Vehicle four wheel steering system
US4732231A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 11, 1986 |
| Grant date | Mar 22, 1988 |
| Priority date | — |
| Expiry date | Aug 11, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D7/1536
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle four wheel steering system including a rear wheel steering mechanism with a power assist device. The rear wheel steering mechanism includes a steering rod extending transversely of the vehicle and having the opposite ends connected with tie rods which are in turn connected with knuckle arms of the rear wheels. The steering rod is provided with a power cylinder in which a piston is slidably disposed. The piston is provided on the steering rod and defines hydraulic chambers in the cylinder. A control valve is provided to control hydraulic oil supply to the power cylinder. The control valve has a casing which is connected with the steering rod through an interconnecting section and hydraulic oil passages are formed in the interconnecting section for passing hydraulic oil to and from the power cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.