Document shredder

Details Document shredder Document shredder

1988-10-20

1990-06-26

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Combined or convertible

241236, B02C 1824

Patent

active

049365177

ABSTRACT:
The invention is directed to a document shredder (1) driven by an electric motor (2), with a stepdown gear train (4, 5, 7, 8) arranged between the drive and the cutting mechanism (9). Hitherto these appliances were powered by AC motors, which operate already relatively slow cutting speed when shredding low quantities of paper sheet layers, and in which the breakdown torque occurs at a very early stage. Prejudices existed up to now against the use of DC motors in document shredders because of a number of reasons. In the invention a DC motor (2) especially a series-wound motor is now used as a drive for a document shredder (1). It has the decisive advantage, of enabling a high cutting speed with small quantities of paper layers, which decreases approximately continuously as a function of the quantity of paper layers, wherein stoppage is to be expected only with very high quantities of paper layers.

REFERENCES:
patent: 4627577 (1986-12-01), Hyuga et al.

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