Shapiro and Shapiro
Rear wheel steering apparatus for vehicle
 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. 
Mazda Motor Corporation NSK Ltd.
B B B
B62D B62D B62D
inventional inventional inventional
Hiroyuki Shin Ryuya Isamu Hiroshi Hiroshi
Ito Takehara Akita Chikuma Ohmura Eda