Patent ID: 7223058

Claim:
A material container discharge assembly comprising: a main frame assembly comprising a support frame, a hoist support engaged to the main frame assembly, and a hoist moveably engaged with the hoist support; a material container transport component engaged to the hoist and adapted to engage a material container; at least two independently movable material container impactors engaged to the main frame assembly; a discharge receiving gate engaged to the support frame comprising a material container receiving aperture and first, second, and third movable plates, wherein the first and third plates are movable between an open and closed position and further define a second plate receiving area for receiving the opposed second plate when the second plate and the first and third plates are in the closed position and the first, second, and third plates define a container support surface when the plates are in the closed position; and a substantially circular access chamber spaced below the material container receiving aperture and around a material receiving spout comprising: at least two access doors on substantially opposite sides of the chamber that operate to create a substantially air tight seal when closed; and a sealing system comprising a sealing device movable between a disengaged position and an engaged position, wherein the engaged position operates to seal the container in position over the spout.