Patent ID: 7712689
Filing Date: 2010-05-11
Classification: B02C,B26D

Abstract:
1. A shredder comprising: a housing having a throat open to an exterior of the housing for permitting a user to feed at least one article to be shredded; a shredder mechanism received in the housing and including an electrically powered motor and cutter elements, the shredder mechanism enabling the at least one article fed into the throat to be shredded to be fed into the cutter elements and the motor being operable to drive the cutter elements so that the cutter elements shred the articles fed therein; a lubrication system configured to lubricate the cutter elements; a thickness detector configured to detect a thickness between opposing major surfaces of the at least one article being received by the throat; and a controller operable to store an accumulation of thicknesses detected by the detector over a plurality of shredding operations performed over time and to actuate the lubrication system to lubricate the cutter elements in response to the accumulation being at least equal to a predetermined total thickness.