US 12,404,911 B1
Turboshaft engine powered quadrotor drone
Samanth Mottera Srinivas, Bengaluru (IN)
Filed by Samanth Mottera Srinivas, Bengaluru (IN)
Filed on Dec. 6, 2024, as Appl. No. 18/971,626.
Int. Cl. B64U 10/14 (2023.01); F16H 1/22 (2006.01); F16H 55/36 (2006.01); F16H 57/02 (2012.01)
CPC F16H 1/222 (2013.01) [B64U 10/14 (2023.01); F16H 55/36 (2013.01); F16H 2057/02043 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A multirotor drone, comprising:
a body;
an engine to generate rotational movement;
a plurality of rotors coupled to the body, the plurality of rotors comprising a first set of rotors comprising a left rotor and a right rotor, and a second set of rotors comprising a front rotor and a rear rotor;
a plurality of shaft pulleys comprising a first set of shaft pulleys and a second set of shaft pulleys;
a plurality of transmission belts;
a gearbox assembly comprising,
a first gear and a second gear, the first gear and the second gear are configured to be counter-rotating;
a first shaft and a second shaft, wherein the first shaft and the second shaft are configured to be counter-rotating;
the first shaft connected to a first center of the first gear, and the second shaft connected to a second center of the second gear;
the first set of shaft pulleys attached to the first shaft, and the second set of shaft pulleys attached to the second shaft;
wherein the rotational movement is transferred from the first shaft through the first set of shaft pulleys and the plurality of transmission belts to the first set of rotors, and wherein the rotational movement is transferred from the second shaft through the second set of shaft pulleys and the plurality of transmission belts to the second set of rotors;
wherein the plurality of transmission belts comprises a front-rotor belt, a rear-rotor belt, a primary left-rotor belt, a secondary left-rotor belt, a primary right-rotor belt, a secondary right-rotor belt;
wherein the front-rotor belt and the rear-rotor belt transfer rotational movement from the second set of shaft pulleys to the front rotor and the rear rotor;
wherein the primary left-rotor belt transfers rotational movement to a set of left-rotor idlers, and the secondary left-rotor belt transfers rotational movement from the set of left-rotor idlers to the left rotor;
wherein the primary right-rotor belt transfers rotational movement to a set of right-rotor idlers, and the secondary right-rotor belt transfers rotational movement from the set of right-rotor idlers to the right rotor; and
the engine is coupled to the gearbox assembly such that the rotational movement of the engine is transferred from the engine to the first shaft and the second shaft through the first gear and the second gear respectively, and from the first shaft and the second shaft to the plurality of the rotors through the plurality of pulleys and the plurality of transmission belts.