Patents by Inventor Bernd Lehnen

Bernd Lehnen 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).

  • Material transloading equipment
    Patent number: 7163112
    Abstract: The invention concerns a material transloading equipment unit with an undercarriage and a turntable connected with this undercarriage by means of a track ring, on which an arm that can be pivoted by means of at least one hoisting cylinder is pivot-mounted. According to the invention, on the one hand at least one additional pivot point for the arm is provided on the turntable and/or on the boom foot, and at least one additional pivot point is provided in the arm or in a pivot plate on the arm. This allows a number of possible combinations for the kinematics of the arm.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: January 16, 2007
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Bernd Lehnen, Bernd Wager
  • Material transloading equiptment
    Publication number: 20030234233
    Abstract: The invention concerns a material transloading equipment unit with an undercarriage and a turntable connected with this undercarriage by means of a track ring, on which an arm that can be pivoted by means of at least one hoisting cylinder is pivot-mounted. According to the invention, on the one hand at least one additional pivot point for the arm is provided on the turntable and/or on the boom foot, and at least one additional pivot point is provided in the arm or in a pivot plate on the arm. This allows a number of possible combinations for the kinematics of the arm.
    Type: Application
    Filed: January 17, 2003
    Publication date: December 25, 2003
    Inventors: Bernd Lehnen, Bernd Wager