Coupling
US4436325A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1981 |
| Grant date | Mar 13, 1984 |
| Priority date | — |
| Expiry date | Nov 16, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L27/127
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A locking slip coupling for coupling two tubular elements in sealed relationship. The coupling comprises a first tubular member having an outer end for connection to one tubular element, and having an inner end comprising an axially extending locking sleeve, the locking sleeve having an annular gripping zone defined by the locking sleeve having a plurality of annular gripping teeth along its inner surface in the gripping zone, having cam means along its outer surface in the gripping zone, and by the locking sleeve being radially compressible in the gripping zone. The coupling further comprises a second tubular member having an outer end for connection to another tubular element, and having an inner end comprising an inner barrel located within the locking sleeve. The coupling further has an annular locking piston which surrounds the gripping zone, the locking piston being axially displaceable relatively to the first tubular member between an inoperative position and an operative locking position, and the locking piston having a locking zone with complementary cam means along the inner surface of the piston in the locking zone to cooperate with the cam means of the gripping zone in …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.