Patents by Inventor William A. Ruthven

William A. Ruthven 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).

  • Hydrolic fluid-lubricated piston-combustion engine
    Patent number: 4403474
    Abstract: In a preferred embodiment, for a turbine driven by hydraulic fluid, the combustion cylinder's piston is lubricated by the hydraulic fluid and drives the hydraulic fluid, and during the driven movement of the piston, movement of that piston causes the return reciprocal movement of another piston of another hydraulic combustion cylinder, and a starter motor is connected to drive both the turbine and the reciprocatable pistons.
    Type: Grant
    Filed: April 13, 1981
    Date of Patent: September 13, 1983
    Inventor: William A. Ruthven