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Title:
TUBE JOINT
Document Type and Number:
WIPO Patent Application WO/2013/172138
Kind Code:
A1
Abstract:
In order to prevent, with a simple structure, a fluid from entering from the outside of a sleeve to the inside, the sleeve (2) is deformed toward a nipple (1) such that the diameter of the sleeve is decreased, thereby inducing a seal member (3) to deform so as to expand in the axial direction and causing a first seal surface (3a) to come into tight contact with the front end surface (B2) of a tube body (B), and simultaneously causing a second seal part (3b) to fit into an annular space part (4) and come into tight contact with both the nipple (1) and the sleeve (2). Thus, fluid will not enter from the outside of the sleeve (2) toward the inside, even if the exposed surfaces of the nipple (1) and the sleeve (2) come into contact with a fluid, such as when the tube joint is immersed in a liquid in the aforementioned connected state.

Inventors:
ZEMBUTSU Yohei (4371, Maezawa, Kurobe-sh, Toyama 85, 〒9388585, JP)
Application Number:
JP2013/061262
Publication Date:
November 21, 2013
Filing Date:
April 16, 2013
Export Citation:
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Assignee:
TOYOX CO., LTD. (4371, Maezawa Kurobe-sh, Toyama 85, 〒9388585, JP)
International Classes:
F16L33/20
Domestic Patent References:
WO2011070437A1
Foreign References:
JP2007278378A
JPS6435195A
JPS5368421A
Attorney, Agent or Firm:
EICHI PATENT & TRADEMARK CORP. (45-13, Sengoku 4-chome Bunkyo-k, Tokyo 11, 〒1120011, JP)
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