Golf club shaft

Details Golf club shaft Golf club shaft

2005-03-08

2005-03-08

Blau, Stephen (Department: 3711)

Games using tangible projectile

Golf

Club or club support

C473S321000

Reexamination Certificate

active

06863623

ABSTRACT:
A golf club shaft formed by winding prepregs of an angular layer and those of a straight layer around a mandrel (10) having a steeply tapered part (10B) formed at a tip side thereof and a gently tapered part (10C) formed, at a butt side thereof, continuously with the steeply tapered part (10B). Prepregs (17, 18) of the angular layer are disposed at the tip side of the mandrel (10). Butt-side ends (17a,18a) of the prepregs (17, 18) of the angular reinforcing layer at the tip side of the mandrel (10) are disposed at the butt side of the mandrel (10) with respect to a boundary position (P2) disposed at a boundary between the steeply tapered part (10B) and the gently tapered part (10C). A distance from the butt-side ends (17a,18a) of the prepregs (17, 18) of the angular reinforcing layer at the tip side of the mandrel (10) to the boundary position (P2) is not less than 5% nor more than 30% of a whole length of the shaft.

REFERENCES:
patent: 5776008 (1998-07-01), Lundberg
patent: 20030114241 (2003-06-01), Oldenburg
patent: 2-98375 (1990-04-01), None
patent: 08-224809 (1996-09-01), None
patent: 2001-062015 (2001-03-01), None

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