Title:
RESIN PIPE JOINT
Document Type and Number:
WIPO Patent Application WO/2010/064519
Kind Code:
A1
Abstract:
Provided is a resin pipe joint which is improved to have excellent assembling workability and handling performance by making it possible to check that a union nut has been tightened or almost has been tightened even when the pipe joint portion is invisible or difficult to recognize, and even at a noisy job site. A resin pipe joint is configured in such a manner that a diameter enlargement region (9) is pressed by a seal press portion (10) when a union nut (2) advances by screwing as a female screw (8) is screwed into a male screw (5) under a state where a tube (3) is fitted over an inner tube (4) to form a enlarged diameter portion (3A), wherein a torque variation portion (26) is configured so that the protrusion (20) of the joint body (1) and the recess (19) of the union nut (2) are fitted to or separated from each other by the flexural displacement of the protrusion (20) in the direction of the central axis (P) thereof when the seal press portion (10) presses the diameter enlargement region (9) to cause the turning and tightening of the union nut (2) that occurs approximately ahead of the end of the advancing by screwing of the screw nut .
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| JP2006077949 | HOSE CONNECTING STRUCTURE |
| WO/1995/005556 | AXIALLY SWAGED FITTING |
| WO/2018/087722 | ASSEMBLY FOR IRRIGATION |
Inventors:
IMANISHI RYO (JP)
YAMADA MASATERU (JP)
TESHIMA KAZUKIYO (JP)
NAKAMURA TAKEHIRO (JP)
KISHIMOTO TAKAYUKI (JP)
MASUDA AKIHIRO (JP)
NAKAGAWA KEN (JP)
YAMADA MASATERU (JP)
TESHIMA KAZUKIYO (JP)
NAKAMURA TAKEHIRO (JP)
KISHIMOTO TAKAYUKI (JP)
MASUDA AKIHIRO (JP)
NAKAGAWA KEN (JP)
Application Number:
PCT/JP2009/068964
Publication Date:
June 10, 2010
Filing Date:
November 06, 2009
Export Citation:
Assignee:
NIPPON PILLAR PACKING (JP)
IMANISHI RYO (JP)
YAMADA MASATERU (JP)
TESHIMA KAZUKIYO (JP)
NAKAMURA TAKEHIRO (JP)
KISHIMOTO TAKAYUKI (JP)
MASUDA AKIHIRO (JP)
NAKAGAWA KEN (JP)
IMANISHI RYO (JP)
YAMADA MASATERU (JP)
TESHIMA KAZUKIYO (JP)
NAKAMURA TAKEHIRO (JP)
KISHIMOTO TAKAYUKI (JP)
MASUDA AKIHIRO (JP)
NAKAGAWA KEN (JP)
International Classes:
F16L33/22
Foreign References:
| JPH07260068A | 1995-10-13 | |||
| JP2005344796A | 2005-12-15 | |||
| JPS6224091A | 1987-02-02 | |||
| JPH0341899A | 1991-02-22 | |||
| JPH0727274A | 1995-01-27 | |||
| JPH11230463A | 1999-08-27 |
Other References:
See also references of EP 2372214A4
Attorney, Agent or Firm:
SUZUE Shoji (JP)
Shoji Suzue (JP)
Shoji Suzue (JP)
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