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. 16, 2021
Filed:
Dec. 20, 2017
Wing Aviation Llc, Mountain View, CA (US);
Giulia Pantalone, San Francisco, CA (US);
Adam Woodworth, San Jose, CA (US);
Eric Teller, Palo Alto, CA (US);
Ealgoo Kim, Cupertino, CA (US);
Jacob Huffman, Cupertino, CA (US);
Martin Kubie, San Francisco, CA (US);
Wing Aviation LLC, Mountain View, CA (US);
Abstract
A technique of controlling tonal noises produced by an unmanned aerial vehicle (UAV) includes generating thrust with a plurality of rotor units mounted to the UAV to propel the UAV into flight. Each of the rotor units includes a bladed rotor. A rotation rate or a phase delay of at least one of the rotor units is adjusted relative to another of the rotor units. The adjustment causes a spread in the tonal noises generated by the rotor units.