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US 6,247,906 B1Granted
Combined pump and motor device
OwnerJoseph M. Pijanowskiinventor
Life of this patent
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Abstract
A compact, electronically operated, rotary positive displacement pumping device having a stator which functions as an electric motor stator and also as pump stator, a rotor or rotors which function as electric motor rotor or rotors and also as pump rotor or rotors, and a highly efficient and effective magnetic flux path which has low reluctance, said flux path being used in a magnetic drive arrangement to impart rotation to the rotor or rotors to create a pumping action.
Claims11
An electronically operated pump for creating a pumping action comprising:
- a stator having an inner wall defining an aperture;
- opposing endplates made of a non-magnetic material which are affixed to said stator and enclose said aperture to form a chamber;
- a plurality of stator poles located in said stator;
- each of said stator poles having a winding which forms a plurality of windings, said windings separated from said stator poles by a non-magnetic material and adapted to selectively energize said stator poles with a reverse or forward polarity;
- a rotor having a plurality of rotor poles and a plurality of vanes;
- said rotor located off center in said aperture;
- and
- an electronic control adapted to selectively energize said windings to create at least one magnetic flux, said flux passes through a forward polarity stator pole, two rotor poles, a reverse polarity stator pole and said stator whereby said rotor poles are attracted to said energized stator poles to create rotation of said rotor and said vanes whereby a pumping action is created.
5 more elements
Dependencies are inferred from the claim text.