Patent ID: 8864437

Claim:
An apparatus, comprising: a) at least two flap guide assemblies, each flap guide assembly comprising: i) one or more arms; and ii) one or more flap guides, each of the one or more flap guides attached to a first end of one of the arms and configured to contact and move a foldably-attached part of an object out and/or away from a stack of substantially identical objects; b) one or more cams, each cam comprising: i) a cam track in and/or on one of the arms of the at least two flap guide assemblies, the cam track having one or more sections, wherein the cam track comprises a first section having a first slope, a second section having a second slope that is different from the first slope, and a third section having a third slope that is different from the second slope; and ii) a cam follower configured to move in the cam track along the one or more sections and move the one or more arms with respect to the stack; and c) a lift assembly having a lifting mechanism, the lift assembly connected to each of the one or more cams at the corresponding cam follower, the lift assembly configured to move the object having foldably-attached parts vertically upward and facilitate upstacking the object into the stack of objects.