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Title:
SHAFT
Document Type and Number:
Japanese Patent JPH09327873
Kind Code:
A
Abstract:

To control occurrence of a prickly fiber even though a shaft is injured while it is difficult to be injured by a method wherein a heat shrinkable film covered layer is provided around a cylindrical shaft formed by laminating a plurality of fiber reinforced resin layers.

In a cylindrical or columnar shaft formed by laminating a plurality of fiber reinforced resin layers, a heat shrinkable film covered layer is provided around the shaft. A golf club shaft 1 is of a cylindrical form tapered by 5-8/1000 in an axial X-direction. A center of the shaft 1 has a hollow part 2, and the fiber reinforced resin layer 3 is laminated around the hollow part 2. About 4 to 12 layers of fiber reinforced resin sheets (prepreg) are wound around the same tapered mandrel as a taper of the shaft, and heated in a heating apparatus to form the resin layer 3. The reinforced fiber to be used is a carbon fiber, a glass fiber, a boron fiber, etc.


Inventors:
HIRUTA MASAOMI
IIDA KATSUMI
Application Number:
JP16837296A
Publication Date:
December 22, 1997
Filing Date:
June 07, 1996
Export Citation:
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Assignee:
BRIDGESTONE SPORTS CO LTD
International Classes:
A63B49/10; A63B53/10; A63B59/60; A63C11/22; B32B1/08; A63B102/04; A63B102/32; A63B102/38; (IPC1-7): B32B1/08; A63B49/10; A63B53/10; A63B59/18; A63C11/22
Attorney, Agent or Firm:
増田 竹夫