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:
Oct. 14, 2008
Filed:
Dec. 02, 2005
Applicants:
Nicholas D. Lappos, Stratford, CT (US);
Edward Karedes, Cheshire, CT (US);
Harsh Vinayak, Meriden, CT (US);
Yuriy Gmirya, Woodbridge, CT (US);
Inventors:
Nicholas D. Lappos, Stratford, CT (US);
Edward Karedes, Cheshire, CT (US);
Harsh Vinayak, Meriden, CT (US);
Yuriy Gmirya, Woodbridge, CT (US);
Assignee:
Sikorsky Aircraft Corporation, Stratford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 27/00 (2006.01); B64C 27/08 (2006.01); F16H 15/38 (2006.01); B64D 35/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A gearbox of a rotary-wing aircraft includes at least one variable speed system which optimizes the main rotor speed for different flight regimes such as a hover flight profile and a high speed cruise flight profile for any rotary wing aircraft while maintaining an independently variable tail rotor speed.