Title:
RACKET
Document Type and Number:
Japanese Patent JP2002320690
Kind Code:
A
Abstract:
To provide a racket which has its center of gravity move to the upper side of the racket when swinging so that a moment of inertia is improved and a strong hit is achieved.
A racket is composed of a frame body made up by a face section, a shaft section and a grip section. Including parts at its maximum width of the frame around the face section, grooves of length of 10% to 20% of an entire circumference of the frame around the face section are provided at two places. Furthermore, a tube closed at both ends with a movable weight of 2 g to 10 g inside is set in each groove.
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Inventors:
MATSUOKA TOYOTAKE
SHIRAI SATOSHI
SHIRAI SATOSHI
Application Number:
JP2001375572A
Publication Date:
November 05, 2002
Filing Date:
December 10, 2001
Export Citation:
Assignee:
BRIDGESTONE SPORTS CO LTD
International Classes:
A63B49/00; A63B49/10; A63B60/02; A63B60/04; A63B60/52; A63B102/02; A63B102/04; A63B102/06; (IPC1-7): A63B49/04; A63B49/06; A63B49/10
Attorney, Agent or Firm:
Yoshihiro Nagare (3 outside people)