Patents by Inventor Arnold Eckard

Arnold Eckard 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).

  • Patent number: 7426423
    Abstract: The invention refers to a crane or excavator for the transaction of a load, which is carried by a load cable with a turning mechanism for the rotation of the crane or excavator, a seesaw mechanism for the erection or incline of an extension arm and a hoisting gear for the lifting or lowering of the load which is carried by a cable with an actuation system. The crane or excavator has, in accordance with the invention, a track control system, whose output values are entered directly or indirectly as input values into the control system for position or speed of the crane or excavator, whereas the set points for the control system in the track control are generated in such a way that a load movement results from it with minimized oscillation amplitudes.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: September 16, 2008
    Assignee: Liebherr-Werk Nenzing—GmbH
    Inventors: Klaus Schneider, Oliver Sawodny, Arnold Eckard