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:
Aug. 15, 2023
Filed:
Jan. 03, 2022
Textron Innovations Inc., Providence, RI (US);
Frank Bradley Stamps, Colleyville, TX (US);
David Heverly, Arlington, TX (US);
Michael R. Smith, Colleyville, TX (US);
Michael Scott Seifert, Southlake, TX (US);
Thomas C Parham, Jr., Colleyville, TX (US);
Gary Miller, North Richland Hills, TX (US);
Jouyoung Jason Choi, Southlake, TX (US);
Richard E. Rauber, Colleyville, TX (US);
Textron Innovations Inc., Providence, RI (US);
Abstract
A vibration attenuator is configured for use on an aircraft rotor rotatable about a mast axis and has upper and lower weight assemblies, each comprising a weight with a center of gravity being a radial distance from the mast axis. The weight assemblies are configured for rotation together relative to the rotor at a selected angular rate about the mast axis, the weights being located on opposing sides of the mast axis. A first motor is configured for selective translation of one of the weight assemblies relative to the other weight assembly along the mast axis between a minimum-moment configuration, in which the centers of gravity of the weights revolve about the mast axis in the same plane, and a maximum-moment configuration, in which the centers of gravity of the weights revolve about the mast axis in different planes for producing a whirling moment about the mast axis.