Power transfer device for four-wheel drive
US4802383A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1987 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | May 22, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K17/3465
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A power transfer device for four-wheel drive includes a center differential of the bevel gear type arranged to split the driving torque from a power transmission into two torque delivery paths respectively for front-wheel drive and rear-wheel drive, a front-drive differential of the bevel gear type arranged coaxially with the center differential at one side thereof to transfer the split driving torque from a side gear of the center differential to front-wheel axles, an output gear for rear-wheel drive arranged coaxially with the center differential at the other side thereof to transfer the split driving torque from another side gear of the center differential to rear-wheel axles, and a limited-slip differential in the form of a viscous coupling assembled with a mounting case for the output gear to effect limited-slip torque proportional to the difference in rotational speed between the side gears. In the transfer device, a clutch mechanism is arranged between the center differential and the mounting case for the output gear to selectively render the limited-slip differential inoperative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.