US Patent 11420744 Automated drone-based paint delivery system

An automated drone-based surface treatment material delivery system includes a drone having a body, at least one propeller rotatably supported by the body, at least one propeller motor supported by the body and configured to selectively apply motive power to the at least one propeller, and a controller supported by the body and configured to control a flight path of the drone at least by manipulating a speed of the at least one propeller. The drone also has a rotary atomizer supported by the body for movement therewith. The rotary atomizer includes a rotating dispersion structure configured to disperse a surface treatment material from a material supply.