Golf club head

Patent metadata

Field	Value
Publication number	US-10286265-B2
Application number	US-201815912002-A
Country	US
Kind code	B2
Filing date	Mar 5, 2018
Priority date	Mar 6, 2017
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

A golf club head 1 having a hollow (i) therein comprises a face portion 2 having a face 2a for striking a ball, a crown portion 3 forming the head top surface, and a sole portion 4 forming a bottom of the head. One of or each of the crown portion 3 and the sole portion 4 is provided with a plurality of grooves bent in the same direction.

First claim

The invention claimed is:

1. A golf club head having a hollow therein and comprising:
a face portion having a face for striking a ball;
a crown portion forming a top surface of the head; and
a sole portion forming a bottom of the head,
wherein one of or each of the crown portion and the sole portion is provided with a plurality of grooves bent in a same direction, and
wherein said plurality of grooves are arcuate and have radii of curvature in a range from 3to 100 mm.

2. The golf club head according to claim 1 , wherein said plurality of grooves are arranged concentrically.

3. The golf club head according to claim 1 , wherein said plurality of grooves are curved convexly to the rear of the golf club head.

4. The golf club head according to claim 1 , wherein each of said plurality of grooves has a toe-side first end disposed on a face side, a heel-side second end disposed on a face side and located on a heel side of the toe-side first end, and a back side portion extending at a position on the back side of the toe-side first end and the heel-side second end.

5. The golf club head according to claim 1 , wherein said plurality of grooves are bent in polygonal lines.

6. The golf club head according to claim 1 , wherein the number of said plurality of grooves is three or more.

7. The golf club head according to claim 6 , wherein said plurality of grooves are arranged in a front-back direction of the head.

8. A golf club head having a hollow therein and comprising:
a face portion having a face for striking a ball;
a crown portion forming a top surface of the head; and
a sole portion forming a bottom of the head,
wherein one of or each of the crown portion and the sole portion is provided with a plurality of grooves bent in a same direction, and
wherein said plurality of grooves are shifted toward a toe of the head or toward a heel of the head.

9. The golf club head according to claim 1 , wherein said a claim 8 , wherein said plurality of grooves are shifted toward a heel of the head.

10. The golf club head according to claim 8 , wherein said plurality of grooves are shifted toward a toe of the head.

11. A golf club head having a hollow therein and comprising:
a face portion having a face for striking a ball;
a crown portion forming a top surface of the head; and
a sole portion forming a bottom of the head,
wherein one of or each of the crown portion and the sole portion is provided with a plurality of grooves bent in a same direction, and
wherein said plurality of grooves are arranged in a heel side of the head and also in a toe side of the head.

Assignees

• Sumitomo Rubber Ind

Inventors

• Tsunashima Hiromasa
• Mizutani Naruhiro
• Hasegawa Hiroshi
• Onuki Masahide

Classifications

• A63B2053/0408

  Human Necessities · mapped topic

• A63B2053/0437

  Human Necessities · mapped topic

• A63B53/0466 Primary

  wood-type · CPC title

• A63B60/52

  with slits · CPC title

• A63B53/0408

  characterised by specific dimensions, e.g. thickness · CPC title