IP Library Granted Patent US 9,737,769
Granted Patent B2
US 9,737,769 · App. 14/597,574 · Granted Aug 22, 2017

Golf club

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Quick Facts
Patent No.
US 9,737,769
App. No.
14/597,574
Granted
Aug 22, 2017
Kind
B2
Abstract

A golf club includes a club head having a volume of greater than about 360 cm 3 and a mass less than 200 g. A shaft attachable to the club head has a tip end, a butt end, and a shaft balance point distance, BP s , as measured from the butt end, of no more than 19 inches. And the golf club has a mass less than 300 g.

Claims (16)

1. A golf club comprising:

a club head having a volume of greater than about 360 cm3 and a mass less than 200 g;

a shaft attachable to the club head having a tip end, a butt end, and a shaft balance point distance, BPs, as measured from the butt end, of no more than 19 inches; and

a golf club mass less than 300 g;

an overall club length, Lc; and

a club balance point distance, BPc, measured from the butt end of the shaft;

wherein a ratio (BPc/Lc) is no less than 0.76.

2. The golf club of claim 1 , wherein the shaft further comprises a shaft length, Ls, no less than 44 inches.

3. The golf club of claim 1 , wherein, respective to an imaginary coordinate system having an x-axis, a y-axis, a z-axis and an origin located at a center of gravity of the club head, the club head has a moment of inertia about the z-axis of at least about 4000 g-cm2.

4. The golf club of claim 3 , wherein the MOI about the z-axis is about 4500 g-cm2.

5. The golf club of claim 1 , wherein the mass of the golf club is less than 295 g.

6. The golf club of claim 1 , wherein the mass of the golf club is between 285 g and 295 g.

7. The golf club of claim 1 , wherein the overall club length, Lc, is no less than 45 inches.

8. The golf club of claim 1 , wherein a ratio of the mass of the club head to the club balance point distance, BPc, is no greater than 8.5 grams/inch.

9. The golf club of claim 1 , wherein the mass of the club head is between 190 g and 200 g.

10. The golf club of claim 1 , further comprising a torsional displacement angle of greater than about 5.5°.

Assignments (2)
MERGER Recorded Jan 3, 2019
From: DUNLOP SPORTS CO., LTD.
To: SUMITOMO RUBBER INDUSTRIES, LTD.
Reel/Frame 048002/0320 →
CHANGE OF NAME Recorded Sep 5, 2018
From: SRI SPORTS LIMITED
To: DUNLOP SPORTS CO., LTD.
Reel/Frame 047597/0660 →