Patents by Inventor Steven R. Gerstner

Steven R. Gerstner 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).

  • Pass through differential
    Patent number: 11525501
    Abstract: Pass-through differentials are described.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: December 13, 2022
    Inventor: Steven R. Gerstner
  • Truck bed lift system and method
    Patent number: 5662453
    Abstract: A truck bed lift system is provided that includes elements for positioning a truck bed at a predetermined height and angle. The system has means for sliding the truck bed relative to the truck frame, means for lifting the truck bed, and means for tilting the truck bed about a pivot point. In addition, elements are provided for retracting a bumper guard so that it does not impede a downward tilting movement of the truck bed. Methods are also provided for transferring an object between a loading platform and the truck bed when the truck frame and the loading platform are noncoplanar.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: September 2, 1997
    Inventors: Steven R. Gerstner, Donald D. Roberts