CONNECTION STRUCTURE FOR RESIN PIPE

Title:

CONNECTION STRUCTURE FOR RESIN PIPE

Document Type and Number:

WIPO Patent Application WO/2006/033354

Kind Code:

A1

Abstract:

A connection structure for a resin pipe, in which leakage of fluid from between a metal pipe and the resin pipe fitted on the metal pipe is prevented for a long time. In the connection structure, at least two diameter-expanded sections (10, 11) are formed with a spacing on an end region of a metal pipe (1), the spacing between the two diameter-expanded sections (10, 11) functioning as a circumferential groove (12) in which a seal ring (SR) is received, and a resin tube (2) is fitted up to a position beyond a far side diameter-expanded section (11) of the two diameter-expanded sections (10, 11). A back ring (BR) is received in the circumferential groove (12) together with the seal ring (SR). The diameter-expanded sections (10, 11) of the metal tube (1) are formed by bulging or spool shape-forming process.

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Inventors:

ITO SEIJI (JP)
OKADA JUN (JP)

Application Number:

PCT/JP2005/017387

Publication Date:

March 30, 2006

Filing Date:

September 21, 2005

Export Citation:

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Assignee:

NITTA MOORE CO LTD (JP)
HORIE KINZOKU KOGYO KABUSHIKI (JP)
ITO SEIJI (JP)
OKADA JUN (JP)

International Classes:

F16L33/00; F16L33/24; F16L33/28

Foreign References:

JP2002228068A	2002-08-14
JPH0979462A	1997-03-25
JP2004011877A	2004-01-15
JP2002228068A	2002-08-14
JPH0979462A	1997-03-25
JP2004011877A	2004-01-15
JPS56166390A	1981-12-21

Other References: