Patent ID: 7682139

Claim:
A motor, comprising: a female rotor shaft having mounted thereon a female compression rotor, a female power rotor, and a spur gear; a male rotor shaft having mounted thereon a male compression rotor, a male power rotor and a power rotor gear; and a housing having, in order, a front housing plate, a compression rotor case, an isolator plate, a power rotor case, a rear housing plate, each rotatably receiving therein said female rotor shaft and said male rotor shaft, said housing also having a gear cover adjacent said rear housing plate; wherein said female compression rotor and said male compression rotor are rotatably mounted, and drivingly connected to one another, within a female compression rotor cavity and a male compression rotor cavity, respectively, within said compression rotor case; wherein said female power rotor and said male power rotor are rotatably mounted, and drivingly connected to one another, within a female power rotor cavity and a male power rotor cavity, respectively, within said power rotor case; wherein said spur gear and said power rotor gear are rotatably mounted, and drivingly connected to one another, within said gear cover.