A positive displacement sorter apparatus and method includes providing a
plurality of interconnected slats defining an endless web, an upper run
of the web defining a conveying surface. A plurality of pusher shoes are
provided, each moving along at least one of the plurality of slats to
laterally displace articles on the conveying surface. Each of the pusher
shoes includes a diverting portion extending above the conveying surface.
The diverting portion includes a diverting surface and a stop surface.
The diverting surface contacts an article and laterally displaces that
article. A lifting force is applied by the diverting surface to a portion
of the article being diverted. The stop surface limits movement of the
article relative to the pusher shoe.