Golf club head

Details Golf club head Golf club head

2006-08-29

2006-08-29

Kim, Eugene (Department: 3711)

Games using tangible projectile

Golf

Club or club support

C473S345000

Reexamination Certificate

active

07097572

ABSTRACT:
A hollow metal club head comprises a face portion whose front surface defines the club face, and a turnback wall extending backward from the circumferential edge of the face portion, wherein a head volume is in a range of not less than 440 cc, a height of the club face is in a range of from 55 to 85 mm, and a surface area of the club face is in a range of from 4000 to 6500 sq. mm. In a front end zone of the turnback wall and a peripheral zone of the face portion which are adjacent to each other through a junction between the turnback wall and the face portion, the ratio Rf/Rh of a zone rigidity Rf=(Ef×tf3) of the peripheral zone to a zone rigidity Rh=(Eh×th3) of the front end zone is in a range of from 4.0 to 12.0.

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patent: 6524194 (2003-02-01), McCabe
patent: 6533681 (2003-03-01), Inoue et al.
patent: 6852038 (2005-02-01), Yabu
patent: 2003/0104878 (2003-06-01), Yabu
patent: 2000144286 (2000-05-01), None
patent: 2003159354 (2003-06-01), None

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