IP Library Granted Patent US 9,492,720
Granted Patent B2
US 9,492,720 · App. 14/142,374 · Granted Nov 15, 2016

Golf club head

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Quick Facts
Patent No.
US 9,492,720
App. No.
14/142,374
Granted
Nov 15, 2016
Kind
B2
Abstract

A golf club head includes a striking face having a face center, a bottom portion, a top portion including an exterior surface, a hosel including an imaginary vertical hosel plane, a forwardmost point, and a rearwardmost point. In an imaginary vertical plane perpendicular to the hosel plane and passing through the face center, the exterior surface includes a path having a first point and a second point rearward of the first point. An imaginary infinite straight line passes through the first point and the second point, but does not penetrate the exterior surface. A segment of the imaginary straight line is delimited by the first point and the second point. A maximum distance between the segment and the exterior surface of the top portion is no greater than 0.70 mm and a distance between the first point and the second point is no less than 22 mm.

Claims (52)

1. A wood-type golf club head comprising:

a striking face including a face center and a center apex;

a bottom portion and a top portion opposite the bottom portion, the top portion including an exterior surface;

a hosel including an imaginary centerline and an imaginary vertical hosel plane containing the imaginary centerline;

a forwardmost point and a rearwardmost point opposite the forwardmost point; and

a volume no less than 250 cc,

wherein the golf club head is in a reference position;

wherein, in an imaginary vertical plane perpendicular to the imaginary vertical hosel plane:

the exterior surface of the top portion includes a continuous straight segment bounded by a first endpoint and a second endpoint rearward of the first endpoint; and

an imaginary infinite straight line is collinear with the segment, but does not penetrate the exterior surface of the top portion; and

wherein a distance D 4 is defined between the first endpoint and the center apex, the golf club head has an overall length L o , and a ratio of the distance D 4 to the overall length L o is no less than 0.35.

2. The golf club head of claim 1 , wherein a distance between the first endpoint and the second endpoint is no less than 4 mm.

3. The golf club head of claim 2 , wherein the distance between the first endpoint and the second endpoint is no less than 8 mm.

4. The golf club head of claim 1 , wherein the volume is no less than 320 cc.

5. The golf club head of claim 1 , wherein the rearwardmost point comprises a height, H rear , and the exterior surface comprises a maximum height, H max , and further wherein a ratio H rear /H max is no greater than 0.50.

6. The golf club head of claim 5 , wherein H rear /H max is no greater than 0.40.

7. The golf club head of claim 6 , wherein H rear /H max is no greater than 0.25.

8. The golf club head of claim 1 , further comprising an overall width, W o , wherein the imaginary vertical plane is spaced from the face center by a lateral distance no greater than 0.25 W o .

9. The golf club head of claim 1 , wherein the imaginary vertical plane passes through the face center.

10. The golf club head of claim 9 , wherein a distance between the second endpoint and the rearwardmost point is no greater than 45 mm.

11. The golf club head of claim 10 , wherein the distance between the second endpoint and the rearwardmost point is no greater than 25 mm.

12. A wood-type golf club head comprising:

a striking face including a face center and a center apex;

a bottom portion and a top portion opposite the bottom portion, the top portion including an exterior surface;

a hosel including an imaginary centerline and an imaginary vertical hosel plane containing the imaginary centerline;

a forwardmost point and a rearwardmost point opposite the forwardmost point; and

a volume no less than 150 cc,

wherein the golf club head is in a reference position;

wherein, in an imaginary vertical plane perpendicular to the imaginary vertical hosel plane:

the exterior surface of the top portion includes a continuous straight segment bounded by a first endpoint and a second endpoint rearward of the first endpoint; and

an imaginary infinite straight line is collinear with the segment, but does not penetrate the exterior surface of the top portion;

wherein a distance D 4 is defined between the first endpoint and the center apex, the golf club head has an overall length L o , and a ratio of the distance D 4 to the overall length L o is no less than 0.35; and

wherein the rearwardmost point comprises a height, H rear , and the exterior surface comprises a maximum height, H max , such that a ratio H rear /H max is no greater than 0.50.

13. The golf club head of claim 12 , wherein H rear /H max is no greater than 0.40.

14. The golf club head of claim 13 , wherein H rear /H max is no greater than 0.25.

15. The golf club head of claim 12 , wherein the imaginary vertical plane passes through the face center.

16. A wood-type golf club head comprising:

a striking face including a face center and a center apex;

a bottom portion and a top portion opposite the bottom portion, the top portion including an exterior surface;

a hosel including an imaginary centerline and an imaginary vertical hosel plane containing the imaginary centerline;

a forwardmost point and a rearwardmost point opposite the forwardmost point;

a volume no less than 150 cc; and

an overall width, W o ,

wherein the golf club head is in a reference position;

wherein, in an imaginary vertical plane perpendicular to the imaginary vertical hosel plane and spaced from the face center by a lateral distance no greater than 0.25 W o :

the exterior surface of the top portion includes a continuous straight segment bounded by a first endpoint and a second endpoint rearward of the first endpoint; and

an imaginary infinite straight line is collinear with the segment, but does not penetrate the exterior surface of the top portion; and

wherein a distance D 4 is defined between the first endpoint and the center apex, the golf club head has an overall length L o , and a ratio of the distance D 4 to the overall length L o is no less than 0.35.

17. The golf club head of claim 16 , wherein the volume is no less than 250 CC.

18. The golf club head of claim 16 , wherein a distance between the first endpoint and the second endpoint is no less than 4 mm.

19. The golf club head of claim 18 , wherein the distance between the first endpoint and the second endpoint is no less than 8 mm.

20. The golf club head of claim 16 , wherein a distance between the second endpoint and the rearwardmost point is no greater than 45 mm.

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 →