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. 31, 2016
Filed:
Apr. 25, 2012
Frank B. Stamps, Colleyville, TX (US);
David A. Popelka, Colleyville, TX (US);
Tom Donovan, Fort Worth, TX (US);
Patrick R. Tisdale, Roanoke, TX (US);
Richard E. Rauber, Euless, TX (US);
Frank B. Stamps, Colleyville, TX (US);
David A. Popelka, Colleyville, TX (US);
Tom Donovan, Fort Worth, TX (US);
Patrick R. Tisdale, Roanoke, TX (US);
Richard E. Rauber, Euless, TX (US);
Textron Innovations Inc., Providence, RI (US);
Abstract
An aircraft rotor assembly has upper and lower hub plates adapted to be mounted to a central rotor mast for rotation therewith. A plurality of radial arms is connected to at least two flap bearings mounted between the hub plates and forming a discrete flap hinge, each flap hinge defining a flap axis and allowing rotation of the associated arm relative to the hub plates and about the corresponding flap axis. Each of a plurality of blade grips is rotatably connected to one of the arms for rotation about a pitch axis and adapted for mounting of a blade to each blade grip, such that each blade is capable of rotation with the grip about the pitch axis and capable of rotation together with the corresponding arm relative to the hub plates and about the corresponding flap axis.