Joints for pipes, particularly intended for the oil industry
US4426105A · kind A · utility
68Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1981 |
| Grant date | Jan 17, 1984 |
| Priority date | — |
| Expiry date | Jul 15, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L15/009
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Joint for pipes of the type in which an end of a male member (1) provided with a thread is screwed into a female member (2) having a corresponding thread. On its outer surface, the male member has a circumferential groove (9) and on the inner surface the female member has a circumferential groove (10) which, in the screwed position, faces the groove of the male member. A spring ring (12) is provided to simultaneously engage in the said grooves. At least one of the grooves has an adequate radial depth to permit the retraction of the spring ring when the male member is engaged in the female member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.