Title:
JOINT
Document Type and Number:
WIPO Patent Application WO/2022/224873
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a joint with which there is no occurrence of seizing of a tapered part of a surface-treated body during installation of piping. This joint comprises: a body 2 in which a tapered portion 20 is formed on at least one edge inner peripheral surface of the body, threaded portions 21 are formed on an outer peripheral surface of the body, and a flow path is formed in the body; a ring 4 having a tapered outer peripheral surface 40 which makes sliding contact with the tapered portion 20 of the body 2; and a nut 3 which, among the threaded portions 21 of the body 2, is screw-fitted to a parallel threaded portion 21a on a side where piping 6 is connected, the nut pressing the tapered outer peripheral surface 40 of the ring 4 against the tapered surface 20 of the body 2, wherein the body 2 is surface treated to prevent adsorption of liquid on the surface thereof, and the surface of the ring 4 is subjected to a gold plating treatment.
Inventors:
YANAGIDA YASUMASA (JP)
HIRAMATSU KOJI (JP)
KANZAKI TOMOYA (JP)
YAKUSHIJIN TADAYUKI (JP)
SHIMOMURA YOSHINORI (JP)
HIRAMATSU KOJI (JP)
KANZAKI TOMOYA (JP)
YAKUSHIJIN TADAYUKI (JP)
SHIMOMURA YOSHINORI (JP)
Application Number:
PCT/JP2022/017578
Publication Date:
October 27, 2022
Filing Date:
April 12, 2022
Export Citation:
Assignee:
FUJIKIN KK (JP)
International Classes:
F16L19/025; C23C16/42; F16L19/08
Foreign References:
| JP2016535172A | 2016-11-10 | |||
| JP2018506007A | 2018-03-01 | |||
| JPH0814449A | 1996-01-16 | |||
| US5560661A | 1996-10-01 | |||
| JP2009526914A | 2009-07-23 |
Attorney, Agent or Firm:
MATSUMURA Naoto et al. (JP)
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