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:
Jan. 08, 2019
Filed:
Jun. 26, 2014
Applicant:
Sikorsky Aircraft Corporation, Stratford, CT (US);
Inventor:
David A. Darrow, Jr., Stratford, CT (US);
Assignee:
SIKORSKY AIRCRAFT CORPORATION, Stratford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 11/44 (2006.01); B64C 27/82 (2006.01); B64C 27/68 (2006.01); B64C 11/32 (2006.01);
U.S. Cl.
CPC ...
B64C 11/44 (2013.01); B64C 27/68 (2013.01); B64C 27/82 (2013.01); B64C 11/32 (2013.01); B64C 2027/8236 (2013.01);
Abstract
An aircraft is provided and includes a gearbox housing through which a drive shaft configured to drive propeller rotation extends and a pitch control apparatus. The pitch control apparatus includes a drive element coupled to an exterior of the gearbox housing and an annular electro-mechanical actuator (EMA) configured to convert rotational energy generated by the drive element to thereby control a pitching of propeller blades about corresponding pitch axes.