Abstract: A safety lock system for cabinet drawers that provides a lock mechanism that in a locked position prevents any drawer from opening and in an unlocked position allows only one drawer to be opened at any one time. The system includes a slide wedge-ended member attached to each drawer, an inner cabinet wall and a support member both of which include vertically aligned T-shaped slots for receiving interlock pieces. Each interlock piece includes an upper protrusion and a lower protrusion and a spacer bar connecting the two protrusions.

Abstract: A cabinet interlocking system is disclosed for a cabinet comprising a plurality of drawers wherein the interlocking system acts to prevent more than one drawer being opened at one time.

Abstract: A medical cart is provided with a keyless locking system for drawers containing narcotics and for other drawers containing pharmaceuticals. Some personnel may be authorized with codes to open both the narcotics and pharmaceutical drawers while other personnel may have codes that open the pharmaceutical drawers but do not open the narcotics drawers. Preferably, an audit trail is provided to know who had or tried to access the drawers and when the access was attempted and accomplished. To this end there is a memory store and read-out port that allows downloading or read-out of the audit trail. The medical cart has a simplified locking system with fewer and more reliable components comprising cam operated locking bars that operate locking rods that latch with latch portions on the slidable drawers in the cart. The drawers may be automatically locked upon slamming them to a closed position.