Patents Assigned to Leibherr Hydraulikbagger GmbH
  • Building machine, particularly an excavator
    Patent number: 4152004
    Abstract: In a wheeled vehicle such as an excavator, a pivotable axle for two of the wheels can be locked against pivoting by means of two blocking cylinders each of which is controlled by its own valve. Each valve is closed by venting a control conduit and applying a valve member against a seating, the valve member being subjected to the action of a return spring.
    Type: Grant
    Filed: June 2, 1977
    Date of Patent: May 1, 1979
    Assignee: Leibherr Hydraulikbagger GmbH
    Inventor: Klaus D. Schroder