Patent ID: 8167223
Filing Date: 2012-05-01
Classification: B02C,B65H

Abstract:
1. A shredder comprising: a housing; a shredder mechanism received in the housing and including a motor and cutter elements, the motor rotating the cutter elements in an interleaving relationship for shredding articles fed therein; a tray for holding a stack of articles to be fed into the cutter elements; a feed mechanism for feeding articles from the tray to the cutter elements of the shredder mechanism, the feed mechanism comprising an engaging surface for engaging articles; a feed driver system constructed to drive the feed mechanism to feed articles to the cutter elements; the shredder further comprising a waste level sensor operable to detect an accumulation of shredded particles discharged by the shredder mechanism and a queue sensor operable to determine an amount of articles provided on the tray, and a controller coupled to the shredder mechanism, feed driver system, waste level sensor, and queue sensor, the controller being configured to compare the accumulation of shredded particles detected by the waste level sensor to the amount of articles provided on the tray detected by the queue sensor in order to perform a predetermined operation of the shredder.