Foley & Lardner, Schwartz, Jeffery, Schwaab, Mack, Blumenthal & Evans
Electronically controlled power steering system
 An electronically controlled power steering system comprises a vehicle speed sensor, a steering wheel angle sensor, a power steering gear including a control valve, a bypass valve for regulating a flow rate of hydraulic fluid supplied to the control valve of the power steering gear in response to a control signal generated by a controller. The controller is operative responsive to sensor output signals of the sensors for generating the control signal. With the controller, the control signal is varied in response to the vehicle speed and the steering wheel angle when the steering wheel angle is less than a predetermined value, but this varying tendency of the control signal in response to the steering wheel angle is restrained when the steering wheel angle is not less than the predetermined value. 
Nissan Motor Co., Ltd.
B B
B62D B62D
inventional inventional
Hideo Kenji Masatsugu Satoru
Ito Kawagoe Yokote Ishihara