Electric lamp and discharge devices: systems – With signal – indicator – or alarm
Patent
1975-08-28
1977-07-26
La Roche, Eugene R.
Electric lamp and discharge devices: systems
With signal, indicator, or alarm
200317, 240 2SP, 315136, F21V 3300, H05B 3700
Patent
active
040385825
ABSTRACT:
An internally illuminated switch plate for providing visual indications of the on-off condition of an electrical wall switch. The plate comprises a wall plate in the form of a flat slab adapted to overlie the wall fixture and constituted of material which conducts light. A small recess in the rear surface carries a neon glow lamp, and a second recess carries a resistor. The glow lamp and resistor are connected in series, and this assemblage in turn connected across the terminals of the switch. Connections to the neon lamp and resistor are made via tracks of conductive paint disposed in grooves in the rear surface of the slab. The tracks extend to two terminals of the slab, from which flexible leads are run to terminals of the switch. The arrangement is such that when the switch is off, the lamp is energized by the voltage normally appearing across the switch terminals, to thus provide a visual indication of the on-off condition of the switch.
REFERENCES:
patent: 2839670 (1958-06-01), Gladstone
La Roche Eugene R.
Lehmann H. Gibner
Lehmann K. Gibner
Product Concepts, Inc.
LandOfFree
Internally illuminated switch plate does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Internally illuminated switch plate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Internally illuminated switch plate will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-728734