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Class 473/289 - Particular correlated shaft flexural characteristic


Subclass of Class 473 - Games using tangible projectile
Definition: Subject matter wherein said two instruments or two elements
No. of patents: 102
Last issue date: 03/06/2012


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NumberTitleIssue Date
8128508Shaft 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 change Δ1 in bending stiffness in a section from 600 mm to 800 mm...
03/06/2012
7758446Golf club shaft tuner
A moveable shaft insert assembly about 13 to 18 inches long weighing less than 50 grams is inserted into a hollow golf dub shaft wherein the depth of insertion of the shaft insert assembly may vary from about 1 to 10 inches. Changing the location of the shaft insert...
07/20/2010
7758445Method 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 taper profile, producing a core (30) of angle-fib...
07/20/2010
7415867Golf shaft and club flex neutralization/matching and method for manufacturing same
In accordance with the present invention, this method encompasses a shaft with a neutral flex point mark and identification mark/sticker of quantitative characteristics that has been achieved by deflecting a shaft, at its tip, a specific distance while resting in a ...
08/26/2008
7354354Article comprising a fine-grained metallic material and a polymeric material
Lightweight articles comprising a polymeric material at least partially coated with a fine-grained metallic material are disclosed. The fine-grained metallic material has an average grain size of 2 nm to 5,000 nm, a thickness between 25 micron and 5 cm, and a hardne...
04/08/2008
7314067Design and manufacturing method for multi-material tube structures
The present invention provides an improved tubular structure which uses the properties of different materials, such as stiffness, strength, and density are exploited in a manner which combines the most attractive characteristics of existing metal and composite tubes...
01/01/2008
7300358Multiple flex shaft system for golf clubs
The present invention relates to methods for optimizing the flexibility of each shaft comprised in a set of golf clubs. In general, based on a golfer's estimated swing speed, skill level and/or other relevant factors, an appropriate category of golf club shafts is s...
11/27/2007
7300357Practice sport projectile having a through hole
Non-standard sport projectiles, in accordance with this invention, include at least one linear through hole. As this non-standard sport projectile passes through the air, after being hit by, for example, a golf club, the non-standard sport projectile spins. When the...
11/27/2007
7273427Method and system for selecting a golf club
A method for selecting a golf club suitable for a golfer includes the steps of (a) obtaining at least one of head speed and hit-ball data (initial velocity, launch angle, backspin, side spin, and travel distance) when a golfer hits a golf ball with a golf club; (b) ...
09/25/2007
7255653Metal wood club
A golf club having a metal wood club head including a toe, a heel, a club face, a sole, a rear profile, and a top profile shape. The club head is shaped to increase the moment of inertia of the club head. In one embodiment, a rear portion of the club head is truncat...
08/14/2007
7255652Lightweight, 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
7226235Joint for joining two coaxial shafts
A joint, usable as a component of a golf club, including an outer sleeve having a proximal end, a distal end, an outer surface and an inner surface; an inner sleeve having a proximal end, an outer surface in circumscribing contact with the inner surface of the outer...
06/05/2007
7207354Design and manufacturing method for multi-material tube structures
The present invention provides an improved tubular structure which uses the properties of different materials, such as stiffness, strength, and density are exploited in a manner which combines the most attractive characteristics of existing metal and composite tubes...
04/24/2007
7169056Golf 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 being measured by vibrating a tip portion of a golf club shaft constituti...
01/30/2007
7166035Systems and methods for fitting golf equipment
A golf equipment fitting system that uses advanced technology to not only objectively identify the optimum equipment for the golfer, but to also identify and help correct swing flaws so that the golfer can achieve optimum performance on the golf course. Thus, in one...
01/23/2007
7156749Golf 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 being measured by vibrating a tip portion of a golf club shaft constituti...
01/02/2007
7150684Golf 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 per unit time, the frequency being measured by vibrating a tip portion of a golf club sh...
12/19/2006
7144330Offset golf club set and method for fabrication
A set of golf clubs is provided with shafts that have a bend formed by three shaft segments. The second shaft segment connects the first and third shaft segments and offsets the third shaft segment from the first shaft segment, wherein the third shaft segment is on ...
12/05/2006
7115045Hybrid gold club shaft set
A hybrid golf club shaft set is provided that includes at least two of the group including a composite shaft subset including shafts formed entirely of composite, a composite/metal shaft subset including shafts formed of composite/metal combination shafts, and a met...
10/03/2006
7056225Method of making a single flex matched set of golf clubs
A golf club matching method in which the ideal shaft stiffness for a particular golfer is first empirically determined using calibrated test clubs. The shafts are incrementally trimmed to result in a set in which each club has the same or ideal shaft frequency or st...
