Title:
RACKET FRAME
Document Type and Number:
Japanese Patent JPH1028746
Kind Code:
A
Abstract:
To provide a racket frame made of titanium for advanced players, which easy to use, light and having a good producing performance and, a higher controllability.
In a racket frame comprising a bent hollow pipe made of titanium, the thickness thereof is 0.3-0.5mm and a groove 2a is provided on the inner circumferential surface of at least a face part 2. The ratio S/T of the surface thickness S and the rear width T exceeds 0.3. When a load of 6kg is applied in the direction vertical to a gut surface with respect to the maximum width part of the face part, the angle of twisting about the frame shaft is below 2.0°.
Inventors:
TAKAHASHI YASUHIKO
MATSUOKA TOYOTAKE
YAMADA TADATOSHI
IIDA KATSUMI
MATSUOKA TOYOTAKE
YAMADA TADATOSHI
IIDA KATSUMI
Application Number:
JP28832196A
Publication Date:
February 03, 1998
Filing Date:
October 30, 1996
Export Citation:
Assignee:
BRIDGESTONE SPORTS CO LTD
International Classes:
A63B49/12; A63B49/02; (IPC1-7): A63B49/02; A63B49/12
Attorney, Agent or Firm:
Tsuyoshi Shigeno
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