Lightweight shaft

Games using tangible projectile – Golf – Club or club support

Patent

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Details

473321, 273DIG7, 273DIG23, A63B 5310, A63B 5312

Patent

active

057438110

ABSTRACT:
A lightweight shaft 22 of generally tubular configuration, for use with a golf club 20, is formed with a first layer 34 of a non-metallic composite material of a given density including graphite fibers 86 and cured epoxy resin 86. A second layer 38 of the shaft 22 is composed of a two foam half-forms 124, or a foam full-form 142, having a density which is lower than the given density and which are located around at least a portion of the length of the first layer 34. A third layer 40 of the shaft 22 is also composed of a non-metallic composite material including graphite fibers 86 and cured epoxy resin 86 which is located around the second layer 38 of the shaft 22. A portion of the third layer 38 is also located about the first layer 34 at a tip end 30 of the shaft 22.

REFERENCES:
patent: 1169667 (1916-01-01), Meguyer
patent: 1510584 (1924-10-01), Cosby
patent: 1600389 (1926-09-01), Barrett
patent: 1688178 (1928-10-01), Drevitson
patent: 1846671 (1932-02-01), Barrett
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patent: 5083780 (1992-01-01), Walton
patent: 5294119 (1994-03-01), Vincent
patent: 5324032 (1994-06-01), Minami
patent: 5427373 (1995-06-01), Kusumoto
patent: 5545094 (1996-08-01), Hsu
patent: 5599242 (1997-02-01), Solviche

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