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:
May. 23, 2017
Filed:
Mar. 14, 2013
Applicant:
Bell Helicopter Textron Inc., Fort Worth, TX (US);
Inventors:
Assignee:
Bell Helicopter Textron Inc., Fort Worth, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 27/00 (2006.01); B64C 27/80 (2006.01); B64C 27/52 (2006.01); B64C 27/10 (2006.01); B64C 27/32 (2006.01); B64C 27/35 (2006.01); B64C 27/48 (2006.01); B64C 11/02 (2006.01); B64C 11/48 (2006.01); B64C 27/51 (2006.01);
U.S. Cl.
CPC ...
B64C 27/80 (2013.01); B64C 11/02 (2013.01); B64C 11/48 (2013.01); B64C 27/10 (2013.01); B64C 27/322 (2013.01); B64C 27/35 (2013.01); B64C 27/48 (2013.01); B64C 27/51 (2013.01); B64C 27/52 (2013.01);
Abstract
A rotor assembly includes a yoke operably associated with a rotor blade. The yoke includes a first device and a second device that attach the rotor blade to the yoke. The first device is configured to allow transverse movement of the rotor blade about a chord axis and rotational movement about a pitch-change axis. The second device is configured to allow rotational movement of the rotor blade solely about the pitch-change axis. The method includes rotating rotor assembly about a first plane of rotation, while retaining a relatively stiff out-of-plane rotation and a relatively soft in-plane rotation during flight.