The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 2014
Filed:
Feb. 26, 2010
Behrend Goswin Schlenhoff, Hamburg, DE;
Axel Helmut Tank-langenau, Remmels, DE;
Charles James Powers, Westminster, MD (US);
Thomas Albers, Ahrensburg, DE;
Behrend Goswin Schlenhoff, Hamburg, DE;
Axel Helmut Tank-Langenau, Remmels, DE;
Charles James Powers, Westminster, MD (US);
Thomas Albers, Ahrensburg, DE;
Flowserve Management Company, Irving, TX (US);
Abstract
A multistage electric motor includes a plurality of motor stages connected in series, each motor stage comprising a stator, and a rotor; a plurality of cooling fluid paths, each cooling fluid path forming a recirculating loop independent of the other cooling fluid paths, each cooling fluid path in communication with the stator of one of motor stages; and a cooling fluid flowing through each cooling fluid path, the cooling fluid removing heat from the stator of each motor stage. A submersible pump including the multistage electric motor, and a method of cooling the multistage electric motor are also described.