Jack stand and jack combination and method of elevating a load
US7878482B2 · kind B2 · utility
20Cited by
34References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 15, 2007 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Dec 3, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66F3/30
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A jacking system is disclosed in which a hydraulic jack, having a raisable piston, is used, in combination with a jack stand having a raisable support column, to raise a load. In a preferred embodiment, the support column has two components that may telescope into each other and that may be held in fixed position by two ratchet mechanisms. The jack stand is configured so that, when the hydraulic jack is positioned alongside the jack stand, the piston of the hydraulic jack is able to interact with and raise the support column along with the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.