Ionization smoke detector with increased operational reliability

Details Ionization smoke detector with increased operational reliability Ionization smoke detector with increased operational reliability

1980-10-20

1982-12-14

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

250381, G08B 1710

Patent

active

043640311

ABSTRACT:
An ionization smoke detector containing at least one ionization chamber operated at an extra low voltage or potential. The ionization chamber contains a sensor employing a measuring electrode and a counter electrode. