Lifting apparatus
US7204535B2 · kind B2 · utility
2Cited by
13References
15Claims
0Family size
Inventor
Key dates
| Filing date | Sep 21, 2004 |
| Grant date | Apr 17, 2007 |
| Priority date | — |
| Expiry date | Feb 3, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H17/265
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Apparatus for gripping and lifting objects such as fence posts. A frame carries a pair of grippers that are slidingly movable along the frame to grasp a post or other object. The grippers may pivot so that the object remains in essentially constant vertical orientation despite arcuate motion of a tractor or other lifting machine by which the frame is lifted. The grippers may be actuated by hydraulic or other power provided by the lifting machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.