Patent ID: 7484631

Claim:
A modular storage system comprising: a plurality of carts, at least one of the plurality of carts including: a base generally having a length that separates opposed ends of the base; a storage structure operably attached to and carried by the base; at least three pivotable wheel assemblies, each wheel assembly operably attached to and extending below the base to provide a rolling surface adapted to roll on the floor; and at least one track follower mechanism having a height and a vertical axis along the height, the at least one track follower mechanism operably attached to one end of the base and having at least a portion of which is axially movable upwardly and downwardly along the vertical axis; and a track operably positioned on the floor and extending along a track axis, such that a cart is operably retained by and movable along the track axis when the at least one track follower mechanism is selectively engaged with the track by movement of the track follower mechanism from a position out of the track downwards axially along the vertical axis and into the track to permit the cart to be selectively positioned in a storage position that is generally side-by-side with an adjacent cart along the track axis and in an accessible position that is generally spaced apart with an adjacent cart along the track axis, and such that the cart is removable from the track and movable in a direction transverse to the track axis when the at least one track follower mechanism is selectively disengaged from the track by movement of the track follower mechanism from a position in the track upwards axially along the vertical axis and out of the track.