DART

WIPO Patent Application WO/2021/100306

A1

[Problem] To provide a dart with which it is possible to prevent flying instability due to deformation of the fins of a flight, while providing the fins with flexibility.　[Solution] A dart 1 is provided, from a tip end side, with a point 10, a barrel 20, a shaft 30, and a flight 40, wherein the flight 40 is provided with a plurality of fins 41, and each fin 41 is provided with mesh-like reinforcing ribs 44 which protrude from the surface. Further, each fin 41 is additionally provided, at the peripheral edge thereof, with a fin edge 43 that is formed to be thick. Further, the reinforcing ribs 44 are formed over substantially the entire fin 41. Further: the shaft 30 is provided at the rear end thereof with an insertion portion 35; the flight 40 is provided with a central axial hole 46 having an opening 47 at the front end thereof; the shaft 30 and the flight 40 are configured in such a way as to be capable of being attached to and removed from one another using a cap method in which the insertion portion 35 is inserted into the central axial hole 46 and fixedly coupled thereto; and the central axial hole 46 is formed from the front end to the rear end of the flight 40.

MATSUBARA HIROAKI (JP)
MATSUBARA MASAYUKI (JP)

PCT/JP2020/035310

May 27, 2021

September 17, 2020

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COSMO SEIKI CO LTD (JP)

A63B65/02

WO2018236220A1

2018-12-27

JPS57103770U	1982-06-25
US5642887A	1997-07-01
JP2014239834A	2014-12-25

"L-style dimple, FC2", 26 May 2014 (2014-05-26), Retrieved from the Internet [retrieved on 20201023]

AIBARA Tadashi (JP)

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