In one embodiment, an inventory storage module has a pair of upper tracks and a pair of lower tracks that are connected to one another so as to define a closed movement path in a vertical plane. The module has a plurality of carriers arranged end-to-end along the upper and lower tracks. Each carrier is elongate along a direction that extends between a pair of the upper or lower tracks so as to carry a set of the storage containers that are arranged side-by-side. Each carrier has first and second first wheel assemblies that couple the carrier to the pairs of upper tracks and lower tracks when supported by the pairs of upper tracks and lower tracks, respectively. The storage module can move the inventory carriers around the movement path until a desired one of the inventory carriers is presented at one of the first and second ends.

In one embodiment, an inventory storage module has a pair of upper tracks and a pair of lower tracks that are connected to one another so as to define a closed movement path in a vertical plane. The module has a plurality of carriers arranged end-to-end along the upper and lower tracks. Each carrier is elongate along a direction that extends between a pair of the upper or lower tracks so as to carry a set of the storage containers that are arranged side-by-side. Each carrier has first and second first wheel assemblies that couple the carrier to the pairs of upper tracks and lower tracks when supported by the pairs of upper tracks and lower tracks, respectively. The storage module can move the inventory carriers around the movement path until a desired one of the inventory carriers is presented at one of the first and second ends.

In one embodiment, an storage module has first and second guide rails that are spaced from one another along a lateral direction. Each guiderail has an upper track and a lower track spaced from one another along a vertical direction, and first and second connecting tracks that connect the upper track to the lower track at first and second ends, respectively. A plurality of inventory carriers that are supported between the guiderails and are arranged end-to-end along the upper and lower tracks. A drivetrain drives the carriers to translate along the upper and lower tracks at a first speed, and drives the carriers to translate along the connecting tracks at a second speed, faster than the first speed. Increasing the speed of the carriers at the connecting tracks can prevent the carriers from colliding with one another when transitioning between the upper track and the lower track.

In one embodiment, an storage module has first and second guide rails that are spaced from one another along a lateral direction. Each guiderail has an upper track and a lower track spaced from one another along a vertical direction, and first and second connecting tracks that connect the upper track to the lower track at first and second ends, respectively. A plurality of inventory carriers that are supported between the guiderails and are arranged end-to-end along the upper and lower tracks. A drivetrain drives the carriers to translate along the upper and lower tracks at a first speed, and drives the carriers to translate along the connecting tracks at a second speed, faster than the first speed. Increasing the speed of the carriers at the connecting tracks can prevent the carriers from colliding with one another when transitioning between the upper track and the lower track.

A method and apparatus are provided for sorting or retrieving items to/from a plurality of destinations areas. The items are loaded onto one of a plurality of independently controlled delivery vehicles. The delivery vehicles follow a path to/from the destination areas that are positioned along the path. Along the path, the vehicles are scanned to determine if any item on the vehicles extends beyond a dimensional constraint. If it is determined that an item on a vehicle extends above the pre-determined threshold, the vehicle is controlled, such as by stopping or re-directing the vehicle. Once at the appropriate destination area, an item is transferred between the delivery vehicle and the destination area.

A method and apparatus are provided for sorting or retrieving items to/from a plurality of destinations areas. The items are loaded onto one of a plurality of independently controlled delivery vehicles. The delivery vehicles follow a path to/from the destination areas that are positioned along the path. Along the path, the vehicles are scanned to determine if any item on the vehicles extends beyond a dimensional constraint. If it is determined that an item on a vehicle extends above the pre-determined threshold, the vehicle is controlled, such as by stopping or re-directing the vehicle. Once at the appropriate destination area, an item is transferred between the delivery vehicle and the destination area.

An article transport facility includes an article transport vehicle, a storage rack configured to store articles, and a for-rack transport device. The article transport vehicle is configured to travel along one or more rails suspended from, and supported by, a ceiling. The storage rack is suspended from, and supported by, the ceiling. The for-rack transport device is located on an opposite side from the one or more rails with respect to the storage rack. With at least one level of the plurality of levels in at least one of the one or more vertical rows of storage locations being each designated as a carrying-in-or-out level in a corresponding vertical row, and with at least one level of the plurality of levels in at least one of the one or more vertical rows that is not a carrying-in-or-out level being each designated as a storage level in a corresponding vertical row, the article transport vehicle is configured to be capable of transferring an article to any storage location at any carrying-in-or-out level in any of the one or more vertical rows, and is configured to be incapable of transferring an article to any storage location at any storage level in any of the one or more vertical rows.

An article transport facility includes an article transport vehicle, a storage rack configured to store articles, and a for-rack transport device. The article transport vehicle is configured to travel along one or more rails suspended from, and supported by, a ceiling. The storage rack is suspended from, and supported by, the ceiling. The for-rack transport device is located on an opposite side from the one or more rails with respect to the storage rack. With at least one level of the plurality of levels in at least one of the one or more vertical rows of storage locations being each designated as a carrying-in-or-out level in a corresponding vertical row, and with at least one level of the plurality of levels in at least one of the one or more vertical rows that is not a carrying-in-or-out level being each designated as a storage level in a corresponding vertical row, the article transport vehicle is configured to be capable of transferring an article to any storage location at any carrying-in-or-out level in any of the one or more vertical rows, and is configured to be incapable of transferring an article to any storage location at any storage level in any of the one or more vertical rows.

A method and apparatus are provided for sorting or retrieving items to/from a plurality of destinations areas. The items are loaded onto one of a plurality of independently controlled delivery vehicles. The delivery vehicles follow a path to/from the destination areas that are positioned along the path. Along the path, the vehicles are scanned to determine if any item on the vehicles extends beyond a dimensional constraint. If it is determined that an item on a vehicle extends above the pre-determined threshold, the vehicle is controlled, such as by stopping or re-directing the vehicle. Once at the appropriate destination area, an item is transferred between the delivery vehicle and the destination area.

A method and apparatus are provided for sorting or retrieving items to/from a plurality of destinations areas. The items are loaded onto one of a plurality of independently controlled delivery vehicles. The delivery vehicles follow a path to/from the destination areas that are positioned along the path. Along the path, the vehicles are scanned to determine if any item on the vehicles extends beyond a dimensional constraint. If it is determined that an item on a vehicle extends above the pre-determined threshold, the vehicle is controlled, such as by stopping or re-directing the vehicle. Once at the appropriate destination area, an item is transferred between the delivery vehicle and the destination area.