Patents by Inventor Christian Liedl

Christian Liedl 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).

  • Controlling current supplied to electric motor of a seat belt retractor
    Patent number: 7180258
    Abstract: A method and a device for adjusting a supply current, which feeds an electric motor, the torque of which is transferred to a belt reel of a seat belt retractor of a motor vehicle, whereby the motor current of the electric motor is measured during the torque generation and compared as a controlled variable with a command variable, which is adjusted depending on at least one driving situation or at least one driving condition of the vehicle, for controlling the supply current for the electric motor situated in the control circuit.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: February 20, 2007
    Assignee: Key Safety Systems, Inc.
    Inventors: Martin Specht, Alexander Heckmayr, Christian Liedl
  • Controlling current supplied to electric motor of a seat belt retractor
    Publication number: 20050083000
    Abstract: A method and a device for adjusting a supply current, which feeds an electric motor, the torque of which is transferred to a belt reel of a seat belt retractor of a motor vehicle, whereby the motor current of the electric motor is measured during the torque generation and compared as a controlled variable with a command variable, which is adjusted depending on at least one driving situation or at least one driving condition of the vehicle, for controlling the supply current for the electric motor situated in the control circuit.
    Type: Application
    Filed: August 4, 2004
    Publication date: April 21, 2005
    Inventors: Martin Specht, Alexander Heckmayr, Christian Liedl
  • Seat belt retractor
    Patent number: 6439494
    Abstract: A seat belt retractor has a belt reel mounted rotatably around a reel axis on a retractor frame and biased by a motive spring. A load limiter is non-rotatably connected to a rotatable spool of the belt reel. A rotor can be coupled to the belt reel and/or its load limiter by a coupling. The coupling is supported against axial displacement on an adapter flange connected rigidly to the retractor frame. The rotor transmits a torque generated by an electric motor.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: August 27, 2002
    Assignee: Breed Automotive Technology, Inc.
    Inventors: Martin Specht, Christian Liedl