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:
Apr. 05, 2016
Filed:
Apr. 27, 2012
Applicants:
Stewart T. Thornton, Derby, GB;
Paul Simms, Hathern, GB;
Colin W R Mcfarlane, Milton Keynes, GB;
Inventors:
Assignee:
ROLLS-ROYCE plc, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 11/32 (2006.01); B64C 11/30 (2006.01); B64D 27/00 (2006.01);
U.S. Cl.
CPC ...
B64C 11/306 (2013.01); B64C 11/32 (2013.01); B64D 2027/005 (2013.01); Y02T 50/66 (2013.01);
Abstract
A bladed rotor comprises a rotor bodycarrying blades, whose pitch can be varied by means of a pitch input shaft. The pitch input shaftdrives the respective bladeabout a spanwise axis X of the blade through a harmonic drive reduction gear. The harmonic drive reduction gearcomprises a wave generatorwhich is fixed for rotation on the pitch input shaftand a flex spline which meshes with a circular splineand is secured to the blade