Title:
RACKET FRAME
Document Type and Number:
Japanese Patent JP2002035170
Kind Code:
A
Abstract:
To provide a racket frame which achieves excellent restitution characteristic in addition to excellence in lighter weight and operability and moreover secures a sufficient strength to hold gut spread with a higher tension.
An inner wall 12a of an outer shell layer 6 making up the side of an outer circumference portion 8 of a ball hitting part and a thin reinforcing rib 13 as link to bridge the inner wall 12a and an inner wall 12b of the outer shell layer 6 on the side of the inner circumference portion 9 facing the inner wall 12a are formed integrally in a hollow internal part of a tubular- structured outer layer 6.
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Inventors:
KANAMORI KATSUJI
HONDA YOJI
NAGAO YASUSHI
HONDA YOJI
NAGAO YASUSHI
Application Number:
JP2000220462A
Publication Date:
February 05, 2002
Filing Date:
July 21, 2000
Export Citation:
Assignee:
MIZUNO KK
International Classes:
A63B49/02; A63B102/02; (IPC1-7): A63B49/02