Threaded joint for pipes
US5769466A · kind A · utility
28Cited by
18References
24Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 8, 1997 |
| Grant date | Jun 23, 1998 |
| Priority date | — |
| Expiry date | Aug 8, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L15/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The joint according to the invention relates to a sealed connection between metal pipes used for producing petroleum tubings or casings. This joint comprises a sleeve fitted with two threaded housings suitable for receiving the male ends of two pipes. The end faces thereof come to bear one against the other inside the sleeve. An annular convex tapering zone near the end face of each pipe bears in a sealing manner against an annular concave tapering zone of the sleeve. Shoulder stops 16 ensure the centering of each male end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.