Golf club

Details Golf club Golf club

2011-07-05

2011-07-05

Blau, Stephen L. (Department: 3711)

Games using tangible projectile

Golf

Club or club support

C473S323000

Reexamination Certificate

active

07972223

ABSTRACT:
A graphite golf club which is formed on a mandrel is provided. The graphite golf club comprises a club head which strikes a golf ball; a club shaft which comprises a coupling unit to be coupled with the club head and a main body unit extending from the coupling unit to a golf club grip. The mandrel includes a mandrel joint unit which is formed with mandrel steps that decrease in diameter from one end of the mandrel to the other end of the mandrel. The golf club shaft is formed on the mandrel with a lower sheet layer contacting and overlapping the mandrel and an upper sheet layer overlapping an outer part of the lower sheet layer. The lower sheet layer and the upper sheet layer form a sheet joint unit which includes sheet steps decreasing in diameter corresponding to the mandrel steps.

REFERENCES:
patent: 4319750 (1982-03-01), Roy
patent: 4555112 (1985-11-01), Masghati
patent: 5035764 (1991-07-01), Blake
patent: 5692971 (1997-12-01), Williams
patent: 2003/0114241 (2003-06-01), Oldenburg
patent: 2003/0125125 (2003-07-01), Oyama
patent: 07-308411 (1995-11-01), None
patent: 2001-224719 (2001-08-01), None
patent: 10-393731 (2001-04-01), None

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