Title:
STRING PROTECTION MATERIAL AND RACKET WITH STRING PROTECTION MATERIAL
Document Type and Number:
Japanese Patent JP2004008520
Kind Code:
A
Abstract:
To provide a string protection material, realizing the high vibration damping performance and reduction of weight of a racket while maintaining enough strength, and to improve the degree of freedom for designing the racket by the string protective material.
This string protection material 20 includes a cylindrical part 21 for inserting a string S, and a base part 22 projected on the cylindrical part 21. At least a part of the cylindrical part is formed of plastic material blended with micro hollow powder, and preferably the true density of the protective material itself ranges from 0.7 to 1.0g/cm3, both inclusive.
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JPH09122274 | TENNIS RACKET |
JP2001353235 | RACKET FOR COMPETITION |
Inventors:
TAKEUCHI HIROYUKI
Application Number:
JP2002166853A
Publication Date:
January 15, 2004
Filing Date:
June 07, 2002
Export Citation:
Assignee:
SUMITOMO RUBBER IND
International Classes:
A63B49/02; A63B49/022; A63B51/10; A63B60/54; A63B102/02; (IPC1-7): A63B51/10; A63B49/02
Domestic Patent References:
JPH07178201A | 1995-07-18 | |||
JPH1133143A | 1999-02-09 | |||
JPH07171843A | 1995-07-11 | |||
JP2002065903A | 2002-03-05 | |||
JPH0914564A | 1997-01-17 |
Attorney, Agent or Firm:
Kazumi Owada
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