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:
Mar. 08, 2022
Filed:
Jul. 20, 2018
Flir Unmanned Aerial Systems As, Hvalstad, NO;
Petter Muren, Nesbru, NO;
Trygve Frederik Marton, Slependen, NO;
Ivar Johnsrud, Honefoss, NO;
Pal Hagh Sandberg, Hvalsted, NO;
Christian Moengen, Spikkestad Buskerud, NO;
Jo Eyvin Bjaarstad, Vettre Akershus, NO;
FLIR Unmanned Aerial Systems AS, Hvalsted, NO;
Abstract
Embodiments disclosed herein present a spring system for use in a torque dependent rotor assembly designed to operate in resonance, where changes in applied torque controls the blade pitch angle and ultimately the movements of a rotary wing aircraft. More specifically, the present invention relates to a spring system used in such a rotor assembly where the stiffness of an associated spring member is allowed to vary in response to the torque applied from a motor to the assembly.