Patents by Inventor Larry J. Hubbard

Larry J. Hubbard 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).

  • Self contained compressed air system
    Patent number: 6311797
    Abstract: A self-contained compressed air system comprising a modified Wankel engine for driving various vehicles, mining gear boxes, pumping oil and water in oil fields and industrial plants, electrical power generators, and specifically, a 5-speed transmission for a front wheel drive vehicle. The compressor engine does not require electrical ignition and water-cooled components.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: November 6, 2001
    Inventor: Larry J. Hubbard