Patent ID: 8882011
Filing Date: 2014-11-11
Classification: B02C

Abstract:
1. A shredder for shredding substrates, comprising: a housing; a substrate receiving opening provided on the housing; a shredder mechanism received in the housing and comprising a motor, a pair of cooperating shredding structures each having a set of spaced apart cutter elements interleaving with one another such that substrates fed through the substrate receiving opening are fed between the interleaved sets of cutter elements, at least one of the cooperating shredding structures including a rotatably mounted shaft rotatable by the motor with its cutter elements mounted in spaced apart relation with spaces therebetween; the shredder mechanism enabling substrates to be shredded to be fed between the interleaved sets of cutter elements and the motor being operable to rotate the shaft in a shredding direction so that the cutter elements shred the substrates fed therein; the shaft having a tubular body with an inner surface defining a hollow interior, an outer surface, and a plurality of openings formed through the tubular body open to the inner and outer surfaces, the openings being open to the spaces between the cutter elements on the shafts, a supply of lubricant communicating with the plurality of openings of the shaft so as to deliver the lubricant from the interior of the shaft to the cutter elements through the openings.