IP Library Granted Patent US 8,216,085
Granted Patent B2
US 8,216,085 · App. 12/393,764 · Granted Jul 10, 2012

Golf club

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Quick Facts
Patent No.
US 8,216,085
App. No.
12/393,764
Granted
Jul 10, 2012
Kind
B2
Abstract

A golf club 2 includes a shaft 6 , a tip member provided at a tip part of the shaft 6 , and a rear end member attached to a rear end part of the shaft 6 . The tip member includes a head 4 . The rear end member includes a grip 8 and a weight member 20 . The golf club has a club length of 1143 mm or more. A value of [W2/W1] is no less than 0.23 and no more than 0.32 when a weight of the tip member is W1 (g) and a weight of the rear end member is W2 (g). The weight member 20 is provided on a rear side relative to a tip position of the grip. The weight member 20 has a specific gravity larger than that of the shaft 6 . The golf club 2 is a wood type golf club. Examples of materials for the weight member 20 include brass, a tungsten nickel alloy, an aluminum alloy, a tungsten alloy, a stainless alloy, stainless steel, and the like.

Claims (18)

1. A golf club comprising:

a shaft;

a tip member provided at a tip part of the shaft, wherein the tip member includes a golf club head;

a rear end member attached to a rear end part of the shaft, wherein the rear end member includes a grip;

a weight adjusting material provided in or on the head; and

a ferrule, an adhesive and a double-faced tape; wherein

the head and the shaft are bonded by the adhesive,

the shaft and the grip are bonded by the double-faced tape,

a weight Ws of the shaft is no less than 30 g and no more than 50 g;

the rear end member includes a weight member, the weight member is provided on a rear side relative to a tip position of the grip, and the weight member has a specific gravity larger than that of the grip;

the golf club has a club length of 1143 mm or more; and a value of [W2/W1] is no less than 0.26 and no more than 0.32 when a weight of the tip member is W1 (g) and a weight of the rear end member is W2 (g);

the weight W1 includes a weight of the weight adjusting material, a weight of the adhesive and a weight of the ferrule;

the weight W2 includes a weight of the double-faced tape;

a weight Ww of the weight member is no less than 10 (g) and no more than 25 (g); and

the weight W2 of the rear end member is no less than 30 (g) and no more than 55 (g); and

a value is no less than 0.26 when a weight of the grip is Wg.

2. The golf club according to claim 1 , wherein the weight W1 of the tip member is no less than 160 (g) and no more than 195 (g).

3. The golf club according to claim 1 , wherein the weight Wg of the grip is no less than 25 (g) and no more than 45 (g).

Assignments (3)
MERGER Recorded Apr 17, 2018
From: DUNLOP SPORTS CO. LTD.
To: SUMITOMO RUBBER INDUSTRIES, LTD.
Reel/Frame 045959/0204 →
CHANGE OF NAME Recorded Apr 12, 2018
From: SRI SPORTS LIMITED
To: DUNLOP SPORTS CO. LTD.
Reel/Frame 045932/0024 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 4, 2009
From: FUJIMOTO, HIROAKI
To: SRI SPORTS LIMITED
Reel/Frame 022342/0548 →