Pipe couplings
US4042263A · kind A · utility
Inventor
Key dates
| Filing date | Jun 20, 1975 |
| Grant date | Aug 16, 1977 |
| Priority date | — |
| Expiry date | Jun 20, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L17/035
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The specification discloses a coupling sleeve for coupling together lengths of pipe in substantially sealed relationship. The coupling sleeve has a socket portion for a pipe, and a resilient annular seal is mounted at the outer end of the socket portion for engagement by the leading end of the pipe when the latter enters the socket portion. The seal is retained in position by means of a locking ring snap-fitted over an outwardly extending abutment provided on the socket portion. To provide a seal against liquid leakage along interfaces between the seal and the end surface of the socket portion, and also between the seal and the adjacent surface of the locking ring, a narrow land portion of the seal undergoes substantial axial compression by the locking ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.