Multiple screw jack
US6722635B2 · kind B2 · utility
10Cited by
33References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 2001 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Dec 17, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60S9/08
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A jack includes a motor, a gear assembly operably connected to the motor, a ram, and a plurality of screws driven by the gear assembly to move the ram.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.