Method and apparatus for digging trenches
US5247743A · kind A · utility
8Cited by
28References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1992 |
| Grant date | Sep 28, 1993 |
| Priority date | — |
| Expiry date | Jul 2, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F3/3677
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A trenching apparatus comprises a boom assembly having a lower end mounted on a support base and an upper end connected to a boom mounting bracket which is joined by a coupler to a digger arm operative to form a trench alongside the support base following a trench line. Linear actuators are carried by the boom mounting bracket, the coupler and the digger arm to manipulate the digger arm about an X axis, a Y axis and a Z axis which are mutually perpendicular. Other linear actuators vertically raise and lower the boom assembly, and pivot it in an arc-shaped path relative to the support base, in the course of a trenching operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.