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Patent Searching and Data


Title:
RACKET FRAME
Document Type and Number:
Japanese Patent JP2003320059
Kind Code:
A
Abstract:

To provide a racket frame of light weight excellent in impact resilient performance, having satisfactory operability, and having enough strength.

In this racket frame made of a fiber-reinforced resin and/or thermoplastic resin for constituting continuously a head part surrounding a hitting face, a throat part, a shaft part and a grip part, fiber-reinforced prepregs 19a in which a carbon fiber having a tensile elastic modulus of 200 GPa-600 GPa is used as a reinforcing fiber, and in which a fiber angle of the reinforcement fiber is 0°±30° with respect to the axial direction of the racket frame are layered collectively along the hitting face direction in the cross section of the racket frame, and a ratio A/B of a hitting-directional thickness A in the cross section of the racket frame to an in-plane-directional thickness B thereof is made to be brought within a range of 1.2-3.0.


Inventors:
ASHINO TAKESHI
Application Number:
JP2002127477A
Publication Date:
November 11, 2003
Filing Date:
April 26, 2002
Export Citation:
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Assignee:
SUMITOMO RUBBER IND
International Classes:
A63B49/10; A63B102/02; (IPC1-7): A63B49/10
Attorney, Agent or Firm:
Kazumi Owada