Title:
EXTRUDE PIPE CONNECTING PART WITH INTEGRATED SINGLE AND DOUBLE CLAMPING RING
Document Type and Number:
WIPO Patent Application WO/2008/071073
Kind Code:
A1
Abstract:
An extruded pipe connecting part with integrated single and double clamping ring, or concretely a single-clamping ring and double-clamping ring compressible-type ISO 8434-1 extruded pipe connecting part. It comprises a connecting body, an extruding clamping ring and a driving nut. It is of single-clamping ring type when installed with an single-clamping ring type extruding clamping ring. It is of double-clamping ring type when installed with double-clamping ring type extruding clamping ring (a sealing clamping ring and an enclasping clamping ring). The single-clamping ring type pipe connecting pieces primarily provides extrusion-flattening sealing connection separately via the sealing cantilever of the clamping ring head wedge and then provides extrusion-concaving fixed connection via clamping ring inner edge. It further provides stop sense for the screwing-down operation in installation via the hood rear wedge and has specific stop sense for the screwing-down operation in installation with over-drive resistance by shielding the over-drive movement of the clamping ring rear with the help of the automatic radial outward-raising movement of the middle part of the clamping ring. The double-clamping ring type pipe connecting piece firstly provides separate extrusion-flattening sealing connection by sealing the clamping ring head wedge and then provides transitional connection by sealing the clamping ring inner edge. It further provides extrusion-concaving fixed connection by holding the clamping ring and provides more specific stop sense for the screwing-down operation in installation with over-drive resistance via the extrusion-concaving fasten groove. There is self-sealing function in the bivouacking medium of the sealing cantilever. The vibration/oscillation-resisting sealing cantilever of its own can have stronger vibration/oscillation resistance in sealing connection after being double fastened and isolated.
Inventors:
XU CHANGXIANG (CN)
Application Number:
PCT/CN2007/003486
Publication Date:
June 19, 2008
Filing Date:
December 07, 2007
Export Citation:
Assignee:
ZHEJIANG CHINA VALVE CO LTD (CN)
XU CHANGXIANG (CN)
XU CHANGXIANG (CN)
International Classes:
F16L19/08
Domestic Patent References:
| WO2006088668A1 | 2006-08-24 | |||
| WO2005043023A1 | 2005-05-12 |
Foreign References:
| CN1826490A | 2006-08-30 | |||
| CN2128376Y | 1993-03-17 | |||
| US2139413A | 1938-12-06 | |||
| US2414995A | 1947-01-28 | |||
| US5351998A | 1994-10-04 | |||
| US2484815A | 1949-10-18 | |||
| US20040066040A1 | 2004-04-08 | |||
| US20060049632A1 | 2006-03-09 | |||
| US20060012169A1 | 2006-01-19 | |||
| US0650330A | 1900-05-22 | |||
| DE4041677A1 | 1992-06-25 | |||
| DE4103266A1 | 1992-08-13 | |||
| DE4426445A1 | 1995-02-09 | |||
| US6073976A | 2000-06-13 | |||
| US3075793A | 1963-01-29 | |||
| US3103373A | 1963-09-10 | |||
| US5882050A | 1999-03-16 | |||
| US6131963A | 2000-10-17 | |||
| US6629708B2 | 2003-10-07 |
Other References:
CRAWFORD'S SWAGELOK DOUBLE FERRULE DESIGN, 1947
WILLIAMS'S SINGLE FERRULE DESIGN, 2002
WILLIAMS'S SINGLE FERRULE DESIGN, 2002
Attorney, Agent or Firm:
CHINA TRADEMARK & PATENT LAW OFFICE CO., LTD (14 Yuetannanjie, Xichengqu, Beijing 5, CN)
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