Hollow golf club head

Details Hollow golf club head Hollow golf club head

2007-04-17

2007-04-17

Passaniti, Sebastiano (Department: 3711)

Games using tangible projectile

Golf

Club or club support

C473S345000, C473S349000

Reexamination Certificate

active

11203100

ABSTRACT:
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, 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, and the ratio of the face area of a portion where the reinforcement and the head body are combined to the face area of the head body is set equal or superior to 20%.

REFERENCES:
patent: 4021047 (1977-05-01), Mader
patent: 4667963 (1987-05-01), Yoneyama
patent: 4798383 (1989-01-01), Nagasaki et al.
patent: 4874171 (1989-10-01), Ezaki et al.
patent: 5000454 (1991-03-01), Soda
patent: 5303922 (1994-04-01), Lo
patent: 5328176 (1994-07-01), Lo
patent: 5499814 (1996-03-01), Lu
patent: 5586944 (1996-12-01), Nagamoto et al.
patent: 5624331 (1997-04-01), Lo et al.
patent: 5643103 (1997-07-01), Aizawa
patent: 5658207 (1997-08-01), Aizawa et al.
patent: 5669827 (1997-09-01), Nagamoto
patent: 5766089 (1998-06-01), Dekura
patent: 5830084 (1998-11-01), Kosmatka
patent: 6193614 (2001-02-01), Sasamoto et al.
patent: 6334817 (2002-01-01), Ezawa et al.
patent: 6344817 (2002-02-01), Verzulli
patent: 6575845 (2003-06-01), Galloway et al.
patent: 2003/0032500 (2003-02-01), Nakahara et al.
patent: 2003/0083151 (2003-05-01), Nakahara et al.
patent: 2003/0125127 (2003-07-01), Nakahara
patent: 2003/0134693 (2003-07-01), Nakahara et al.
patent: 2004/0116207 (2004-06-01), Shiell et al.
patent: 2004/0116208 (2004-06-01), Shiell et al.

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