Trench backfill device
US4539765A · kind A · utility
22Cited by
10References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 13, 1984 |
| Grant date | Sep 10, 1985 |
| Priority date | — |
| Expiry date | Jan 13, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F5/106
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device for backfilling a trench from spoil left alongside it comprises a forecarriage (7) and a main frame (10). The former comprises means (12) for positioning it centrally in the trench (3). The latter is located behind the former and carries one or more angled blades (9) and lateral stabilizers (18,19) adapted to contact the ground outside the spoil. The device is towed rather than pushed and if a long tow-rope is used a pipeline can be trenched and the trench backfilled in a single traverse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.