Golf club

Games using tangible projectile – Golf – Club or club support

Reexamination Certificate

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C473S345000, C473S349000

Reexamination Certificate

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11482117

ABSTRACT:
In a driver golf head (1) comprising a face (4) having a hitting surface, a sole (3) forming a lower portion, and a crown (5) forming an upper portion, the sole (3) is improved. The sole (3) in the position close to the face (4) was formed into an elastically deformable recess-projection shape, and part of the face (4) was formed into a projecting shape and integrated with the sole (3) to increase rigidity. Using a configuration with increased rigidity and decreased rigidity between the face (4) and sole to obtain an elastically deformable portion and providing a high-rigidity body (12) increased the repulsion force in the lower portion of the face and extended the traveling distance of the golf ball.

REFERENCES:
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patent: 5205560 (1993-04-01), Hoshi et al.
patent: 5213328 (1993-05-01), Long et al.
patent: 6319149 (2001-11-01), Lee
patent: 6348013 (2002-02-01), Kosmatka
patent: 6506129 (2003-01-01), Chen
patent: 6524198 (2003-02-01), Takeda
patent: 6602149 (2003-08-01), Jacobson
patent: 6695715 (2004-02-01), Chikaraishi
patent: 6887165 (2005-05-01), Tsurumaki
patent: 2004/0121852 (2004-06-01), Tsurumaki
Patent Abstracts of Japan, Publication No. 2000-176056, dated Jun. 27, 2000.
Patent Abstracts of Japan, Publication No. 2001-054596, dated Feb. 27, 2001.
Patent Abstracts of Japan, Publication No. 2002-017912, dated Jan. 22, 2002.

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