Patent ID: 8182235
Filing Date: 2012-05-22
Classification: F04C,F16H,Y10T

Abstract:
1. A multi-drive fluid pump comprising a pump housing, an inlet port, an outlet port, a primary pump gear, a secondary pump gear, a first internal mechanical drive mechanism coupled to the primary pump gear, a second internal mechanical drive mechanism coupled to the secondary pump gear and an internal electro-magnetic drive mechanism also coupled to the secondary pump gear, wherein: the pump housing defines an internal volume fluidly coupled to the inlet port and the outlet port; the primary pump gear and the secondary pump gear are positioned in the internal volume of the pump housing such that rotation of either of the primary pump gear or the secondary pump gear causes relative rotation of the other, wherein the rotation of the primary pump gear and the secondary pump gear is operable to draw fluid into the inlet port and expel the fluid from the outlet port; the primary pump gear is operable to be rotated by the first internal mechanical drive mechanism; and the secondary pump gear is operable to be rotated by both the second internal mechanical drive mechanism and the internal electro-magnetic drive mechanism.