Proximity detector

Details Proximity detector Proximity detector

1977-11-18

1980-03-04

Hix, L. T.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

307130, 328 5, H01H 3600

Patent

active

041918940

ABSTRACT:
A proximity detector including a pair of antennae disposed at the front edge of a door with a space; and voltage converters for converting earth electrostatic capacities of the antennae to the corresponding voltages. The proximity detector further includes a first detecting circuit for detecting a differential signal of the outputs of the voltage converters; and a second detecting circuit for detecting a summing signal of the outputs of the voltage converters. The movement of the door is controlled by the output of the first detecting circuit and/or the output of the second detecting circuit.

REFERENCES:
patent: 2720284 (1955-10-01), Galanty
patent: 3194975 (1965-07-01), Diamond
patent: 3510677 (1970-05-01), Lister
patent: 4013899 (1977-03-01), Guicheteau

Affiliated with

Also associated with

Rating

Proximity detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Proximity detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Proximity detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2041426