Rear wheel steering mechanism with locking control for four-wheel-steerable vehicle
US5096014A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1989 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | Apr 4, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D7/148
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A four-wheel-steering system includes a rear wheel steering mechanism for turning rear wheels in response to energization of an actuator. A locking device is responsive to de-energization of the actuator for locking gears and a rack shaft to prevent the rear wheels from being turned. The locking device includes a longer arm on which first and second gears are rotatably mounted, a shorter arm pivotally coupled to the longer arm, a stopper coupled to the shorter arm and engageable with the second gear, and a spring acting on the stopper for normally urging the stopper into engagement with the second gear, the actuator comprising an electric motor angularly movable with respect to the second gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.