Golf club shaft and golf club using the same
AssigneeFujikura Rubber Ltd.
InventorsMasaki Nakamura, Masaki Wakabayashi
Life of this patent
Estimating the term…
Abstract
A golf club shaft formed by winding prepregs made of uncured thermosetting resin into a tapered shape and curing the prepregs thermally, the prepregs include a first woven fabric prepreg which is made of one of a triaxial woven fabric or a tetra-axial woven fabric that are impregnated with uncured thermosetting resin, and a second woven fabric prepreg which is made of one of a triaxial woven fabric or a tetra-axial woven fabric that are impregnated with uncured thermosetting resin.
Claims9
A golf club shaft formed by winding a plurality of prepregs made of uncured thermosetting resin into a tapered shape and curing said prepregs thermally, said prepregs comprising:
- a first woven fabric prepreg which is made of one of a triaxial woven fabric or a tetra-axial woven fabric that is impregnated with uncured thermosetting resin;
- a second woven fabric prepreg which is made of one of a triaxial woven fabric or a tetra-axial woven fabric that is impregnated with uncured thermosetting resin;
- an intermediate prepreg interposed between said first woven fabric prepreg and said second woven fabric prepreg with said first and second woven fabric prepregs wound immediately inside and outside said intermediate prepreg, wherein said intermediate prepreg is made of a 0-degree layer, a long fiber direction of which is parallel to an longitudinal direction of said golf club shaft;
- and
- at least two bias prepregs layered and wound into a tapered shape, said first woven fabric prepreg and said second woven fabric prepreg being wound around said at least two bias prepregs.
A golf club shaft formed by winding a plurality of prepregs made of uncured thermosetting resin into a tapered shape and curing said prepregs thermally, said prepregs comprising:
- a first woven fabric prepreg which is made of one of a triaxial woven fabric or a tetra-axial woven fabric that is impregnated with uncured thermosetting resin;
- a second woven fabric prepreg which is made of one of a triaxial woven fabric or a tetra-axial woven fabric that is impregnated with uncured thermosetting resin;
- an intermediate prepreg interposed between said first woven fabric prepreg and said second woven fabric prepreg with said first and second woven fabric prepregs wound immediately inside and outside said intermediate prepreg, wherein said intermediate prepreg is made of a 0-degree layer, a long fiber direction of which is parallel to an longitudinal direction of said golf club shaft;
- and
- at least two 0-degree prepregs layered and wound around said first woven fabric prepreg and said second woven fabric prepreg.
Dependencies are inferred from the claim text.