Patent ID: 6951274

Claim:
A conveyor sortation system comprising: a sortation bed having a plurality of generally parallel slats that define a conveying surface that carries articles to be sorted, and a propulsion system propelling said slats in a direction of conveyance; a plurality of pushers movably coupled to said slats, and at least one diverter switch adapted to initiate divert of at least one of said pushers along said slats in a divert direction generally transverse to said direction of conveyance; first and second pusher sensors for sensing said pushers, said first pusher sensor being upstream of said at least one diverter switch, said second pusher sensor being downstream of said at least one diverter switch; a first controller in communication with said first and second pusher sensors and said at least one diverter switch, said first controller responsive to said first pusher sensor to activate said at least one diverter switch to initiate a divert of said at least one of said pushers said first controller responsive to said second pusher sensor to determine if said at least one of said pushers actually diverted.