Golf club set

Details Golf club set Golf club set

2008-12-30

2011-12-06

Blau, Stephen L. (Department: 3711)

Games using tangible projectile

Golf

Club or club support

C473S314000, C473S345000

Reexamination Certificate

active

08070621

ABSTRACT:
Set2according to the present invention includes m or more wood type golf clubs (wherein, m is an integer of no less than 2) having a loft angle of greater than 20 degrees. Provided that the face progression b2of these m clubs is defined as from b2(1) to b2(m) following the ascending order of the loft angle of the club from the smallest value, this set 2 satisfies the relationships of:in-line-formulae description="In-line Formulae" end="lead"?b2 (1) ≧b2 (2) ≧ . . . ≧b2 (m); andb2 (1) >b2 (m).in-line-formulae description="In-line Formulae" end="tail"?Preferably, in all clubs having a loft angle of greater than 20 degrees, the ratio (a2/b2) of the loft angle a2(degree) to the face progression (mm) is 0.7 or greater and 2.0 or less in this set2. This set2is superior in ease to address. According to this set2, the trajectory suited for each numerical designation can be achieved.

REFERENCES:
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patent: 6032999 (2000-03-01), York et al.
patent: 6315678 (2001-11-01), Teramoto
patent: 6623374 (2003-09-01), Helmstetter et al.
patent: 2001/0041625 (2001-11-01), Satoh et al.
patent: 7-328149 (1995-12-01), None
patent: 2000-93560 (2000-04-01), None
patent: 2003-135628 (2003-05-01), None

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