Abstract
A drawer opening system includes a hitch on a robot arm, and a block assembly disposed within a cavity on an external face of a first drawer, such that the hitch is configured to approach the external face of the drawer, enter the recess, and securely engage the block assembly within the cavity. In illustrative embodiments, when not engaged with the hitch, no part of the block assembly extends beyond the external face of the drawer such that it would impede access of a robot to a second open drawer disposed beneath the first drawer.