Drive assembly for a four wheel drive vehicle, having a disconnectable viscous coupling
US5174408A · kind A · utility
12Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 22, 1990 |
| Grant date | Dec 29, 1992 |
| Priority date | — |
| Expiry date | Oct 22, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D35/005
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A drive assembly for a four wheel drive vehicle, which drive assembly, during forward driving, automatically assumes a freewheeling position if the speed of the dependent wheel axle is higher than that of the permanently driven axle, with the four wheel drive function otherwise being maintained with a reduced driving torque, even during reversing, the drive assembly providing the freewheeling unit with a second viscous coupling which is connected in parallel and whose torque transmitting capacity is smaller than, or equal to, that of the first viscous coupling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.