Golf club head

• US 10,286,265 B2
• Filed: 03/05/2018
• Issued: 05/14/2019
• Est. Priority Date: 03/06/2017
• Status: Active Grant

• Current Assignee: Sumitomo Rubber Industries Limited
• Original Assignee: Sumitomo Rubber Industries Limited
• Inventors: Tsunashima, Hiromasa, Mizutani, Naruhiro, Hasegawa, Hiroshi, Onuki, Masahide
• Primary Examiner(s): Hunter, Alvin A
• Application Number:
  US15/912,002
• Publication Number:
  US 20180250559A1
• Time in Patent Office: 435 Days
• Field of Search: 473324-350
• CPC Class Codes: A63B 53/0408 characterised by specific dimensions, e.g. thickness
• CPC Class Codes: A63B 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0437 with special crown configurations
• CPC Class Codes: A63B 53/0466 wood-type
• CPC Class Codes: A63B 60/52 with slits

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.

Claims

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.

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.

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.

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.