Safety switch system for industrial machines

Details Safety switch system for industrial machines Safety switch system for industrial machines

1981-10-02

1983-10-25

Eisenzopf, Reinhard J.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

361189, H01H 900

Patent

active

044122683

ABSTRACT:
A touch plate switch is used to energize an industrial machine. The switch is closed by mere contact of the touch plate by an operator's hand. No physical movement of the plate is required. As a consequence, the risk of the operator developing carpal tunnel syndrome is substantially eliminated. By providing two such touch plate switches for operating relay switches connected in series, both switches must be simultaneously operated to start the industrial machine. By separating the switches a distance sufficient to prevent operation of both switches by one hand, the operator must use both hands and thereby a further safety feature is realized in that one of the operator's hands will not be inadvertently damaged by the machine.

REFERENCES:
patent: 3483437 (1969-12-01), Coyne
patent: 3641410 (1972-02-01), Vogelsberg
patent: 3805085 (1974-04-01), Andrews
patent: 3895269 (1975-07-01), Geremia
patent: 4054935 (1977-10-01), Ginsberg
patent: 4074602 (1978-02-01), Brower
patent: 4091438 (1978-05-01), Olding

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