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, 2019
Filed:
Sep. 17, 2015
Rolls-royce North American Technologies, Inc., Indianapolis, IN (US);
Rolls-royce Corporation, Indianapolis, IN (US);
Andrew J. Eifert, Indianapolis, IN (US);
Craig E. Heathco, Greenwood, IN (US);
Robert W. Cedoz, Indianapolis, IN (US);
Robert T. Duge, Carmel, IN (US);
Rolls-Royce North American Technologies Inc., Indianapolis, IN (US);
Rolls-Royce Corporation, Indianapolis, IN (US);
Abstract
A gas turbine engine including a compressor, a turbine, and a variable-ratio unit is disclosed. The turbine is coupled to the compressor to drive rotation of multiple stages of the compressor. The variable-ratio unit is configured to transmit rotational power from the turbine to at least one stage of the compressor to drive rotation of the at least one stage of the compressor.