Patents by Inventor Randall R. Geiser

Randall R. Geiser 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).

  • Spline drive and cam shafts for barrel engines
    Patent number: 7600493
    Abstract: A shaft assembly for a barrel internal combustion engine having valves controlling the intake and exhaust of gases during operation of the engine. The shaft assembly includes a drive shaft and a cam shaft. The drive shaft extends longitudinally between opposite first and second ends along a rotational axis. The cam shaft has cam lobes for actuating the valves of the engine. The cam shaft is coupled in a spline arrangement with an end of the drive shaft for rotation therewith about the rotational axis. The cam shaft is substantially coaxial with the drive shaft.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: October 13, 2009
    Assignee: Thomas Engine Company, LLC
    Inventor: Randall R. Geiser