lengths A golf club set which comprises a plurality of golf clubs having shafts of different tapered section lengths, at least two golf club shafts of the set having differing taper lengths and preferably differing taper angles, the tapered section length of the shaft incre... | 01/10/2006 |
| 6964618 | Golf club shaft support A rigid or semi-rigid, one-piece, shaped, planar golf club shaft support is provided for supporting the grip of a golf club above wet ground and/or grass on the golf course. The support has at least one lead-in entry and circular cutout positioned opposite an essent... | 11/15/2005 |
| 6937797 | Planar lightwave circuit and optical circuit A planar lightwave circuit is provided. The planar lightwave circuit includes a waveguide and a spotsize converter which is a part of the waveguide, wherein a core is embedded in a cladding in the waveguide, and the spotsize converter is located near an end face of ... | 08/30/2005 |
| 6881157 | Golf club having stabilized air flow structure A golf club comprises a handgrip; a club head, and a club body between the first end and the second end. A cross section area of the club body includes a front portion having a first and a second including surfaces that define a front cusp in front of said first and... | 04/19/2005 |
| 6805642 | Hybrid golf club shaft A hollow golf club shaft of circular cross-section comprises a tubular cover layer formed from an isotropic material and a tubular core layer formed from a non-isotropic material, wherein the cover layer and the core layer coextend substantially the entire length of... | 10/19/2004 |
| 6679787 | Golf shaft and golf club having the same It is a subject of the invention to show excellent decorative properties of golf shafts, to maintain the decorative properties for a long time, and to improve its usability. An upper ply being transparent or at least having translucency to the extent that... | 01/20/2004 |
| 6361840 | Injection molded, rigidized bladder with varying wall thickness for manufacturing composite shafts A pressurizable bladder for the manufacture of a composite shaft manufactured from a flexible elastomeric material and adapted for supporting at least one layer of fiber impregnated with resin has an opening for pressurization of the bladder to compress t... | 03/26/2002 |
| 6257993 | Golf club shaft Tubular golf club shaft made from composite materials comprising layers of fibers impregnated with plastic resin and provided over its length with at least one are of enlargement (6) and or narrowing. The curve of generation of the internal diameter of th... | 07/10/2001 |
| 6117021 | Golf club shaft A set of golf shafts is disclosed. The set comprises a plurality of shafts that decrease in length along the set. Each shaft includes a reverse taper section disposed a distance from the tip section on each shaft. The distance of the reverse taper section... | 09/12/2000 |
| 6056648 | Golf club shaft The present invention relates to a golf club shaft which is easy to be gripped, and superior in strength and balance in its shaft portion. A golf club shaft is constituted by fiber-reinforced prepreg formed from reinforcing fibers impregnated with synthet... | 05/02/2000 |
| 6045457 | Golf club shaft with an inner member The golf club according to the invention consists, besides a grip and a head, of a compound shaft which has at least an outer shaft defining a hollow portion, a head end, a head end section, a grip end section and a butt end; and an inner shaft partially ... | 04/04/2000 |
| 6024651 | Golf club shaft having contoured grip section and kick section A golf club shaft having a main body section and a grip section associated with the proximal end of the main body section. The grip section includes a top hand portion, a bottom hand portion and a substantially cylindrical bottom thumb portion. A kick sec... | 02/15/2000 |
| 5993328 | Golf club shaft A hollow golf club shaft including a plurality of diverging and converging substantially frustoconical sections. The sections have respective predetermined substantially constant wall thicknesses.... | 11/30/1999 |
| 5989133 | Golf club and shaft therefor and method of making same A golf club 20 includes a shaft 22 having a club head 32 secured to a tip end section 24 thereof and a grip 34 secured to a butt end section 26 thereof. A central section 28 of the shaft 22 is formed with a plurality of segments 44 which are of successive... | 11/23/1999 |
| 5976032 | Golf club reinforced by ridges A golf club is composed of a tapered shaft, a grip fastened at one end of the shaft, and a head fastened at another end of the shaft. The shaft is reinforced by a ridged structure consisting of at least two ridges extending along the direction of the long... | 11/02/1999 |
| 5964670 | Golf club shaft having improved feel A golf club shaft including a tip section, a grip section, a main body section and a vibration control section. The vibration control section prevents first harmonic vibrations, second harmonic vibrations, third harmonic vibrations, and so on from be tran... | 10/12/1999 |
| 5961396 | Golf club shaft Tubular golf club shaft made from composite materials comprising layers of fibers impregnated with plastic resin and provided over its length with at least one are of enlargement (6) and or narrowing. The curve of generation of the internal diameter of th... | 10/05/1999 |
