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:
Oct. 04, 2011
Filed:
Aug. 17, 2006
Frank B. Stamps, Colleyville, TX (US);
Richard Rauber, Arlington, TX (US);
David Popelka, Colleyville, TX (US);
Pat Tisdale, Roanoke, TX (US);
Tom Campbell, Keller, TX (US);
James Lee Braswell, Jr., Colleyville, TX (US);
Frank B. Stamps, Colleyville, TX (US);
Richard Rauber, Arlington, TX (US);
David Popelka, Colleyville, TX (US);
Pat Tisdale, Roanoke, TX (US);
Tom Campbell, Keller, TX (US);
James Lee Braswell, Jr., Colleyville, TX (US);
Textron Innovations Inc., Providence, RI (US);
Abstract
A torque coupling for a rotor head of a rotary-wing aircraft is configured for rotation with a mast and for causing rotation of an attached yoke. The coupling has trunnions that rotate with the mast and extend generally radially. Pad-bearing assemblies each have a central member coupled to one of the trunnions with a laminated spherical bearing and have laminated pad bearings affixed to opposing sides of the central member. The laminated bearings have alternating rigid and elastomeric layers. A bearing mount is affixed to each pad bearing and is connected to a yoke for rotating the yoke with the mast. The pad-bearing assemblies allow for relative motion between each central member and the associated trunnion and between each central member and the bearing mounts through elastic shear deformation, and this allows for gimballing of the attached yoke relative to the mast.