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, 2021
Filed:
Apr. 02, 2021
IN Heon Kim, Seoul, KR;
In Heon Kim, Seoul, KR;
Other;
Abstract
The present invention provides a drone comprising: a drone body; main rotors generating a driving force; sub-rotors generating a driving force instead of the main rotor above and below the main rotor, respectively; connection frames connecting the sub-rotors to the drone body above and below the main rotor, respectively; a detector detecting failure of the main rotors; and a controller controlling the sub-rotors to generate a driving force when detecting failure of the main rotor, wherein the connection frame is rotatably connected to the drone body, rotates, and moves the sub-rotor; wherein each connection frame comprises a rotation frame protruded upward or downward from the drone body and rotatably connected to the drone body; a horizontal frame horizontally connecting the sub-rotor to the rotation frame, and a balance weight protruded from the rotation frame in an opposite direction to the horizontal frame.