Abstract: A storage and retrieval system includes a continuous track and a plurality of individual storage units stacked in multiple columns or rows. Each storage unit is engaged with the track for selective movement along the track. Each storage unit includes two sets of wheels, a first set of wheels for engaging the continuous track, and a second set of wheels for engaging support rails disposed above an upper rail of first and second tracks of the continuous track, so as to support the storage unit as the storage unit passes gaps in the upper rail due to intermediate vertical rails extending downwardly intermediate ends thereof.

Abstract: A storage and retrieval system includes a continuous track and a plurality of individual storage units stacked in multiple columns or rows. Each storage unit includes wheels for engaging the continuous track for selective movement along the track. A conveyor apparatus is used to selectively move the storage units along the length of the continuous track between uppermost positions of adjacent columns, so as to support the storage unit as the storage unit passes gaps in the upper rail due to intermediate vertical rails extending downwardly intermediate ends thereof.

Abstract: An inventory control system includes a storage module having a continuous track and a plurality of individual storage units stacked in multiple columns or rows. Each storage unit is engaged with the track for selective movement along the track. An inventory control unit is associated with the storage module and has a user interface, a processor, a memory, and a mechanism for inputting object information, including storage unit placement. The processor receives the object information from the inputting mechanism, and stores the object information in the memory for user access therefrom via the user interface.

Abstract: A storage and retrieval system includes a plurality of individual storage units stacked in multiple columns. Each storage unit includes wheels which engage a track for selective movement along the track. Vertical and horizontal actuators are used to move the storage units in sequence. Preferably, the actuators are power-driven, and control circuitry is used to coordinate the movement of the actuators.