Proximity alarm

Details Proximity alarm Proximity alarm

1982-07-26

1984-07-17

Trafton, David L.

Communications: electrical

Selective

Having indication or alarm

200 6144, 200DIG10, B60Q 100

Patent

active

044608896

ABSTRACT:
A simplified proximity alarm of the type used on motor vehicles to sense the curb, low overpasses, etc. utilizes an extended feeler probe which passes through a loop contact such that when the two meet an audio or visual alarm signalling device within the cab of the vehicle is actuated. Special means mounting the probe are provided whereby a tangential set screw doubles as a means of retaining the probe within the mounting plug under a pre-determined tension, and also the screw acts as a terminal for connection into the alarm circuit. Moisture and fume protection is provided in one embodiment, and the probe and probe tip are so designed to avoid destruction of the entire unit should the probe become snagged.

REFERENCES:
patent: 2520305 (1950-08-01), Campbell
patent: 2812397 (1957-11-01), Taylor
patent: 2930862 (1960-03-01), Samaniego

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