Pipe joint, refrigeration device, heat pump hot water supply device, closing valve, water supply piping, method of connecting piping, and in-the field piping method
US7971909B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2006 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | Aug 22, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49934
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A pipe joint and a method of joining pipes using the pipe joint prevent loss of a sleeve, enhance workability in the pipe joining operation, and ensure sealing performance. The pipe joint may be utilized in a refrigerant device, a heat pump hot water supply device, a closing valve and a water supply piping. The method for connecting piping may be used in an in-the filed piping method. The pipe joint includes a joint body, a fastening member such as a nut, and a sleeve. The sleeve is integrated with the fastening member or the joint body before the fastening member is attached to the joint body. When the fastening member is attached to the joint body, the sleeve is cut off and separated from the fastening member or joint body. When the nut is fully attached, the sleeve bites into the pipe, and the pipe is joined to the joint body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.