Golf club shaft

Details Golf club shaft Golf club shaft

2005-02-22

2005-02-22

Blau, Stephen (Department: 3711)

Games using tangible projectile

Golf

Club or club support

Reexamination Certificate

active

06857972

ABSTRACT:
A golf club shaft1has a prepreg (15) consisting of an intermediate-elasticity and high-strength carbon fiber reinforced resinous sheet having a tensile modulus of elasticity of 30 ton/mm2to 33 ton/mm2and a tensile strength of not less than 5000 MPa and a prepreg (16) consisting of a low-elasticity carbon fiber reinforced resinous sheet having a tensile modulus of elasticity of 5 ton/mm2to 10 ton/mm2and compressive breaking strain of not less than 2.0%. The prepregs (15) and the prepregs (16) are used to reinforce a tip side of the golf club shaft.

REFERENCES:
patent: 5156396 (1992-10-01), Akatsuka et al.
patent: 6273830 (2001-08-01), Takemura et al.
patent: 5-49717 (1993-03-01), None

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