Patents by Inventor Larry Simpson

Larry Simpson 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: 10946884
    Abstract: A pneumatic cylinder actuated pallet jack assembly for mechanically lifting and lower a pallet includes a pallet jack, a plurality of pneumatic cylinders, and a compressor. The forks of the pallet jack are slidably coupled to a frame of the pallet jack. Each of a pair of rear rollers that is coupled to a respective fork distal from the frame and a roller module that is slidably coupled to the frame are selectively vertically positionable. A tow bar is pivotally coupled to the frame proximate to the roller module. Pneumatic cylinders are operationally coupled singly to each of the forks, the pair of rear rollers, and to the roller module, and the compressor. The compressor is positioned to selectively actuate respective pneumatic cylinders to size a gap between the forks and to raise the forks and the frame to lift a load that is positioned on the pallet.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: March 16, 2021
    Inventor: Larry Simpson
  • Publication number: 20200398881
    Abstract: A pneumatic cylinder actuated pallet jack assembly for mechanically lifting and lower a pallet includes a pallet jack, a plurality of pneumatic cylinders, and a compressor. The forks of the pallet jack are slidably coupled to a frame of the pallet jack. Each of a pair of rear rollers that is coupled to a respective fork distal from the frame and a roller module that is slidably coupled to the frame are selectively vertically positionable. A tow bar is pivotally coupled to the frame proximate to the roller module. Pneumatic cylinders are operationally coupled singly to each of the forks, the pair of rear rollers, and to the roller module, and the compressor. The compressor is positioned to selectively actuate respective pneumatic cylinders to size a gap between the forks and to raise the forks and the frame to lift a load that is positioned on the pallet.
    Type: Application
    Filed: June 20, 2019
    Publication date: December 24, 2020
    Inventor: Larry Simpson
  • Patent number: D605721
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: December 8, 2009
    Inventors: Larry Simpson, Darci Simpson
  • Patent number: D606150
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: December 15, 2009
    Inventors: Larry Simpson, Darci Simpson