US Patent 8700211 Slide bar locking drawer for medications cabinet

A controlled access pharmaceutical storage cabinet has at least one pull-out drawer that is divided into a number of locked compartments, arranged in rows. A slide bar lock is positioned between rows of the compartments, and has a series of slots along each edge which align with lock pins on hinged lids or covers for the compartments. Only one compartment can be opened at a time. A gear-motor is provided for each slide bar to move the slide bar to a position for access to a given compartment.