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Title:
RACKET FRAME
Document Type and Number:
Japanese Patent JP2011024619
Kind Code:
A
Abstract:

To provide a racket frame capable of easily diversifying the characteristics such as rigidity and strength partially.

A first prepreg 11, a blade 20 and the second to sixth prepregs 12-16 are layered on a tube 30 in this order from the inner side. The blade 20 is formed by knitting a plurality of reinforcing fibers 21. The blade 20 is layered on a face portion 33 at 3 o'clock and at 9 o'clock positions, positions including the center C in the length L0 in the direction of a center line X of the face portion 33. The layered body is disposed within a forming die having a racket frame-shaped cavity, and the racket frame 1 is manufactured by heating and pressurizing the layered body disposed within the forming die after clamping the forming die.


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Inventors:
MATSUOKA TOYOTAKE
NOTAKE TAKAHIRO
Application Number:
JP2009170214A
Publication Date:
February 10, 2011
Filing Date:
July 21, 2009
Export Citation:
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Assignee:
BRIDGESTONE SPORTS CO LTD
International Classes:
A63B49/02; A63B49/10; A63B102/02
Domestic Patent References:
JP2001269424A2001-10-02
JPH10337342A1998-12-22
JP2000233032A2000-08-29
JP2002065904A2002-03-05
JP2003117034A2003-04-22
JPH06319835A1994-11-22
JPS5441364U1979-03-19
JP2000342719A2000-12-12
JP2004313771A2004-11-11
JPH1142299A1999-02-16
JPH11290484A1999-10-26
JPH08770A1996-01-09
Attorney, Agent or Firm:
Tsuyoshi Shigeno
Arinaga Shun