Protective device for paper shredders

Details Protective device for paper shredders Protective device for paper shredders

1992-11-18

1994-06-07

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

With automatic control

241 375, 241236, 241 36, B02C 2500

Patent

active

053182294

ABSTRACT:
A paper shredder has cutting discs that are protected by detecting the approach of a metal object. When the object is detected, the motor that drives the discs is deenergized and a brake is applied to stop the cutting discs.

REFERENCES:
patent: 2179240 (1939-11-01), Breitenstein
patent: 4018392 (1977-04-01), Wagner
patent: 4354178 (1982-10-01), Janssen
patent: 4426044 (1984-01-01), Butler
patent: 4815669 (1989-03-01), Fujii
patent: 4817877 (1989-04-01), Itoh et al.
patent: 4867383 (1989-09-01), Terry et al.
patent: 5188301 (1993-02-01), Hasegawa

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