Drive device
US5256109A · kind A · utility
6Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1992 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Dec 9, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B1/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention concerns a drive device (7) with variable transmission ratio for driving an auxiliary aggregate of a motor vehicle. A belt pulley (11) of the drive device (7) has a chamber (38) connected to a reservoir (30) of a hydraulic medium. The centrifugal action of the hydraulic medium contained in the chamber (38) is used to change the speed of the driven shaft (13). By applying a supporting pressure to the chamber (38), it is possible additionally to vary the output speed of the drive device (7).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.