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8157669 |
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...
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8128508 |
Shaft set for golf clubs and club set including the same
A shaft set includes plural shafts used for wood-type golf clubs each having a length of 40 inches to 48 inches. Among the plural shafts, a shaft used for a longer club has a smaller amount of...
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8021244 |
Golf club shaft
A shaft 6, which is a tubular body, includes a laminate of fiber reinforced resin layers. This fiber reinforced resin layer includes a matrix resin and a fiber. When a portion with a minimum...
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7972223 |
Golf club
A graphite golf club which is formed on 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...
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7967698 |
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....
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7967697 |
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...
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7935002 |
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...
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7918746 |
Golf club shaft
A shaft 6 is formed by a prepreg sheet. The sheet of the shaft 6 includes full length sheets (a2), (a3), (a8) and (a11) provided wholly in a longitudinal direction of the shaft, and partial sheets...
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7906191 |
Wavy composite structures
Construction and advantages of improved wavy composite structures made from wavy composite, unidirectional composites, and damping materials is revealed. By combining wavy composite laminae in...
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7862447 |
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...
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7862448 |
Sports equipment
It is a sport equipment 2 using a partially hardened sheet form prepreg 10 formed by impregnating a reinforced fiber material 6 disposed substantially parallel with a thermal hardening resin...
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7803063 |
Golf club shaft
A golf club shaft (10) having a weight not less than 30 g nor more than 60 g. The golf club shaft (10) includes a bias layer (B1) composed of a prepreg whose reinforcing fibers have an orientation...
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7780546 |
Golf club shaft and method of producing the same
A composite golf club shaft having a reinforcing ribbon of composite material spiraling along an intermediate portion of the shaft and bonded thereto to reinforce the hoop strength of the shaft....
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7758445 |
Method for producing golf shafts of like flex
The method of producing tubular golf club shafts (10) of the same longitudinal stiffness and varying weights by wrapping composite materials on a tapered mandrel (15), or mandrels, having a given...
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7736245 |
Golf club shaft and golf club
A golf club shaft 2 made of a fiber-reinforced resin having a weight W of 30 to 55 g calculated as a shaft having a length of 46 inches and an average flexural rigidity EIa of 1.5 to 4.0 kgf·m2 ...
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7736244 |
Golf club with flexible grip portion
A golf club shaft wherein the flexibility of the club over a short segment at the butt or grip end is increased in a controlled manner. A flexible tubular shaft insert of approximately 7 to 10...
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7727083 |
Golf club shaft
A golf club shaft having at least six full-length layers composed of prepregs. The full-length layers are divided into an inner-layer part including a half of the full-length layers and an...
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7585231 |
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...
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7524248 |
Shaft for golf clubs and golf club
Points obtained by plotting flexural rigidity EI measured at ten sites on a shaft are defined as from T (1) to T (10) in this order from the head side, and the formula representing a line K that...
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7517288 |
Golf club shaft
A golf club shaft composed of a laminate of prepregs each containing a matrix resin and reinforcing fibers impregnated with the matrix resin. The matrix resin of at least one of the prepregs...
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7500922 |
Golf club shaft
A golf club shaft (10), tubular and having a hollow portion, which includes a laminate of fiber reinforced prepregs (21 through 23, 24A, 25 through 29). The laminate has a first part (I) composed...
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7427240 |
Shaft for golf clubs and golf club
Each point obtained by plotting flexural rigidity EI measured at ten sites on a shaft is defined as from T(1) to T(10) in this order from the head side, and the formula representing a line K that...
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7361098 |
Golf club shaft
A wood golf club (10) which is not less than 44 inches in a length thereof and whose head (14) is not less than 190 g in a weight thereof. The value of a ratio of a rigidity value EIt at a position...
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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...
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7318780 |
Golf club
A golf club comprises a club shaft having a tip end and a butt end, a club head being attached to the tip end of the club shaft, and a golf grip being attached to a region of the club shaft...
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7169056 |
Golf club set and golf club shaft set
Disclosed is a golf club set having harmonized golf club performance among the club numbers. In the golf club set, for at least three golf clubs, a ratio or a sum of a frequency, the frequency...
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7077761 |
Golf club and method of making golf club
A wood-type golf club including a club shaft and a club head, wherein the club length is in a range of from 43 to 48 inches, the volume of the club head is in a range of not less than 250 cc, and...
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7070512 |
Golf club
A golf club comprises a club shaft and a hollow club head, wherein the club head has a loft angle of from 14 to 18 degrees, a head volume of not less than 250 cc, and a sweet spot at a vertical...
