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.:

US 10811945 B1

Date of Patent:

Oct. 20, 2020

Filed:

Aug. 25, 2017

Permanent magnet machine including ferromagnetic components for external field weakening and method of constructing

Applicant:

Schaeffler Technologies Ag & Co. KG, Herzogenaurach, DE;

Inventors:

Md. Wasi Uddin, Akron, OH (US);

Gregory Heeke, Wosster, OH (US);

Assignee:

Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;

Attorney:

Davidson, Davidson & Kappel, LLC

Primary Examiner:

Emily P Pham

Int. Cl.

CPC ...

H02K 21/02 (2006.01); H02K 15/03 (2006.01); H02K 1/27 (2006.01); H02K 5/10 (2006.01);

U.S. Cl.

CPC ...

H02K 21/028 (2013.01); H02K 1/272 (2013.01); H02K 1/278 (2013.01); H02K 15/03 (2013.01); H02K 21/029 (2013.01); H02K 5/10 (2013.01);

Abstract

The permanent magnet machine includes a stator, a rotor inside the stator and a ferromagnetic component fixed axially movably to the rotor. The ferromagnetic component is configured for actuating axially toward the rotor to weaken a magnetic field of the rotor. The method of constructing a permanent magnet machine includes providing a stator and a rotor inside the stator; and axially movably fixing a ferromagnetic component to the rotor such that the ferromagnetic component is configured for actuating axially toward the rotor to weaken a magnetic field of the rotor.

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