Patent ID: 11964605
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 1:
2. A hinge assembly for opening and closing a lid, comprising:
a lid having an open position and a closed position relative to a lip of a container or robot;
a fixed hinge body having a vertical slot and a curved slot that is connected to the vertical slot;
a pivot leg assembly including a pivot leg configured to have movement that is guided by the vertical slot and the curved slot;
a spring piston that is connected to the lid and to the pivot leg; and
an actuator and linkage configured to move the pivot leg as guided by the vertical slot and the curved slot;
whereby the hinge assembly is configured such that downward movement of the pivot leg moves a portion of the spring piston downwardly against a spring force.