Alarm system

Details Alarm system Alarm system

1986-08-12

1988-05-17

Levy, Stewart J.

Communications: electrical

Condition responsive indicating system

Specific condition

340567, 340529, G01B 1300

Patent

active

047454008

ABSTRACT:
An alarm system comprising a sensor which detects a human body in a fixed detection area and outputs signals, a delay timer circuit which outputs signals after passing a fixed delay time by turning on an alarm switch, a two input AND circuit in which output signals of the delay timer circuit and the sensor are entered, a latch circuit with a delay timer which outputs signals after passing a fixed delay time from when output signals of the two input AND circuit are entered and keeps the signals being outputed until entry of reset signals.

REFERENCES:
patent: 3449738 (1969-06-01), Chesnul et al.
patent: 3745550 (1973-07-01), Anthony et al.
patent: 3828338 (1974-08-01), Kato
patent: 3858194 (1974-12-01), Jedynak et al.
patent: 4122437 (1978-10-01), Petersen
patent: 4485374 (1984-11-01), Meserow et al.

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1883868