06/06/2006
7048645Golf club shaft
A golf club shaft whose outer diameter is set to 9.5 to 12 mm in at least one portion of a range from a tip thereof to a position located at 25% of the distance from the tip to its butt. The minimum value of a flexural rigidity (EI) is set to 1.00 to 2.50 kg·m...
05/23/2006
7041014Method for matching a golfer with a particular golf club style
A method is disclosed for matching a test golfer with a particular golf club selected from a group of golf clubs having a plurality of styles. The method utilizes data set derived in an initial procedure in which the club style preferences for each of a large number...
05/09/2006
7024953Apparatus and method for tuning a golf shaft
A method of making a golf club includes making a first determination of the location of the effective seam in a shaft and then more precisely locating the seam before attaching a golf club head with the face of the club head facing in a neutral direction. ...
04/11/2006
6984179Golf 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
6968747Dynamic balance-testing method for a golf club shaft
A dynamic balance-testing method for a golf club shaft in accordance with the present invention comprises steps of: fixing a first end of a golf club shaft; measuring reacting forces of a constant displacement of a second end of the golf club shaft in a plurality of...
11/29/2005
6929562Golf 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 than 40% nor more than 60% of the whole length of t...
08/16/2005
6926617Golf club shaft
A golf club shaft has an angular layer composed of prepregs in which a reinforcing fiber inclines to the axis of the golf club shaft; a plurality of straight layers composed of prepregs in which the reinforcing fiber is disposed substantially parallel with the axis ...
08/09/2005
6916251Golf 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 per unit time, the frequency being measured by vibrating a tip portion of a golf club sh...
07/12/2005
6908399Golf club set
A set of golf clubs wherein the club length varies between adjacent clubs in the set by at least about 0.6 inches (15.24 mm), and preferably about 0.75 inches (19 mm). Preferably, the lie angle between adjacent clubs in the set varies by greater than about 0.6 degre...
06/21/2005
6845552Method of preparing hydroformed metallic golf club shafts
Method for preparing a golf club shaft, set of shafts, or golf clubs having shafts which have been produced by a process that includes a hydroforming step. By utilizing a hydroforming prosses step, a metal or metal matrix composite golf club shaft can be formed into...
01/25/2005
6779240Golf shaft alteration technique
A method for altering a golf club shaft by removing less than five grams of metal from an interior wall surface in a flex zone. This is performed without penetrating through an exterior wall surface of the shaft. ...
08/24/2004
6729970Hybrid golf club shaft set
A hybrid golf club shaft set is provided that includes a composite shaft subset including shafts formed entirely of composite, a composite/metal shaft subset including shafts formed of composite/metal combination shafts, and a metal shaft subset including shafts for...
05/04/2004
6702692Precise fit golf club fitting system and golf shaft selection method and apparatus
A computer software controlled method of fitting a golf shaft to a golfer having steps of electronically determining the selection of a shaft by electronically testing, recording and storing a golfers reliable club head swing speeds values and face angle/...
03/09/2004
6695711Hydroformed metallic golf club shafts and method therefore
A golf club shaft, set of shafts, or golf clubs having shafts which have been produced by a process that includes a hydroforming step. By utilizing a hydroforming step, a metal or metal matrix composite golf club shaft can be formed into a variety of conf...
02/24/2004
6625848Striking implement with improved energy storage and vibration dampening properties
Striking implements that have an improved ability to store and quickly release significant energy during flexure and at the same time have significant vibration damping capability to impart a desired "feel" to the user. A shape memory alloy element is ins...
09/30/2003
6599202Golf club set
A golf club set comprises at least three golf clubs having different loft angles changing progressively from the smallest loft angle of the lowest numbered golf club to the largest loft angle of the highest numbered golf club. Each of the golf clubs compr...
07/29/2003
6572488Method and apparatus for locating and aligning golf club shaft spine
The preferred orientation, or planar oscillation plane, of a golf club shaft is located by measuring the oscillation of the shaft when a horizontal impulse is applied and from those measurements determining an orientation in which the oscillation would be...
06/03/2003
6565450Golf club set
The present invention discloses a golf club set comprising: a plurality of golf clubs from long clubs to short clubs excluding a putter; and a tapered portion formed from a butt end to a tip end of each club shaft. An outer diameter of each shaft at the b...
05/20/2003
6477899Apparatus for locating and aligning golf club shaft spine
The preferred orientation, or planar oscillation plane, of a golf club shaft is located by measuring the oscillation of the shaft when a horizontal impulse is applied and from those measurements determining an orientation in which the oscillation would be...
11/12/2002
6394909Golf club with fixed-tension shaft
A golf club having a hollow shaft whose flexibility is determined by the tension on a wire coinciding with the shaft longitudinal axis. The is attached between a fixed assembly in the handle and a fixed assembly at the shaft lower end. The upper assembly ...
05/28/2002
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