Payload release apparatus

1. A payload delivery system for selectively releasing the payload from a drone-based delivery system, comprising:

a payload container lid;

a payload container comprising one or more external walls, enclosing a volume inside the payload container, the payload container having a plurality of latches pivotally affixed to the external walls and outside the enclosed volume, wherein the latches comprise grooves sized to selectively engage the payload container lid, wherein inside surfaces of the grooves wrap around portions of the payload container lid reaching a top surface of the payload container lid external to the enclosed volume and pulling the payload container lid toward the payload container; and

a plurality of actuators attached to the payload container lid on the top surface external to the enclosed volume, wherein the plurality of actuators are configured to disengage the latches from the payload container lid.

2. The payload delivery system of claim 1 , wherein the latches are fully engaged with the payload container lid in a latched configuration, and wherein the latches are fully disengaged from the payload container lid in an unlatched configuration.

3. The payload delivery system of claim 1 , wherein the actuators are electrically-operated linear actuators.

4. The payload delivery system of claim 1 , wherein the actuators are pneumatic linear actuators.

5. The payload delivery system of claim 1 , wherein the plurality of actuators comprise telescoping sections and are configured to disengage the latches by extending the telescoping sections.

6. The payload delivery system of claim 1 , wherein the actuators disengage the latches by extending the actuators between an anchor point and the latches.

7. The payload delivery system of claim 1 , wherein the payload container and the payload container lid comprise a circular, square, rectangular, trapezoidal or triangular cross section.

8. The payload delivery system of claim 1 , wherein the latches are pivotally attached to the payload container and pivot from a latched position to an unlatched position and wherein selectively engaging the payload container lid comprises removably attaching the payload container lid to the payload container, and disengaging the latches from the payload container lid comprises releasing the payload container lid from the payload container.

9. The payload delivery system of claim 1 , wherein the latches are shaped to engage edges of the payload container and the actuators further comprise latch engagement portions adjustable to provide contact between the latches and the actuators when the actuators disengage the latches from the payload container.

10. The payload delivery system of claim 1 , wherein the latches are biased to be engaged with the payload container lid at rest.

11. The payload delivery system of claim 10 , wherein the latches are biased by a mechanical restoring force.

12. A method of payload delivery for selectively releasing the payload from a drone-based delivery system, the method comprising:

providing a container lid;

providing a payload container comprising one or more external walls, enclosing a volume inside the payload container, the payload container having a plurality of latches pivotally affixed to the external walls and outside the enclosed volume, wherein the latches comprise grooves sized to selectively engage the payload container lid, wherein inside surfaces of the grooves wrap around portions of the payload container lid reaching a top surface of the payload container lid external to the enclosed volume and pulling the payload container lid toward the payload container,

wherein the latches are biased with a restoring mechanical force to engage edges of the payload container lid; and

attaching a plurality of actuators to the payload container lid on the top surface external to the enclosed volume, wherein the actuators are extendable to oppose the mechanical force and disengage the container lid from the container.

13. The method of claim 12 , wherein the restoring mechanical force is provided with a spring.

14. The method of claim 12 , wherein the actuators are one or more of: electrically-operated linear actuators, pneumatic linear actuators, magnetic actuators, and radial actuators.

15. The method of claim 12 , wherein the actuators comprise telescoping sections extendable between an anchor point and the latches.

16. The method of claim 12 , wherein the actuators further comprise engagement portions adjustable to provide contact between the actuators and the latches.

17. A payload delivery system for selectively releasing the payload from a drone-based delivery system, the system comprising:

a payload container lid;

a payload container, comprising one or more external walls, enclosing a volume inside the payload container, the payload container having means for engaging the payload container lid, wherein the payload container and the payload container lid enclose the inside volume and wherein the means for engaging is pivotally affixed to the external walls and outside the enclosed volume, wherein the means for engaging comprise grooves sized to selectively engage the payload container lid, wherein inside surfaces of the grooves wrap around portions of the payload container lid reaching a top surface of the payload container lid external to the enclosed volume and pulling the payload container lid toward the payload container, wherein the means for engaging is attached to the payload container lid on the top surface external to the enclosed volume; and

means for disengaging, extendable to disengage the means for engaging from the payload container lid.

18. The system of claim 17 , wherein the engaging means comprises means for providing a restoring mechanical force.

19. The system of claim 17 , wherein the means for disengaging is attached to the payload container lid on a surface external to the volume.