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:
Jun. 04, 2019
Filed:
Nov. 22, 2016
Applicant:
Bell Helicopter Textron Inc., Fort Worth, TX (US);
Inventors:
Dalton T Hampton, Fort Worth, TX (US);
Thomas Clement Parham, Jr., Fort Worth, TX (US);
Assignee:
Bell Helicopter Textron Inc., Fort Worth, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 27/32 (2006.01); B64C 27/35 (2006.01); B64C 27/43 (2006.01); B64C 27/78 (2006.01); B64C 27/82 (2006.01);
U.S. Cl.
CPC ...
B64C 27/43 (2013.01); B64C 27/32 (2013.01); B64C 27/35 (2013.01); B64C 27/78 (2013.01); B64C 27/82 (2013.01);
Abstract
A rotor hub assembly for a rotorcraft includes a yoke forming a bearing bore. The yoke has a teetering axis extending through the bearing bore. The rotor hub assembly includes a flapping bearing disposed in the bearing bore. The flapping bearing is operable to regulate teetering of the yoke about the teetering axis. The rotor hub assembly includes an axial spring abutting the flapping, thereby reducing movement of the flapping bearing along the teetering axis.