Passive personal alarm device

Details Passive personal alarm device Passive personal alarm device

1982-03-08

1985-05-28

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

34030915, 340530, G08B 2100

Patent

active

045203512

ABSTRACT:
A passive personal alarm device is activated by release of a spring-loaded button switch which, when held down, opens an otherwise closed circuit. A time delay element in the circuit prevents sounding of the alarm for a predetermined period in the event of an accidental release of the actuating button. The button is released, either purposefully or inadvertently, during an attack and the alarm is sounded after expiration of the time delay. Once activated, the alarm device can be deactivated only by repositioning a number of coded switches in a pattern known only to the alarm user.

REFERENCES:
patent: 2766358 (1956-10-01), Davidson
patent: 3579222 (1971-05-01), Freeman
patent: 3720937 (1973-03-01), Lang et al.
patent: 3832705 (1974-08-01), King et al.
patent: 3866204 (1975-02-01), Barkley
patent: 4258359 (1981-03-01), McLamb
patent: 4262285 (1981-04-01), Polley
patent: 4264892 (1981-04-01), Zonn
patent: 4404549 (1983-09-01), Berg

Affiliated with

Also associated with

Rating

Passive personal alarm device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-871157