Title:
ダーツのシャフト、ディップ及びダーツ
Document Type and Number:
Japanese Patent JP7337672
Kind Code:
B2
Abstract:
To provide a shaft, a dip, and a dart that have excellent durability.SOLUTION: A dart shaft comprises a connection part 48 at a tip 42 of a body 41, the connection part screwed into a rear end 23 of a barrel 20 of a dart 1. The connection part 48 includes: a male screw part 43 that is provided at the body tip 42 and is screwed into the rear end 23 of the barrel 20 of the dart 1; and a circular column part 44 provided between the male screw part 43 and the body tip 42. The circular column part 44 has an external diameter d1 and a length L1, the external diameter d1 being equal to a root diameter d2 of the male screw part 43. The external diameter satisfies, with respect to an external diameter D1 of the body tip 42, D1>d1 and L1/d1 is 0.3 to 4.0.SELECTED DRAWING: Figure 3
Inventors:
Ryutaro Kawaguchi
Application Number:
JP2019215548A
Publication Date:
September 04, 2023
Filing Date:
November 28, 2019
Export Citation:
Assignee:
Ryutaro Kawaguchi
International Classes:
A63B65/02; F42B6/04
Domestic Patent References:
| JP2010046256A | ||||
| JP2013121368A | ||||
| JP2010063582A |
Foreign References:
| US20120277042 |
Attorney, Agent or Firm:
Hiroshi Tokuin
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