PRESSURE-RESISTANT PIPE JOINT AND PIPE CONNECTION METHOD USING SAME

WIPO Patent Application WO/2023/007771

A1

Provided is a pressure-resistant pipe joint capable of exhibiting excellent pressure resistance and pull-out prevention force without requiring use of fire or use of a dedicated tool in connection of a pipe body to be connected.　A pressure-resistant pipe joint 10 comprises: a joint main body 12 which a copper pipe 26 is inserted into and fixed to; a restriction ring 14 provided with a plurality of locking claws that prevent the copper pipe 26 from being pulled out; a guide ring 16 configured to be fitted to and placed in the restriction ring 14 and moved to an inner part of an insertion hole 28 through insertion of the copper pipe 26 such that the copper pipe 26 substitutes the guide ring 16 and is placed in the restriction ring 14; an O-ring 22 which is positioned on the axially outer side of the restriction ring 14 in the insertion hole 28 and which seals a space between the copper pipe 26 and the insertion hole 28; and a pressurizing nut 24 which is threadedly engaged with the joint main body 12 and which pressurizes and compresses the O-ring through the progress of the threaded engagement.

WAKABAYASHI HIROYUKI (JP)

PCT/JP2022/003286

February 02, 2023

January 28, 2022

Click for automatic bibliography generation  

NJT COPPER TUBE CORP (JP)

F16L37/12; F16L21/08; F16L37/091

US20090021001A1	2009-01-22
JP2011132981A	2011-07-07
US20060232067A1	2006-10-19
JP2009180273A	2009-08-13
JPH11351466A	1999-12-24
JPH06147374A	1994-05-27
US6450550B1	2002-09-17
JP2019090503A	2019-06-13
JP2010002022A	2010-01-07
US20140232110A1	2014-08-21

NAKASHIMA, Michio et al. (JP)

View/Download PDF      PDF Help

Previous Patent: DETECTION SYSTEM FOR DETECTING BOARDING SECTION OF AIRCRAFT

Next Patent: SOLID-STATE IMAGING ELEMENT