Patent ID: 9004454
Filing Date: 2015-04-14
Classification: B65D

Abstract:
1. A system for vertically lifting and lowering a container relative to a supporting surface, comprising: at least two lift mechanisms, each of said lift mechanisms having a frame attached to the container; an elongated cylinder and piston associated with each frame, said cylinder being attached to its associated frame and a foot attached to said piston, a longitudinal axis of each cylinder and piston being substantially vertically oriented, wherein each frame is pivotally attached between an upper and a lower support block on the container about a vertical axis between a storage position in which its associated piston and cylinder nests closely adjacent the container and an operational position in which its associated piston and cylinder is spaced outwardly from the container, and wherein each said frame is vertically slidably mounted to the container between an upper and a lower position and wherein, with said frame in said upper position, a portion of said frame is received within a locking recess on the upper support block which locks said frame against pivotal movement; a power source selectively connected to each piston and cylinder; and a control circuit which controls the connection of said power source to each cylinder and piston to move said piston between a retracted position in which said piston is spaced upwardly from the supporting surface and an extended position in which said foot engages the supporting surface and lifts the container upwardly from the supporting surface.