Steering arrangement
US5285867A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1991 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | Jul 1, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/043
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The handwheel of a vehicle is connected to a handwheel shaft which in turn is connected through a load torque isolating device (overrunning clutch) that acts in either of the two directions of rotation and is connected to a steering shaft that controls a hydraulic arrangement. The hydraulic arrangement controls a steering motor that in turn controls the direction of turning of the vehicle. A second motor is drivingly connected to the overrunning clutch to rotate the steering shaft when the second motor is operated but when the steering is controlled by the handwheel, movement of the second motor is prevented. The second motor is operable from a location remote from the vehicle. The overrunning clutch includes a hub connected to the steering shaft and is movable by the handwheel shaft, the hub being wedgable against the clutch housing for being driven by the second motor by two jamming rollers that each acts in one direction of rotation and can be released by rotating the handwheel shaft. In one embodiment, the load torque isolating device may be arranged between a planetary gear and the steering handwheel shaft arrangement. Sensors and a control circuit may be arranged to achieved …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.