Patent ID: 6422841
Filing Date: 2002-07-23
Classification: F01C

Abstract:
A cat and mouse type device comprising:a housing; a shaft rotatably mounted within the housing; first and second rotors rotatably mounted within the housing, each of the rotors having at least two rotorheads arranged around a perimeter of the rotor, the rotors being mounted within the housing to define an annular volume, with the rotorheads dividing the annular volume into a plurality of chambers, each of the rotors having a groove disposed on a face of the rotor; at least one rod secured to the shaft within the housing; at least one primary gear rotatably mounted to each of the at least one rod; at least one secondary gear mounted within the housing and surrounding the shaft; at least one bar extending away from the at least one primary gear; at least one inlet passage and at least one outlet passage in the housing, each said inlet and outlet passage opening into the annular volume; wherein each of the bars is arranged to ride in one of the rotor grooves and each of the at least one primary gear is meshed with the at least one secondary gear.