Post extracting device
US6866248B1 · kind B1 · utility
6Cited by
2References
15Claims
0Family size
Inventor
Key dates
| Filing date | Nov 13, 2002 |
| Grant date | Mar 15, 2005 |
| Priority date | — |
| Expiry date | Nov 13, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H17/265
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A post extracting device having a frame, a ram supported on the frame with a piston extending outwardly therefrom, and a chain affixed to the piston. The ram serves to move the piston from a retracted position to an extended position. The chain is suitable for wrapping around the post. The ram pushes the chain upwardly so as to extract the post from the earth. The ram is pivotally mounted to the frame so as to be movable between a vertical orientation to an orientation angularly offset from vertical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.