| 5944618 | Golf club shaft having multiple conical sections A golf club shaft having a stiffness control section between the grip section and the main body section. The stiffness control section includes a first tapered portion and a second tapered portion. The circumference of the first tapered portion increases ... | 08/31/1999 |
| 5935017 | Golf club shaft The present invention is directed towards a golf club shaft which comprises an upper section, a tip section, and a lower section therebetween. The tip section connects with a golf club head. The lower section includes a first tapered section and a hump se... | 08/10/1999 |
| 5931744 | Adjustable stiffness golf club shaft A stepped golf club shaft with cylindrical segments joined by conical bands. The shaft is a composite with longitudinal and helical reinforcing fibers. The majority of the longitudinal fibers are located within the inner half of the shaft sidewall thickne... | 08/03/1999 |
| 5904627 | Golf club shaft A golf club shaft comprises three interconnected tubular members whose diameters, flexional rigidities, lengths, materials, etc. are selected to make the golf club shaft more flexible near a club head or a club grip or at a middle portion.... | 05/18/1999 |
| 5865688 | Golf club shaft having multiple flex points A golf club shaft is formed of graphite and includes an upper portion and tapers to a lower portion. The upper portion is designed to couple with a handle while the lower portion is adapted to coupled to a club head. A first flex point is disposed between... | 02/02/1999 |
| 5759112 | Golf club shaft Tubular golf club shaft made from composite materials comprising layers of fibers impregnated with plastic resin and provided over its length with at least one are of enlargement (6) and or narrowing. The curve of generation of the internal diameter of th... | 06/02/1998 |
| 5716291 | Golf club shaft Tubular golf club shaft made from composite materials comprising layers of fibers impregnated with plastic resin and provided over its length with at least one area of enlargement and/or narrowing. The curve of generation of the internal diameter of the s... | 02/10/1998 |
| 5700205 | Sports training system A system measures and records deflection of an elongated shaft such as the shaft of a golf club and provides a trace or diagram of the swing of the club. The system includes an elongated rod, mounted to the golf club shaft, and a separate recording system... | 12/23/1997 |
| 5685783 | Golf club shaft A golf club shaft is formed of a fiber-reinforced plastic is disclosed which has a constant inside diameter of at least 7 mm between the tip end and a point G1 and a varying inside diameter increasing from the point G1 to a point G2, wherein G1 and G2 are... | 11/11/1997 |
| 5685781 | Golf club shaft A hollow golf club shaft including a plurality of diverging and converging substantially frustoconical sections. The sections have respective predetermined substantially constant wall thicknesses.... | 11/11/1997 |
| 5665010 | Composite golf club shaft A golf club shaft has the usual handle portion at one end, a golf club head ounting portion at the opposite end, and a tapered intermediate portion therebetween. The tapered intermediate portion includes a substantially inflexible section adjacent the hand... | 09/09/1997 |
| 5634860 | Golf club and shaft therefor A golf club 10 includes a shaft 12 with a grip 14 assembled on a butt end 16 of the shaft. A club head 18 is mounted on a tip end 20 of the shaft 12. The shaft 12 is composed of steel and is formed with an intermediate section 22 having a plurality of sec... | 06/03/1997 |
| 5551691 | Golf club shaft A hollow, fiber-reinforced plastic golf club shaft is disclosed which is tapered from the grip to the hosel and which is provided with an enlarged portion in an intermediate portion so that the flexural rigidity of the shaft is abruptly changed at the enl... | 09/03/1996 |
| 5511780 | Golf club hosel A golf club hosel comprising three segments is disclosed, the upper segment being circular in cross-section and adapted to receive a golf club shaft, a tapered middle segment having a circular cross-section diminishing in diameter from top to bottom, and ... | 04/30/1996 |
| 5316299 | Golf club shaft A golf club comprising a shaft made of a composite material with a head (2) at its lower end and a grip (3) at its upper end. The shaft comprises three distinct sections, namely (a) a first, upper tapered portion (12a) covered by the grip, (b) a second, l... | 05/31/1994 |
| 5074555 | Tapered wall shaft with reinforced tip A tapered wall shaft with a reinforced tip includes a rear portion, a front portion and an interconnecting portion. The interconnecting portion has a smoothly decreasing outer diameter and a smoothly increasing wall thickness. The tapered wall shaft with ... | 12/24/1991 |
| 5022652 | Lightweight steel golf shaft An improved steel golf shaft formed in a generally cylindrical configuraiton with a tip end and a butt end, the shaft having a central aperture extending axially the entire length thereof, three sets of steps continuously decreasing in diameter externally... | 06/11/1991 |
| 4961576 | Constant wall shaft with reinforced tip A hollow metallic shaft for sporting implements includes a cylindrical tip section having a first constant wall thickness, a shank section including a tapered portion and having a second constant wall thickness, and a cylindrical portion located adjacent ... | 10/09/1990 |
