Method and system for transporting inventory items

Details Method and system for transporting inventory items Method and system for transporting inventory items

2006-06-09

2010-11-02

Crawford, Gene (Department: 3651)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Article handling

Reexamination Certificate

active

07826919

ABSTRACT:
A system for transporting inventory items includes an inventory holder capable of storing inventory items and a mobile drive unit. The mobile drive unit is capable of moving to a first point with the inventory holder at least one of coupled to and supported by the mobile drive unit. The mobile drive unit is additionally capable of determining a location of the inventory holder and calculating a difference between the location of the inventory holder and the first point. The mobile drive unit is then capable of determining whether the difference is greater than a predetermined tolerance. In response to determining that the difference is greater than the predetermined tolerance, the mobile drive unit is also capable of moving to a second point based on the location of the inventory holder, docking with the inventory holder, and moving the mobile drive unit and the inventory holder to the first point.

REFERENCES:
patent: 4972917 (1990-11-01), Matsumoto et al.
patent: 5993045 (1999-11-01), Schmidtke et al.
patent: 6823236 (2004-11-01), Speckhart et al.
patent: 2004/0010337 (2004-01-01), Mountz
patent: 0 244 984 (1987-11-01), None
patent: 2 689 488 (1992-04-01), None
patent: WO 2006/0441808 (2006-04-01), None
Canadian Patent Office Official Action in Canadian Patent Application No. 2,652,114, dated Nov. 5, 2009, 4 pages.

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