Pipe supporting dam assembly for pipeline construction and method
US4844657A · kind A · utility
8Cited by
4References
8Claims
0Family size
Inventors
Key dates
| Filing date | Sep 30, 1988 |
| Grant date | Jul 4, 1989 |
| Priority date | — |
| Expiry date | Sep 30, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L1/028
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pipe supporting dam assembly and method for pipeline construction employing a planar dam sheet with a collar and a flexible sleeve for receiving and supporting the pipe, and clamping means to seal the collar to the outside of the pipe to prevent fill material in the trench being washed away by groundwater along the outside surface of the pipe, particularly in the case of sloping pipeline construction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.