Title:
SHAFT AND FRAME USED FOR BADMINTON RACKET, TENNIS RACKET, GOLF CLUB, SNOWBOARD, OR BICYCLE
Document Type and Number:
WIPO Patent Application WO/2018/151009
Kind Code:
A1
Abstract:
Provided is a shaft or frame of a badminton racket, a tennis racket, or a bicycle, or a shaft of a golf club or snowboard, the shaft and the frame being able to maintain strength and increase flexibility. A shaft 12 is provided with: a cylindrical inner layer 15; and at least one coating layer 16 layered around an axis X on the outer side of the inner layer 15 so as to be concentric with the inner layer 15. The shaft 12 is characterized by being a carbon fiber-reinforced molded article in which at least one layer of the inner layer 15 and the coating layer 16 includes a composite material and a resin cured product that are arranged in the at least one layer. The shaft 12 is characterized in that the composite material has: a carbon fiber bundle in which a plurality of continuous carbon fibers are arranged; and carbon nanotubes attached to the surfaces of the carbon fibers.
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Inventors:
KOMUKAI TAKUJI (JP)
NAKAI KATSUYUKI (JP)
TERUHIRA HIROMI (JP)
ONIZUKA MAKI (JP)
UNO TOSHIKAZU (JP)
GOTO TAKETOSHI (JP)
NAKAI KATSUYUKI (JP)
TERUHIRA HIROMI (JP)
ONIZUKA MAKI (JP)
UNO TOSHIKAZU (JP)
GOTO TAKETOSHI (JP)
Application Number:
PCT/JP2018/004427
Publication Date:
August 23, 2018
Filing Date:
February 08, 2018
Export Citation:
Assignee:
NITTA CORP (JP)
YONEX CO LTD (JP)
YONEX CO LTD (JP)
International Classes:
A63B49/10; A63B53/10; A63C5/12; B29C70/16; B32B1/08; B62K19/16; A63B102/02; A63B102/04; A63B102/32
Domestic Patent References:
WO2010041362A1 | 2010-04-15 |
Foreign References:
JP2012143515A | 2012-08-02 | |||
JP2016194165A | 2016-11-17 | |||
JP2012147846A | 2012-08-09 | |||
JP2008200272A | 2008-09-04 | |||
JP2009165703A | 2009-07-30 | |||
JP2006334305A | 2006-12-14 | |||
JP2007325823A | 2007-12-20 | |||
JP2004298357A | 2004-10-28 |
Attorney, Agent or Firm:
YOSHIDA Tadanori (JP)
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