Title:
PIPE JOINT
Document Type and Number:
WIPO Patent Application WO/2022/153585
Kind Code:
A1
Abstract:
A pipe joint according to the present invention has a main body having an external thread and a sleeve having an internal thread, at least one of the external thread and the internal thread including a first screw thread and a second screw thread, the other thereof including a first thread groove and a second thread groove. Transverse sections of the first screw thread and the second screw thread differ from each other in shape or size. The transverse section of the first screw thread fits inside a transverse section of the first thread groove. The transverse section of the first screw thread does not fit inside a transverse section of the second thread groove, while the transverse section of the second screw thread fits inside the transverse section of the second thread groove. A tip portion of the second screw thread has a tapered width, and a tip portion of the first thread groove has a reverse tapered width. A transverse section of a tip portion of the first screw thread has a shape that does not fit inside a transverse section of a tip portion of the second thread groove.
Inventors:
IIDA TOSHIHIDE (JP)
ONISHI KENJI (JP)
NOTOJI YU (JP)
MINAMIHARA SHOHEI (JP)
TANABE HIROKI (JP)
ONISHI KENJI (JP)
NOTOJI YU (JP)
MINAMIHARA SHOHEI (JP)
TANABE HIROKI (JP)
Application Number:
PCT/JP2021/031312
Publication Date:
July 21, 2022
Filing Date:
August 26, 2021
Export Citation:
Assignee:
NIPPON PILLAR PACKING (JP)
International Classes:
F16L15/04; F16B33/02; F16L15/06
Foreign References:
| JP2007512885A | 2007-05-24 | |||
| JP2005000466A | 2005-01-06 | |||
| JPS6228514A | 1987-02-06 | |||
| JP2013135729A | 2013-07-11 | |||
| JP2010023902A | 2010-02-04 |
Attorney, Agent or Firm:
SUZUE Shoji (JP)
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