Patent ID: 6886528

Claim:
A rotary device, comprising: a housing defining at least one chamber having an epitrochoidal shape defined by two or more partially overlapping circles, wherein each one of the partially overlapping circles intersects a center of an adjacent one of the circles, one or more inlet ports in fluid communication with the chamber, and one or more outlet ports in fluid communication with the chamber; two or more rotors that cooperate to temporarily define one or more compression sub-chambers and one or more suction sub-chambers as the rotors rotate synchronously within the chamber; and a linkage for synchronously rotating the rotors, wherein each one of the rotors has a curved outer side having the same radius, each one of the rotors rotates about a corresponding axis, and the distance between the axes is substantially the same as the radius of the outer sides of the rotors, which in turn is substantially the same as the radius of the circles defining the chamber.