Composite golf club shaft having low moment of inertia

Details Composite golf club shaft having low moment of inertia Composite golf club shaft having low moment of inertia

1996-12-30

1998-07-07

Passaniti, Sebastiano

Games using tangible projectile

Golf

Club or club support

273DIG23, A63B 5310, A63B 5312

Patent

active

057760080

ABSTRACT:
In a preferred embodiment, a shaft for a golf club, the shaft including: tip and butt ends defined at opposite distal ends of the shaft's length; and the shaft having a balance point axially spaced from the tip end a distance in the range of from about 56 percent to about 58.5 percent of the shaft's length. In another preferred embodiment, there is provided a composite shaft for a golf club, the shaft including: tip and butt ends defined at opposite distal ends of the shaft's length; the shaft being tubular and tapering generally from a larger diameter at the butt end to a smaller diameter at the tip end; the shaft being constructed primarily of a first material having a first modulus of elasticity; and two, spaced apart cylinders of a second, reinforcing material, having a second modulus of elasticity greater than the first modulus of elasticity, disposed axially in the first material, the cylinders being disposed either side of a point axially spaced from the tip end a distance in the range of from about 45 percent to about 52 percent of the shaft's length.

REFERENCES:
patent: 2037636 (1936-04-01), Lagerblade
patent: 3691000 (1972-09-01), Kalnin
patent: 4000896 (1977-01-01), Lauraitis
patent: 4169595 (1979-10-01), Kaugars
patent: 4319750 (1982-03-01), Roy
patent: 5294119 (1994-03-01), Vincent
patent: 5465967 (1995-11-01), Boeckenhaupt
patent: 5599242 (1997-02-01), Solviche
patent: 5632691 (1997-05-01), Hannon

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