Steering apparatus with plural motors
US7389849B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 2005 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Jul 15, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D7/09
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An apparatus (10) for use in turning steerable vehicle wheels (12, 14) includes first and second piston and cylinder type hydraulic motors (32, 34) which are connected with a central portion of a vehicle. A steering control valve (24) is operable in response to manual rotation of a steering wheel (18) to effect extension and contraction of the first and second hydraulic motors. A rack and pinion steering gear (110, 114) may be connected with a piston rod (86) of one of the hydraulic motors (32). A secondary control valve (200) may be provided to effect operation of one of the hydraulic motors to a greater extent than the other hydraulic motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.