| US 7,540,812 B2 | ||
| Golf club head | ||
| Yasunori Imamoto, Tokyo (Japan); and Hisashi Yamagishi, Tokyo (Japan) | ||
| Assigned to Sidel Participations, Octeville Sur Mer (France) | ||
| Filed on Aug. 13, 2007, as Appl. No. 11/837,642. | ||
| Application 11/837642 is a continuation of application No. 10/868364, filed on Jun. 16, 2004, granted, now 7,318,782. | ||
| Claims priority of application No. P2003-173668 (JP), filed on Jun. 18, 2003; and application No. P2004-104904 (JP), filed on Mar. 31, 2004. | ||
| Prior Publication US 2007/0293350 A1, Dec. 20, 2007 | ||
| Int. Cl. A63B 53/04 (2006.01) | ||
| U.S. Cl. 473—345 [473/347; 473/349] | 28 Claims |
| 1. A golf club head of a hollow shell structure, comprising:
a first member that includes a metal material and includes a face portion and an edge portion continuous with the face portion;
a metal plate that is a different member from the first member, extends in a direction, which is different from a toe-heel
direction of the golf club head, and includes at least a part of sole portion;
a metal crown portion having a center edge portion, a toe side edge portion, and a heel side edge portion, the center edge
portion having an almost straight shape in the toe-heel direction; and
a second member formed of a fiber reinforced resin, wherein:
the first member and the metal plate are apart from each other;
the second member joins the first member with the metal plate;
the metal plate is made of a metal material, which is larger in specific gravity than the metal material of the first member;
and
a width of the metal crown portion corresponding to the toe side edge portion and the heel side edge portion in face-back
direction become larger as a position on the metal crown portion gets farther from the center edge portion.
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