Apparatus for installing pipeline fill
US6158925A · kind A · utility
13Cited by
6References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1999 |
| Grant date | Dec 12, 2000 |
| Priority date | — |
| Expiry date | Mar 23, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F7/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for depositing fill material over a pipeline. A wide-track carriage is provided for straddling the pipeline trench, and this includes a shaker screen mechanism for screening aggregate fill material, such as excavated native spoils. The screened fill material is fed into the trench via a pivoting conveyor which is controlled by means of a pivotable and extensible boom. A mix auger is also provided for mixing water and cement with the fill material to form a cementitious Controlled Low Strength Material fill in those installations where this is needed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.