Golf club head

• US 20080161127A1
• Filed: 11/06/2007
• Published: 07/03/2008
• Est. Priority Date: 12/27/2006
• Status: Active Grant

• Current Assignee: Sumitomo Rubber Industries Limited
• Original Assignee: SRI Sports Limited (Sumitomo Rubber Industries Limited)
• Inventors: Yamamoto, Akio
• Granted Patent: US 7,682,263 B2
• Time in Patent Office: Days
• US Class Current: 473/350
• CPC Class Codes: A63B 2053/0491 with added weights, e.g. changeable, replaceable
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/0408 characterised by specific dimensions, e.g. thickness
• CPC Class Codes: A63B 53/0462 characterised by tapering thickness of the impact face plate
• CPC Class Codes: A63B 53/0466 wood-type
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like
• CPC Class Codes: A63B 60/02 Ballast means for adjusting the centre of mass A63B60/24, A63B60/54 take precedence

Abstract

A golf club head has a hollow structure comprising: a club face having a toe-side extreme end and a heel-side extreme end between which a club face maximum width Wf is defined; and a rear part being rear of the club face and having a toe-side extreme end and a heel-side extreme end (excepting a hosel portion) between which a head maximum width Wh is defined. The ratio (Wh/Wf) of the head maximum width Wh to the club face maximum width Wf is more than 1.0, but not more than 1.5. The distance of the toe-side extreme end of the rear part and the distance of the heel-side extreme end of the rear part are not more than 0.2 times the distance of a front-side extreme end of the head, each distance measured in the back-and-forth direction of the head from a rear-side extreme end of the head. Therefore, the weight is distributed toward the toe, heel and rear of the head, and the depth of the center of gravity and the moment of inertia can be increased.

Claims

1. A golf club head having a hollow structure comprising:

a club face having a toe-side extreme end and a heel-side extreme end between which a club face maximum width Wf is defined; and

a rear part being rear of the club face and having a toe-side extreme end and a heel-side extreme end between which a head maximum width Wh is defined, wherein

the ratio (Wh/Wf) of the head maximum width Wh to the club face maximum width Wf is more than 1.0, but not more than 1.5,

said toe-side extreme end of the club face is located on the heel-side of the toe-side extreme end of the rear part, and said heel-side extreme end of the club face is located on the toe-side of the heel-side extreme end of the rear part, and

a distance of the toe-side extreme end of the rear part and a distance of the heel-side extreme end of the rear part are not more than 0.2 times a distance of a front-side extreme end of the head, each distance measured in the back-and-forth direction of the head from a rear-side extreme end of the head.

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

said hollow structure has a substantially trapezoidal shape when viewed from above the head, and the width of said shape in the heel-and toe direction is gradually increased from the club face toward the rear-side extreme end of the head.

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

said width is gradually increased to the toe-side extreme end and heel-side extreme end of the rear part, and then gradually decreased to the rear-side extreme end.

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

said width is gradually increased to the toe-side extreme end and heel-side extreme end of the rear part, which extreme ends each have a certain extent in the back-and-forth direction.

5. The golf club head according to claim 1, which further comprises a weighting member disposed near the toe-side extreme end of the rear part.

6. The golf club head according to claim 1, which further comprises a weighting member disposed near the heel-side extreme end of the rear part.

7. The golf club head according to claim 2, which further comprises a weighting member disposed near the toe-side extreme end of the rear part.

8. The golf club head according to claim 2, which further comprises a weighting member disposed near the heel-side extreme end of the rear part.