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7037212 |
Fiber reinforced plastic golf shaft
A golf shaft made of fiber reinforced plastic and including a tip portion attached to a head, a butt portion attached to a grip, and a middle portion located between the tip portion and the butt...
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7025691 |
Golf putter shaft
In a putter shaft having a tip end and a butt end, a curvature of the putter shaft is represented by a curvature curve of the putter shaft which increases monotonously from the tip end to the butt...
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6929562 |
Golf club shaft and iron golf club set
A golf club shaft (1) in which a difference between a maximum EI value and a maximum EI value in the range from a tip (1a) to a position spaced therefrom at a distance corresponding to not less...
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6905422 |
Shaft for light-weight golf clubs
A golf club shaft is 35-50 percent lighter than a conventional shaft while maintaining the outer diameter and structural characteristics of conventional shafts. The shaft has at least four layers...
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6875127 |
Golf club shaft
In a golf club shaft, composed of a laminate of prepregs made of a fiber reinforced resin, the weight of a unit length of the golf club shaft in the axial direction thereof is set to not less than...
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6827656 |
Higher overall flex golf shaft
A composite golf club shaft is constructed having a reduced butt diameter of 0.400 to 0.560 inches in diameter. The shaft tapers without intentional discontinuities from the reduced-diameter butt...
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6773358 |
Golf club shaft
At least one layer of inclined prepregs having reinforcing fiber oriented an angles not 0° and 90° with respect to the axis of a golf club shaft is wound by unintegral turns more than zero at at l...
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6743116 |
Separable-shaft golf club
A golf club includes first and a second shaft members that are releasably connected by a connector that is preferably substantially hollow. The connector has a male connector that has a first...
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6709347 |
Sporting rod member using solid road
A sporting rod member which is strong against flexure, which is improved in tough and balance when it is flexed, and which can be made finer in thickness and lighter in weight. The sporting rod...
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6705954 |
Golf club shaft and method for manufacturing same
A golf club shaft having an optimal set of materials and sloped sections provides appropriately high rigidity, ease of use, and is inexpensive and easy to manufacture. A sloped section expands...
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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...
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6666778 |
FRP golf club shaft
A golf club shaft has a braid layer including first and second diagonal yarns. The diagonal yarns are positioned at the degrees of orientation (+θ, −θ) of +30° to +60° and −30° to −60° against the...
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6602148 |
Golf club shaft
A golf club shaft comprises a first section and a second section, wherein the first section is made of a fiber tow of composite material and formed a tube by filament winding method. The second...
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6540623 |
Composite shaft for a golf club
A lightweight composite golf club shaft and method for its manufacture. The shaft preferably includes at least two biased plies extending approximately the length of the shaft and at least two...
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6524195 |
Tubular body
A tubular body comprises: rolled layers of prepreg formed of reinforcing fibers impregnated with synthetic resin, wherein a ratio of impregnation of synthetic resin contained in a skew fiber body...
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6514156 |
Tube and golf club with handle made of said tube
The tube (6) comprises a wall which is composed of a plurality of layers (2; 3; 5; 4). Longitudinally extending wires (3) are provided in the wall. At least one layer (2, 4) which is wound over the...
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6491778 |
Bent tip composite golf shaft
A method of making a golf club shaft with a bent angular tip using a main shaft body mandrel and a secondary tip mandrel disposed at an angle therewith and a mandrel apparatus for the same.
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6485376 |
Golf club shaft
A golf club shaft includes an inner layer, an intermediate layer placed on the inner layer, and an outer layer placed on the intermediate layer. The intermediate layer has inclined yarns, which are...
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6478689 |
Golf club and set of golf clubs
A golf club includes a shaft, a head attached to the tip end of the shaft, and a grip attached at the butt end of the shaft. The 14-inch balance is D0 or more. The club has initial velocity per...
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6454662 |
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....
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6413343 |
Method for manufacturing hybrid golf club shafts
An improved shaft for a golf club and methods of manufacturing the same. A plurality of layers of composite fiber bound within a thermoset resin are bonded to one or more layers of composite fiber...
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6354960 |
Golf club shaft with controllable feel and balance using combination of fiber reinforced plastics and metal-coated fiber-reinforced plastics
A golf club shaft is formed with an elongated body using a combination of fiber-reinforced plastics and metal-coated fibers to obtain the optimally characterized golf club for a particular player....
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