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Patent Searching and Data


Title:
PIPE JOINT
Document Type and Number:
WIPO Patent Application WO/2013/058358
Kind Code:
A1
Abstract:
A pipe joint is configured so that, even if a creep phenomenon occurs in a pipe body, the pipe joint retains high strength for resisting the dislocation of the pipe body. A pipe body (B) is inserted into an insertion space (S) adapted for the insertion of the pipe body (B) and formed along the outer peripheral surface (1a) of a nipple (1). In this state, a sleeve (4) is reduced in diameter and deformed by moving a first sloped surface (2) and a second sloped surface (3) relative to each other so that the first sloped surface (2) and the second sloped surface (3) approach each other. As a result, the outer surface (B2) of the pipe body (B) is partially compressively deformed by the inner peripheral surface of the sleeve (4) and at the same time the portion of the outer surface, the volume of which corresponds to the compressive deformation, is deformed and swollen from the front end outer peripheral portion (B3) of the pipe body (B) toward an annular recess (5) and fitted into the annular recess (5). The deformed and swollen front end outer peripheral portion (B3) of the pipe body (B) is caught by a stepped section (5a), and the entire pipe body (B) is held so that the pipe body (B) cannot move in the opposite direction (U) to the insertion direction (N) of the pipe body (B).

Inventors:
TAKIMOTO SHINJI (JP)
HAGIHARA CHIHIRO (JP)
MORIKAWA AKIRA (JP)
Application Number:
JP2012/077088
Publication Date:
April 25, 2013
Filing Date:
October 19, 2012
Export Citation:
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Assignee:
TOYOX CO., LTD. (4371, Maezawa Kurobe-sh, Toyama 85, 〒9388585, JP)
International Classes:
F16L19/08; F16L33/22; F16L47/04
Foreign References:
JP2001193881A
JPS6438385U
JP2001193876A
CH571678A5
JP2010281411A
JPS60126788U
JP2011058609A
Attorney, Agent or Firm:
EICHI PATENT & TRADEMARK CORP. (45-13, Sengoku 4-chome Bunkyo-k, Tokyo 11, 〒1120011, JP)
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Claims: