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:
Dec. 09, 2014
Filed:
Feb. 07, 2013
Applicant:
Rolls-royce Plc, London, GB;
Inventor:
David Roger Coles, Derby, GB;
Assignee:
Rolls-Royce PLC, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H 29/04 (2006.01); F16H 1/28 (2006.01); F01D 17/16 (2006.01); F01D 17/20 (2006.01);
U.S. Cl.
CPC ...
F16H 1/28 (2013.01); F01D 17/162 (2013.01); F01D 17/20 (2013.01); F05D 2260/53 (2013.01);
Abstract
Disclosed is a unison ring assembly. The assembly comprises a first unison ring and a second unison ring concentrically aligned along a principal axis, the first and second unison rings being rotatable about the principal axis. The assembly further comprises a gear mechanism configured to simultaneously rotate the first and second unison rings about the principal axis.