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. 12, 2018
Filed:
Oct. 01, 2014
Applicant:
Agustawestland S.p.a., Rome, IT;
Inventor:
Attilio Colombo, Samarate, IT;
Assignee:
AGUSTAWESTLAND S.P.A., Rome, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 27/00 (2006.01); F01D 25/04 (2006.01); F16F 7/116 (2006.01); F16F 7/10 (2006.01);
U.S. Cl.
CPC ...
F01D 25/04 (2013.01); B64C 27/001 (2013.01); F16F 7/1011 (2013.01); F16F 7/116 (2013.01); B64C 2027/003 (2013.01); B64C 2027/004 (2013.01); B64C 2027/005 (2013.01);
Abstract
A hover aircraft rotor having a hub which rotates about an axis and has a number of blades; a drive shaft connectable to a drive member of the aircraft and connected functionally to the hub to rotate the hub about the axis; and damping means for damping vibration transmitted to the shaft, and which include a mass designed to oscillate, in use, to oppose transmission to the shaft of vibration generated by rotation of the blades; the mass being free to oscillate parallel to the axis, to oppose transmission to the shaft of vibration having main components along the axis.