Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
Hollow golf club head
A hollow golf club head allowing to increase the repulsion and the degree of design freedom, while maintaining the durability. A hollow golf club head having a head body formed from a metal, wherein a hole is formed in the vicinity of the middle of a crown portion in the head body, the hole is closed with a cover member made of a material different from the head body, and the ratio (ρm/ρf) of the specific gravity ρm of the head body and the specific gravity ρf of the cover member is set equal or superior to 1.3.
The Yokohama Rubber Co., Ltd.
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Yoh Tomoaki Norihiko Shinji
Nishizawa Mori Nakahara Yamamoto