Patents by Inventor Rolf Dürrstein

Rolf Dürrstein has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of controlling the torque developed at a belt shaft of a belt retractor coupled to an electric motor
    Patent number: 6595453
    Abstract: The torque developed at a belt shaft of a belt retractor coupled to an electric motor via a drive belt is controlled so as to avoid a hysteresis. For this purpose, the direction of rotation of the belt shaft is detected and, depending on the direction of rotation as detected, the electric current supplied to the electric motor is changed from a first value to a second value that is different from the first value by an amount required to compensate for hysteresis.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: July 22, 2003
    Assignee: TRW Automotive Electronics & Components GmbH & Co. KG
    Inventors: Rolf Dürrstein, Cornelius Peter
  • Belt retractor system
    Patent number: 6447012
    Abstract: A belt retractor for an occupant restraint system comprises a frame, a belt reel rotatably mounted in the frame, an electric motor drive coupled to the belt reel, a locking mechanism for selectively blocking the belt reel, and a vehicle-sensitive sensor. The locking mechanism is actuated by an actuator. An electronic control unit is provided with an input interface and an output interface. The vehicle-sensitive sensor is connected to the input interface, and the actuator and the electric motor drive are connected to the output interface.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: September 10, 2002
    Assignee: TRW Automotive Electronics & Components GmbH & Co. KG
    Inventors: Cornelius Peter, Rolf Dürrstein