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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 11811283 B1

PDFFull Text
Date of Patent:
Nov. 07, 2023

Filed:

Aug. 31, 2020

Electric machines

Applicant:

Rolls-royce Plc, London, GB;

Inventor:

David F. Brookes, Derby, GB;

Assignee:

ROLLS-ROYCE PLC, London, GB;

Attorney:

Oliff PLC

Primary Examiner:

Leda T Pham

Int. Cl.
CPC ...
H02K 3/28 (2006.01); H02K 1/16 (2006.01); H02K 3/14 (2006.01); H02K 3/24 (2006.01); H02K 3/42 (2006.01); H02K 3/493 (2006.01); H02K 15/00 (2006.01); H02K 15/02 (2006.01); H02K 15/085 (2006.01); H02K 15/12 (2006.01); H02K 21/14 (2006.01); H02K 7/18 (2006.01); H02K 9/197 (2006.01);
U.S. Cl.
CPC ...
H02K 3/28 (2013.01); H02K 1/165 (2013.01); H02K 3/14 (2013.01); H02K 3/24 (2013.01); H02K 3/42 (2013.01); H02K 3/493 (2013.01); H02K 7/1823 (2013.01); H02K 9/197 (2013.01); H02K 15/0018 (2013.01); H02K 15/024 (2013.01); H02K 15/085 (2013.01); H02K 15/12 (2013.01); H02K 21/14 (2013.01); H02K 2213/06 (2013.01);
Abstract

A stator for a radial-flux rotary electric machine includes a yoke with a plurality of teeth, each tooth extending from a root at the yoke to a tip. The stator further includes a plurality of coils, each one of which being located on a respective one of the plurality of teeth, the coils being sized such that a slot fill factor is between zero and unity to define axial voids in the slots. The stator further includes a plurality of magnetic sealing members, each one of which being engaged with the tips of adjacent teeth to circumferentially and axially seal the axial voids in the slots for retaining an axial flow of coolant therein, the magnetic sealing members being composed of a magnetic material to provide a flux path between adjacent tooth tips to increase an amount of leakage flux.

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