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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.

Inventors:
KOMUKAI TAKUJI (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:
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Assignee:
NITTA CORP (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:
WO2010041362A12010-04-15
Foreign References:
JP2012143515A2012-08-02
JP2016194165A2016-11-17
JP2012147846A2012-08-09
JP2008200272A2008-09-04
JP2009165703A2009-07-30
JP2006334305A2006-12-14
JP2007325823A2007-12-20
JP2004298357A2004-10-28
Attorney, Agent or Firm:
YOSHIDA Tadanori (JP)
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