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:
Oct. 22, 2024
Filed:
Feb. 14, 2022
Applicant:
Rolls-royce Electrical Norway As, Trøndelag, NO;
Inventor:
Jørg Høyland, Trondheim, NO;
Assignee:
ROLLS-ROYCE ELECTRICAL NORWAY AS, Trondheim, NO;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 5/02 (2006.01); B32B 5/12 (2006.01);
U.S. Cl.
CPC ...
H02K 5/02 (2013.01); B32B 5/12 (2013.01); B32B 2260/023 (2013.01); B32B 2260/046 (2013.01); B32B 2262/106 (2013.01); B32B 2307/52 (2013.01); B32B 2307/546 (2013.01); B32B 2307/732 (2013.01); B32B 2457/00 (2013.01); H02K 2213/03 (2013.01);
Abstract
An electric machine comprising a stator (), a rotor () radially inward of the stator and comprising a plurality of surface permanent magnets () and a rotor sleeve () surrounding the rotor. The rotor sleeve comprises a plurality of layers of fibre reinforced matrix material (). The rotor sleeve defines a rotor sleeve radius to radial thickness ratio (r:t) between 20 and 40, and the electric machine has a maximum rotor rotational speed greater than 15000 RPM.