Toyota Jidosha Kogyo Kabushiki Kaisha

Tomozi Ishikawa

Masahisa Ando

Keigo Kato

A power steering device includes a steering shaft assembly, a driven member for operative connection with the steering road wheels for a vehicle and operatively connected with the steering shaft assembly, an hydraulic cylinder of actuating the driven member by fluid under pressure supplied thereto, an hydraulic circuit connecting the cylinder to a source of fluid pressure, and a switching valve having a valve member to be moved in response to rotation of the shaft assembly in an axial direction, the valve disposed within the hydraulic circuit to control the supply of fluid under pressure in response to axial movement of the valve being member. A cam mechanism is associated with the steering shaft assembly to conduct the axial movement of the valve member in response to rotation of the steering shaft assembly.

Growing community of inventors

Toyota, Japan

Tomozi Ishikawa