发明名称 |
Flareless pipe coupling structure, flareless pipe coupling method, and on-site pipe coupling method |
摘要 |
A guide tapered surface 17 of a pipe coupling port 16 has a small diameter portion 17a guiding to a distal end portion 3a of a bite type sleeve 3 to bite into a coupling pipe 5 and a large diameter portion 17b sealing a tapered outer circumferential surface 33 of the bite type sleeve 3 by making close contact with the tapered outer circumferential surface 33 of the bite type sleeve 3. A tilt angle α1 of the small diameter portion 17a relative to a central axis of the guide tapered surface 17 is greater than a tilt angle α2 of the large diameter portion 17b relative to the central axis. Therefore, even when a distal end portion of the coupling pipe 5 is not inserted up to an innermost portion of the pipe coupling port 16, excellent sealing performance is obtained in a portion coupled to the coupling pipe.
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申请公布号 |
US7954856(B2) |
申请公布日期 |
2011.06.07 |
申请号 |
US20070225113 |
申请日期 |
2007.03.30 |
申请人 |
DAIKIN INDUSTRIES, LTD. |
发明人 |
NAKATA HARUO;SHIMAMURA TAKASHI |
分类号 |
F16L37/00 |
主分类号 |
F16L37/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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