Document shredder

Details Document shredder Document shredder

1992-03-12

1993-08-17

Yost, Frank T.

Solid material comminution or disintegration

Apparatus

With automatic control

241236, B02C 716

Patent

active

052361381

ABSTRACT:
A document shredder (11) has a cutting mechanism (13), which is driven via a gear (25) by an electric motor (26). In the return movement a diode (30) is connected in, which reduces the voltage supplied to the motor and therefore its maximum torque.
This avoids material being jammed on the top of the cutting mechanism during the return movement in such a way that the cutting mechanism cannot be rotated again during the following forward movement.

REFERENCES:
patent: 3602784 (1971-08-01), Euler
patent: 4496105 (1985-06-01), Fleming et al.
patent: 4545537 (1985-10-01), Kimura et al.
patent: 4609155 (1986-09-01), Garnier
patent: 4619407 (1986-10-01), Goldhammer
patent: 4709197 (1987-11-01), Goldhammer et al.

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