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:
Feb. 20, 2018
Filed:
Dec. 20, 2013
Applicant:
Bell Helicopter Textron Inc., Fort Worth, TX (US);
Inventors:
Christopher Foskey, Keller, TX (US);
Drew Sutton, Hurst, TX (US);
Frank B. Stamps, Colleyville, TX (US);
Assignee:
Bell Helicopter Textron Inc., Fort Worth, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 27/72 (2006.01); B64C 27/00 (2006.01); B64C 27/35 (2006.01); B64C 27/37 (2006.01);
U.S. Cl.
CPC ...
B64C 27/72 (2013.01); B64C 27/001 (2013.01); B64C 27/35 (2013.01); B64C 27/37 (2013.01); B64C 2027/003 (2013.01); B64C 2027/004 (2013.01); B64C 2027/7216 (2013.01);
Abstract
A rotor hub can include a yoke, a mast, and one or more radially oriented actuators. The first radial actuator and the second radial actuator each have a piston configured to impart a translation of the yoke relative to the mast. The radial actuators are configured to attenuate in-plane whirling vibrations. The rotor hub can also have actuators coupled between the mast and the yoke for attenuating flapping and vertical vibrations.