Patents by Inventor Robert Grisar

Robert Grisar 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).

  • Prime movers, pumps and compressors having reciprocating vane actuator assemblies and methods
    Patent number: 11085300
    Abstract: Prime movers are provided that can include: a fixed member in operational relationship to a rotating member; a reciprocating vane assembly operationally engaged with the rotating member; and a track member about the rotating member and engaging the reciprocating vane assembly. Engines are provided that can include: a stator in operational relationship to a rotor; a reciprocating vane assembly operationally engaged with the rotor; and a track member about the rotor and engaging the reciprocating vane assembly. Processes for powering a prime mover are also provided, the processes can include engaging vanes between a fixed member and rotating member to create compression and expansion zones, the engaging comprising guiding the vanes from a track member about the rotating member.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: August 10, 2021
    Assignee: Regi U.S., Inc.
    Inventors: Robert Grisar, Allen MacKnight, Paul Porter
  • Rotary device with reciprocating vanes and seals therefor
    Patent number: 7896630
    Abstract: A rotary device comprises a stator and a rotor. The stator has a cam surface. The rotor has a sleeve and a hub. There is a plurality of vanes reciprocatingly mounted on the rotor. There is a plurality of first longitudinal edge seals disposed on the sleeve. The first longitudinal edge seals each seal at least a portion of a first longitudinal edge of one of the vanes against the sleeve. There is a plurality of second longitudinal edge seals disposed on the hub. The second longitudinal edge seals each seal at least a portion of a second longitudinal edge of one of the vanes against the hub. There is a plurality of end edge seals. The end edge seals each seal a respective end edge of one of the vanes against the cam surface. The end edge seals each are in sealing engagement with respective ones of the first and second longitudinal edge seals.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: March 1, 2011
    Assignee: REGI U.S., Inc.
    Inventors: Robert Grisar, Kim Luckner, Denis Sankovic
  • Rotary device
    Publication number: 20080136113
    Abstract: A rotary device comprises a stator and a rotor. The stator has a cam surface. The rotor has a sleeve and a hub. There is a plurality of vanes reciprocatingly mounted on the rotor. There is a plurality of first longitudinal edge seals disposed on the sleeve. The first longitudinal edge seals each seal at least a portion of a first longitudinal edge of one of the vanes against the sleeve. There is a plurality of second longitudinal edge seals disposed on the hub. The second longitudinal edge seals each seal at least a portion of a second longitudinal edge of one of the vanes against the hub. There is a plurality of end edge seals. The end edge seals each seal a respective end edge of one of the vanes against the cam surface. The end edge seals each are in sealing engagement with respective ones of the first and second longitudinal edge seals.
    Type: Application
    Filed: February 13, 2007
    Publication date: June 12, 2008
    Inventors: Robert Grisar, Kim Luckner, Denis Sankovic
  • Computerized tomographic scanner control keyboard
    Patent number: D324104
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: February 18, 1992
    Assignee: Picker International Inc.
    Inventors: Robert A. Cecil, Nicholas C. Wislocki, Robert Grisar