Patents by Inventor Patrick J. Wahlers

Patrick J. Wahlers 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 for controlling a seat suspension system
    Patent number: 5908456
    Abstract: The present invention is adapted to control the motion of a seat 102 located in a seat suspension system 100. The present invention determines a total damping force based on an absolute velocity damping force and a relative velocity damping force. Based on the absolute and relative damping force, a total damping force is determined which will provide a smooth ride for the operator throughout the range of travel of the seat, while prevention collisions with the end stops.
    Type: Grant
    Filed: August 18, 1997
    Date of Patent: June 1, 1999
    Assignee: Caterpillar Inc.
    Inventor: Patrick J. Wahlers