Patents Examined by Roderick Steele
  • Electrohydraulic power steering system for a motor vehicle
    Patent number: 5995890
    Abstract: A motor vehicle power steering system includes a hydraulic pump, an electric motor for driving the pump, and a control unit for controlling the electric motor. The control unit includes means for controlling the power supply voltage applied to the electric motor so that said voltage increases up to a maximum value when the load impedance decreases from its unloaded value, and is at a low value when said load impedance is in the vicinity of its unloaded value.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: November 30, 1999
    Assignee: Valeo Electronique
    Inventor: Alfred Permuy