Method and apparatus for making a joint for steel tubes
US4641410A · kind A · utility
5Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1985 |
| Grant date | Feb 10, 1987 |
| Priority date | — |
| Expiry date | Mar 22, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49771
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention concerns a new threaded joint for steel tubes, usable in particular in the petroleum industry, which contains a female element equipped with conical threads having an internal screw stop mating and a male element correspondingly threaded with a screw stop having a form corresponding to the female element. The male element stop and the female element stop are each manufactured by cold working using a tool capable of engaging in or on the threads of the corresponding element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.