Patent ID: 7798435

Claim:
A shredder for shredding substrates, comprising: a housing; a shredder mechanism received in the housing and including a motor and cutting elements, the shredder mechanism enabling substrates to be shredded to be fed into the cutting elements and the motor being operable to drive the cutting elements in a shredding direction so that the cutting elements shred the substrates fed therein; the housing having a feed opening enabling the substrates to be shredded to be fed into the cutting elements; a reservoir constructed to contain an amount of fluid lubricant; a plurality of spray nozzles communicated with the reservoir, the nozzles having openings for spraying the fluid lubricant under pressure; and a pump, operable to deliver the fluid lubricant under pressure to the plurality of nozzles such that the fluid is sprayed to lubricate the cutting elements; and an intermediate surface, positioned with respect to the nozzles and the cutting elements such that fluid sprayed from the nozzles impinges directly on the intermediate surface, and flows from the intermediate surface to the cutting elements.