IP Library Granted Patent US 7,326,125
Granted Patent B2
US 7,326,125 · App. 11/287,395 · Granted Feb 5, 2008

Golf club

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Quick Facts
Patent No.
US 7,326,125
App. No.
11/287,395
Granted
Feb 5, 2008
Kind
B2
Abstract

A golf club comprises a club shaft having a tip end and a butt end, a golf 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 extending from the butt end toward the tip end of the club shaft, the golf grip having an upper end by the side of the butt end of said club shaft, wherein the golf club has a club entire length in the range of from 46 to 48 inch, the golf club has a swing weight of from C 5 to D 0 based on 14-inch balance method, and the golf club has a moment of inertia in the range of from 2850 to 3000 kg·cm 2 at the position of the upper end of the golf grip.

Claims (30)

1. A golf club comprising

a club shaft having a tip end and a butt end,

a golf club head being attached to the tip end of said club shaft, and

a golf grip being attached to a region of the club shaft extending from the butt end toward the tip end of the club shaft, the golf grip having an upper end by the side of the butt end of the club shaft, wherein

the golf club has a club entire length in the range of from 46 to 48 inch,

the golf club has a swing weight of from C 5 to D 0 based on 14-inch balance method, and

the golf club has a moment of inertia in the range of from 2850 to 3000 kg·cm 2 at the position of the upper end of said golf grip.

2. The golf club according to claim 1 , wherein

the golf club has a entire weight in the range of from 285 to 300 g.

3. The golf club according to claim 1 , wherein

the golf club has the moment of inertia in the range of from 2930 to 2980 kg·cm 2 at the position of the upper end of the golf grip.

4. The golf club according to claim 1 , wherein

the golf club has the swing weight of from C 6 to C 9 .

5. The golf club according to claim 1 , wherein

the golf club head has a club head weight in the range of from 180 to 195 g.

6. The golf club according to claim 1 , wherein

the club shaft is provided with a weight member for adjusting the swing weight at the side of the butt end, and

the weight member has a weight in the range of from 2 to 9% the weight of the golf club head.

7. The golf club according to claim 6 , wherein

the club shaft has a tubular body having a hollow therein, and

the weight member comprises

a base portion inserted into the hollow portion of the club shaft from the butt end thereof and

a flange portion covering the butt end of the club shaft and sandwiched between the butt end of the club shaft and a bottom of the golf grip.

8. The golf club according to claim 1 , wherein

the golf grip is provided with a weight member for adjusting the swing weight at the side of the upper end, and

the weight member has a weight in the range of from 2 to 9% the weight of said golf club head.

9. The golf club according to claim 8 , wherein

the club shaft has a tubular body having an opening at the butt end,

the golf grip has a vent hole extending from the opening of the butt end of the club shaft to outside of the grip, and

the weight member has an annular body extending around the vent hole.

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 Nov 28, 2005
From: MORIYAMA, KEIJI
To: SRI SPORTS LIMITED
Reel/Frame 017289/0622 →