Golf club

Details Golf club Golf club

2006-07-04

2006-07-04

Blau, Stephen (Department: 3711)

Games using tangible projectile

Golf

Club or club support

C473S345000

Reexamination Certificate

active

07070512

ABSTRACT:
A golf club comprises a club shaft and a hollow club head, wherein the club head has a loft angle of from 14 to 18 degrees, a head volume of not less than 250 cc, and a sweet spot at a vertical distance of from 1 to 5 mm downwards of a face center, and the club shaft has a variable flexural rigidity whose minimum is in a range of from 5 to 10 N·m2, and the minimum flexural rigidity occurs in a range between 0% and 40% of the length of the club shaft from the end of the club shaft.

REFERENCES:
patent: 5439219 (1995-08-01), Vincent
patent: 5916038 (1999-06-01), Uchiyama et al.
patent: 6254494 (2001-07-01), Hasebe et al.
patent: 10-216272 (1998-08-01), None
patent: 11-9732 (1999-01-01), None

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