Steering apparatus for a vehicle of the type having revolving upper body with respect to a lower body thereof
US3990527A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1975 |
| Grant date | Nov 9, 1976 |
| Priority date | — |
| Expiry date | Dec 12, 1995 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F9/225
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A steering apparatus for a vehicle of the type having a revolving upper body with respect to a lower body thereof in which a directional control valve is provided in a hydraulic circuit to maintain the same steering control when upper body of the vehicle is rotated to 180.degree.. The apparatus comprising a pair of valves for steering, a pair of steering pedal connected to said pair of valves, a directional control valve connected to said pair of valves through hydraulic conduits for right and left steering, a cam provided at around revolving center of the lower body of the vehicle, a switch connected to the directional control valve and, a rocking lever provided on the upper body of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.