Patents Assigned to Cir-Com Development Corp.
  • Circular rotary engine
    Patent number: 5036809
    Abstract: A circular rotary engine comprises a housing having spaced concentric cylindrical walls defining an annulus therebetween with intake and exhaust ports through the sides of the walls and a cylindrical rotary piston ring having multiple symmetrically undulating surfaces on both ends and coaxial interior and exterior gears for shaft drive which rotates within the annulus while reciprocating between end ring members positioned within the annulus and secured at each end of the interior and exterior walls.
    Type: Grant
    Filed: September 13, 1989
    Date of Patent: August 6, 1991
    Assignee: Cir-Com Development Corp.
    Inventor: William A. Goodman