Title:
ダーツ
Document Type and Number:
Japanese Patent JP7399458
Kind Code:
B2
Abstract:
A dart may comprise—in order from the front thereof—a point, a barrel, a shaft, and a flight. The flight may comprise a plurality of fins. The fins may comprise mesh-like reinforcing ribs that protrude from surfaces thereof. The fins may further comprise, at peripheries thereof, fin rims formed so as to be of increased thickness. Reinforcing ribs may be formed over the approximate entireties of the fins. The shaft may comprise an insertion portion at the back end thereof. The flight may comprise a central axial hole having an opening at the front end thereof. The shaft may be removably installable with respect to the flight by virtue of a cap-like arrangement by which the insertion portion is inserted within, and is coupled and secured to, the central axial hole. The central axial hole may be formed from the front end of the flight to the back end thereof.
Inventors:
Hiroaki Matsubara
Masayuki Matsubara
Masayuki Matsubara
Application Number:
JP2019208365A
Publication Date:
December 18, 2023
Filing Date:
November 19, 2019
Export Citation:
Assignee:
Cosmo Seiki Co., Ltd.
International Classes:
A63B65/02
Domestic Patent References:
| JP57103770U | ||||
| JP2014239834A |
Foreign References:
| US5642887 | ||||
| WO2018236220A1 |
Other References:
L-styleのdimpleは良いんじゃないでしょうか!,FC2 [online],日本,2014年05月26日,インターネット:,[検索日 2020.10.23]
Attorney, Agent or Firm:
Tadashi Aihara