Patents by Inventor Richard L. Ehrhardt

Richard L. Ehrhardt 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: 5807061
    Abstract: An off-highway loading vehicle having a frame, a cab, and a linkage arrangement for operably attaching a work implement to the frame is disclosed. The loading vehicle includes a pair of spaced apart lift arms having a rear end portion pivotally connected to the frame and a forward end portion pivotally connected to the work implement. A lowermost edge of a forward section of the lift arms angles downwardly from a lowermost edge of a rearward section thereof. Thus, the lift arms avoid contact with the frame when in a lowered position to place the work implement adjacent a front end of the frame. In addition, a lifting device acts between the frame and the lift arms to move the lift arms between the lowered position and a raised position.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: September 15, 1998
    Assignee: Case Corporation
    Inventors: James W. Donoghue, Richard L. Ehrhardt, John M. Moffitt