Pole lifting apparatus
US4620693A · kind A · utility
6Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1984 |
| Grant date | Nov 4, 1986 |
| Priority date | — |
| Expiry date | Jul 19, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H12/34
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Apparatus for lifting electric line poles is disclosed which also enables a ground rod or stake to be driven into the ground next to such a pole. There is provided a telescopic mast having a hoist with a rope run over pulleys to a lifting hook and attached at the upper end of the mast. For driving in ground rods or stakes a carriage mounted for movement along the mast is used which can be attached to the lifting hook and can secure an air hammer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.