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:
Jun. 25, 2024
Filed:
Oct. 01, 2020
Applicants:
Rolls-royce Plc, London, GB;
Rolls-royce Corporation, Indianapolis, IN (US);
Inventors:
Assignees:
ROLLS-ROYCE plc, London, GB;
ROLLS-ROYCE CORPORATION, Indianapolis, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02C 3/08 (2006.01); B64D 27/10 (2006.01); B64D 41/00 (2006.01); F02C 6/00 (2006.01); H02K 11/33 (2016.01);
U.S. Cl.
CPC ...
B64D 41/00 (2013.01); B64D 27/10 (2013.01); F02C 3/08 (2013.01); F02C 6/00 (2013.01); H02K 11/33 (2016.01); F05D 2220/32 (2013.01); F05D 2220/50 (2013.01);
Abstract
An auxiliary power unit () for an aircraft () comprises a gas turbine engine comprising an engine core (). The engine core comprises a core compressor () and core turbine () coupled by a core shaft (). The auxiliary power unit further comprises a load spool comprising a load compressor (), a load turbine () and a permanent magnet electric machine (), each being coupled by a load shaft (). The load shaft () and core shaft () are configured to rotate independently of one another.