Interlocked motion detector wall switch

Details Interlocked motion detector wall switch Interlocked motion detector wall switch

1990-01-10

1990-11-27

Recla, Henry J.

Electricity: circuit makers and breakers

Switch activation inhibitor

Actuator blocking device

250221, 200333, 200327, 200 50A, H01H 922, H01H 928

Patent

active

049738011

ABSTRACT:
An interlocked infrared detector wall switch which prevents use of the full "on" position that bypasses the infrared sensor, but permits changeover by service personnel to use the full "on" position. The slide switch on the wall switch assembly is partially covered by a snap-on interlock plate so that it can not be moved to the full "on" position. Removal of the interlock plate requires a screwdriver for leverage within an opening at the bottom of the interlock plate, but this opening is covered by the decorative switch plate, so that removal of the interlock plate is impossible without first removing the covering decorative plate. Casual disabling of the interlock is thereby prevented.

REFERENCES:
patent: D253879 (1980-01-01), Jensen
patent: 2807692 (1957-09-01), Leslie
patent: 2824915 (1958-02-01), Buturuga
patent: 2832857 (1958-04-01), Landmeier
patent: 3839614 (1974-10-01), Saganowski
patent: 4102471 (1978-07-01), Lore
patent: 4468544 (1984-08-01), Wainess
patent: 4554421 (1985-11-01), Grunert
patent: 4719363 (1988-01-01), Gallacher
patent: 4873469 (1989-10-01), Young et al.

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