Title:
TENNIS RACKET
Document Type and Number:
Japanese Patent JP2000061004
Kind Code:
A
Abstract:
To increase the effective length of a gut without lowering the strength of a gut-strung part.
At least a part of string holes bored in a gut-strung part 12 surrounding a face side 11 of a hollow frame formed of a fiber-reinforced resin in communication between the interior part and the exterior part 20 thereof are made smaller in the exterior part 20 than in the interior part thereof. The diameter of the holes at the exterior part 20 thereof is set in a range of 3.7 mm-3.0 mm.
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| JP3508429 | TUBULAR MEMBER MADE OF FIBER REINFORCED PLASTIC |
| JP6943632 | racket |
Inventors:
NIWA KUNIO
Application Number:
JP23908198A
Publication Date:
February 29, 2000
Filing Date:
August 25, 1998
Export Citation:
Assignee:
SUMITOMO RUBBER IND
International Classes:
A63B49/02; A63B49/022; A63B51/06; A63B102/02; (IPC1-7): A63B49/02; A63B51/06
Domestic Patent References:
| JPH01166780A | 1989-06-30 | |||
| JPS6320867U | 1988-02-10 | |||
| JPH08107951A | 1996-04-30 |
Foreign References:
| EP0884074A2 | 1998-12-16 |
Attorney, Agent or Firm:
Kazumi Owada