Patent · US Expired

Rear wheel steering apparatus for vehicle

US5236057A · kind A · utility

5Cited by
6References
12Claims
0Family size

Assignees

Inventors

Key dates

Filing dateSep 4, 1991
Grant dateAug 17, 1993
Priority date
Expiry dateSep 4, 2011

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB62D7/159
  • WIPO fieldTransport
  • WIPO sectorMechanical engineering

Abstract

A rear wheel steering apparatus for a vehicle, comprises a hydraulic cylinder for displacing a steering rod connected to left and right rear wheels axially, a centering spring for biasing the steering rod toward a neutral position, and a centering spring cancelling mechanism for preventing a biasing force of the centering spring from acting on the steering rod. A partition wall of the hydraulic cylinder defines an oil chamber in the cylinder and is formed as a cup shape having a central concave portion which constitutes a pressure chamber of the centering spring cancelling mechanism.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.