GOLF CLUB HEAD

• US 20150094163A1
• Filed: 09/29/2014
• Published: 04/02/2015
• Est. Priority Date: 09/30/2013
• Status: Active Grant

• Current Assignee: Sumitomo Rubber Industries Limited
• Original Assignee: Dunlop Sports Co. Ltd. (Sumitomo Rubber Industries Limited)
• Inventors: MOTOKAWA, Yuki
• Granted Patent: US 9,616,300 B2
• Time in Patent Office: Days
• US Class Current: 473/329
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0466 wood-type
• CPC Class Codes: A63B 53/06 adjustable

Abstract

A hollow golf club head comprises a face portion having a club face for hitting a ball, and a club face'"'"'s perimeter region extending backwards from the face portion. The perimeter region is provided with at least one set of a front part extending backwards from the face portion to have a free rear end, and a rear part extending forwards to have a free front end. The front part and the rear part are overlapped with each other without being fixed to each other so that, relatively to the rear part, the front part is movable in the front-back direction of the club head when hitting a ball.

Claims

1. A golf club head with a hollow therein comprising

a face portion having a club face for hitting a ball, and

a club face'"'"'s perimeter region extending backwardly of the club head from the face portion,

the club face'"'"'s perimeter region provided with at least one set of a front part extending backwards from the face portion to have a free rear end in the back thereof, and a rear part extending forwards to have a free front end in the front thereof, wherein

the front part and the rear part are overlapped with each other without being fixed to each other so that, relatively to the rear part, the front part is movable in the front-back direction of the club head when hitting a ball.

2. The golf club head according to claim 1, wherein

the club head comprises a first head member having an opening, and a second head member closing the opening,

the free rear end of said front part is formed by a part of an edge of the first head member surrounding the opening, and

the free front end of said rear part is formed by a front edge of the second head member.

3. The golf club head according to claim 2, wherein

the first head member comprises a sole portion forming a bottom surface of the club head,

said opening is formed in the sole portion, and

said front part is formed by a part of the sole portion between the face portion and the opening.

4. The golf club head according to claim 2, wherein

the perimeter of the second head member excepting the free front end is fixed to the first head member.

5. The golf club head according to claim 1, wherein

the rear part comprises a front section overlapping the front part and a rear section extending backwards from the front section, and the rear part extends without covering the outside of the free rear end of the front part.

6. The golf club head according to claim 5, wherein

the rear part is bent towards the hollow so that the front section thereof is positioned on the inside of the front part.

7. The golf club head according to claim 2, wherein

the first head member is cup-shaped and comprises the face portion and a turnback extending backwardly of the club head to form said club face'"'"'s perimeter region,

the free rear end is formed by at least a part of the rear edge of the turnback,

the second head member is cup-shaped, and

said hollow of the golf club head is formed by an open cavity of the second head member and an open cavity of the first head member.

8. The golf club head according to claim 7, wherein

the turnback include a sole-side turnback provided with said free rear end.

9. The golf club head according to claim 1, wherein

in a vertical cross section of the club head under its standard state passing through the center of gravity of the club head and being parallel to the front-back direction of the club head, the front part and the rear part have contact surfaces which are a circular arc whose center is positioned in the vicinity of the corner between the face portion and a crown portion of the club head.

10. The golf club head according to claim 5, wherein

a concave portion is formed behind the free rear end of the front part and on the outside of the rear part, and

an elastic material is disposed in the concave portion.