Patent ID: 7866937

Claim:
A method of pumping gaseous matter comprising: providing a pump rotor having a center axis, an intake port, an exhaust port, and a gas passageway, the gas passageway operatively connecting the intake port to the exhaust port, the exhaust port being radially farther from the center axis than is the intake port; providing a stator having a chamber that is in gaseous communication with the exhaust port of the pump rotor; and rotationally driving the pump rotor about the center axis relative to the stator in a manner causing gaseous matter to enter the gas passageway of the pump rotor via the intake port, to gain energy, and to move radially away from the center axis and out of the exhaust port into the chamber of the stator, the gaseous matter having a supersonic velocity relative to the stator and a subsonic velocity relative to the exhaust port upon exiting the exhaust port.