Four-wheel-drive vehicle having a torque transmission coupling for always transmitting the torque
US4938306A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1987 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Apr 17, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19991
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A full time-four-wheel-drive vehicle in which front and rear wheels are always connected to each other through a torque transmission coupling includes an engine; a transmission, a first differential which is driven through the transmission to drive one of a front and a rear wheel systems; a second differential which is drivingly connected to the other of the systems; and a torque transmission coupling which includes an input shaft which is drivingly connected to the transmission and the first differential, an output shaft which is drivingly connected to the second differential, an oil pump which is driven by the relative rotation between the input shaft and the output shaft to generate oil pressure corresponding to the speed of the relative rotation, and a friction clutch mechanism which engages the input shaft and the output shafts with each other by the oil pressure generated by the oil pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.