US 12,377,970 B2
Flight device with first main rotor and second main rotor arranged below sub-rotor
Mitsuru Ishikawa, Ota (JP); and Takahito Sekita, Ota (JP)
Assigned to ISHIKAWA ENERGY RESEARCH CO., LTD., Ota (JP)
Appl. No. 18/683,158
Filed by ISHIKAWA ENERGY RESEARCH CO., LTD., Ota (JP)
PCT Filed Oct. 6, 2022, PCT No. PCT/JP2022/037466
§ 371(c)(1), (2) Date Feb. 12, 2024,
PCT Pub. No. WO2023/079900, PCT Pub. Date May 11, 2023.
Claims priority of application No. 2021-182053 (JP), filed on Nov. 8, 2021.
Prior Publication US 2024/0343423 A1, Oct. 17, 2024
Int. Cl. B64U 50/10 (2023.01); B64U 10/16 (2023.01)
CPC B64U 50/10 (2023.01) [B64U 10/16 (2023.01)] 6 Claims
OG exemplary drawing
 
1. A flight device comprising:
an airframe;
an engine;
a motor;
a main rotor; and
a sub-rotor, wherein
the engine rotates the main rotor,
the motor rotates the sub-rotor, and
the main rotor is arranged below the sub-rotor, the main rotor includes a first main rotor and a second main rotor,
the first main rotor is arranged at a position not overlapping the airframe, on a left side of the airframe, and
the second main rotor is arranged at a position not overlapping the airframe, on a right side of the airframe.