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:
Jul. 26, 2022
Filed:
Mar. 19, 2020
Applicant:
Textron Innovations Inc., Providence, RI (US);
Inventor:
Guy Bernard, Kirkland, CA;
Assignee:
Textron Innovations Inc., Providence, RI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C 27/10 (2006.01); B64C 27/52 (2006.01); B64C 27/80 (2006.01); B64C 13/24 (2006.01); B64C 9/00 (2006.01); B64C 5/06 (2006.01); B64C 29/00 (2006.01);
U.S. Cl.
CPC ...
B64C 27/10 (2013.01); B64C 5/06 (2013.01); B64C 9/00 (2013.01); B64C 13/24 (2013.01); B64C 27/52 (2013.01); B64C 27/80 (2013.01); B64C 29/0033 (2013.01);
Abstract
A coaxial rotor system for a rotorcraft includes a mast, a top rotor assembly and a bottom rotor assembly. The top rotor assembly is coupled to the distal end of the mast. The bottom rotor assembly includes a motor configured to provide rotational energy to the mast, thereby rotating the top rotor assembly. The bottom rotor assembly experiences a torque reaction force responsive to the motor rotating the mast such that the top and bottom rotor assemblies counter rotate.