Patents by Inventor Donald P. Rivers

Donald P. Rivers 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).

  • Pneumatic system for the automatic operation of semi-trailer landing gear
    Patent number: 5299829
    Abstract: A pneumatic system for automatically extending or retracting a semi-trailer's landing gear to support, raise or lower the trailer, such system utilizing a pneumatic gear motor attached to the gear reduction box assembly's inboard shaft through a coupling, allowing axial movement of the inboard shaft, such pneumatic gear motor interconnected to dual air lines selectively activated by a landing gear control valve receiving air from a valve disposed on the semi-trailer's air brake line.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: April 5, 1994
    Inventors: Bernard A. Rivers, Jr., Darrell D. Amidon, Bernard A. Rivers, III, Donald P. Rivers