Pipe coupling
US5316352A · kind A · utility
26Cited by
11References
9Claims
0Family size
Inventor
Key dates
| Filing date | Dec 16, 1991 |
| Grant date | May 31, 1994 |
| Priority date | — |
| Expiry date | Dec 16, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L1/036
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for coupling pipe, and installing coupled pipe in a trenchless installation, the pipe being adapted for use as a watermain or the like. Lengths of watermain pipe are provided with a bell at each end, and connecting nipples adapted to be received within opposing bells, to effect a fluid-tight seal. As lengths of watermain are urged into a trenchless tunnel, opposing bell-end faces withstand the force being exerted on the pipe sections, so that damage is avoided and a sealed underground pipe installation is economically and quickly effected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.