Safety switch for floor treatment apparatus

Details Safety switch for floor treatment apparatus Safety switch for floor treatment apparatus

1978-05-04

1979-11-13

Stephan, Steven L.

Electricity: circuit makers and breakers

Liquid contact

Time delay

15DIG10, 200 6185, 200325, H01H 906, H01H 1308, H01H 920, H01H 320

Patent

active

041744730

ABSTRACT:
A safety switch for a floor treatment machine, such as a commercial type floor polishing apparatus. The switch is incorporated in an existing control housing of the apparatus and has a trigger mechanism for operating a microswitch to turn the apparatus on or off. The safety switch must be manually moved to permit the trigger to release the negative pressure microswitch. The microswitch reverts to an off position when the spring-loaded mechanism is released.

REFERENCES:
patent: 2630509 (1953-03-01), Arones
patent: 2919332 (1959-12-01), Descarries
patent: 3397419 (1968-08-01), Okun
patent: 3766352 (1973-10-01), Bigley

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