Method of making pipe coupling joint
US4257155A · kind A · utility
94Cited by
7References
8Claims
0Family size
Inventor
Key dates
| Filing date | Aug 9, 1978 |
| Grant date | Mar 24, 1981 |
| Priority date | — |
| Expiry date | Aug 9, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49945
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Disclosed is a pipe coupling joint comprising an interference fit coupling of unthreaded pipe sections. The end of the outer pipe in a telescoped interference fit coupling is radially compressed to form a groove in the inner pipe. The crimped end is compressed into the groove to securely couple the pipe sections together. Lined pipe joints and methods and apparatus for forming the improved interference fit joint are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.