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Japanese Patent JP7100850

B2

To provide a joint which can connect even hard and large-diameter pipe bodies by temporarily fastening diameter-expanded parts by using retention parts so as to be non-withdrawal by using fastening members.SOLUTION: A pipe joint comprises: nipples 11 arranged along insertion spaces S of hard pipe bodies B; seal members 12 protruding from the nipples 11 toward the insertion spaces S; and fastening members 20 relatively movably arranged at the pipe bodies B which are inserted along the nipples 11 in an axial direction, and having pressing parts 22 for pressing the pipe bodies B to the nipples 11 accompanied by relative movement to the nipples 11. The pipe bodies B have diameter-expanded end parts Ba inserted along external peripheral faces of the nipples 11, and inclination inner faces B1 gradually expanded in inner diameters toward terminal end parts of the pipe bodies B at internal peripheral faces of the diameter-expanded end parts Ba. The external peripheral faces of the nipples 11 have retention parts 13 which are formed at depth sides in insertion directions of the pipe bodies B rather than arrangement positions of the seal members 12, bite into the inclination faces B1, and are engaged in reverse directions reverse to the insertion directions of the pipe bodies B.SELECTED DRAWING: Figure 1

WO/2010/131028	A CONNECTION ASSEMBLY
JPS5285709	INTEGRAL CONNECTING MEMBER
WO/1990/002287	A FORCE CONCENTRATING UNITARY FITTING

Shuji Sugita
Marco Petena

JP2018188626A

July 14, 2022

October 03, 2018

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Toyox Co., Ltd.
Aqua Technique Group Esse Pier

F16L19/14; F16L19/04

JP2003254475A
JP2011106662A
JP2013221552A
JP2001153285A
JP6028479U

Patent Attorney Corporation Wisdom International Patent and Trademark Office

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