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Patent Searching and Data


Title:
GOLF CLUB SHAFT AND MANUFACTURE THEREOF
Document Type and Number:
Japanese Patent JPH09131422
Kind Code:
A
Abstract:

To obtain a composite shaft having the position of the center of gravity at the central part thereof along the length of the shaft by providing a thermally hardened layer tapered, made up of a unhardened rectangular thermosetting resin prepreg sheet produced by arranging a long fiber parallel with the long side thereof in the direction of the fiber.

A rectangular prepreg sheet 3 produced by arranging a long fiber 2 parallel with the long side thereof is wound on a mandrel 1. At this point, the prepreg sheet 3 comprising an unhardened thermosetting resin is made rectangular. Then, the rectangular prepreg sheet 3 is wound to be hardened thermally to manufacture a composite golf club shaft with the center of gravity shifted to the tip side thereof. The rectangular prepreg sheet 3 may be used in either a bias layer or a 0° layer. All or a part of the plurality of layers may be made up of the rectangular prepreg sheet 3.


Inventors:
YAMAZAKI AKIRA
MATSUMOTO AKIO
Application Number:
JP31167895A
Publication Date:
May 20, 1997
Filing Date:
November 07, 1995
Export Citation:
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Assignee:
FUJIKURA RUBBER LTD
International Classes:
A63B53/10; B29C70/06; B29C70/30; B32B5/28; C08J5/24; A63B102/32; B29K101/10; (IPC1-7): A63B53/10; B29C70/06; B32B5/28; C08J5/24
Attorney, Agent or Firm:
Amamiya Masaki