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:
Nov. 09, 2010
Filed:
Aug. 27, 2004
Frank B. Stamps, Colleyville, TX (US);
Michael R. Smith, Colleyville, TX (US);
Christopher M. Bothwell, Grapevine, TX (US);
Lawrence M. Corso, Keller, TX (US);
James L. Braswell, Jr., Colleyville, TX (US);
David A. Popelka, Colleyville, TX (US);
Ernst C. Schellhase, Benbrook, TX (US);
Charles L. Hollimon, North Richland Hills, TX (US);
Thomas J. Newman, Midlothian, TX (US);
Bryan Baskin, Arlington, TX (US);
Thomas C. Campbell, Keller, TX (US);
Daniel B. Robertson, Southlake, TX (US);
Frank B. Stamps, Colleyville, TX (US);
Michael R. Smith, Colleyville, TX (US);
Christopher M. Bothwell, Grapevine, TX (US);
Lawrence M. Corso, Keller, TX (US);
James L. Braswell, Jr., Colleyville, TX (US);
David A. Popelka, Colleyville, TX (US);
Ernst C. Schellhase, Benbrook, TX (US);
Charles L. Hollimon, North Richland Hills, TX (US);
Thomas J. Newman, Midlothian, TX (US);
Bryan Baskin, Arlington, TX (US);
Thomas C. Campbell, Keller, TX (US);
Daniel B. Robertson, Southlake, TX (US);
Bell Helicopter Textron Inc., Fort Worth, TX (US);
Abstract
A rotor hub assembly for a rotary-wing aircraft has a central member and a plurality of blade grips adapted for attaching rotor blades to the central member. The blade grips are pivotally attached to the central member and are capable of pivoting about a pivot axis generally normal to a plane of rotation of the blades. The pivoting allows for in-plane motion of the blades relative to the central member. A damper is operably connected to each blade grip for damping the in-plane motion of the associated blade, each damper being selectively switchable between at least two spring rates.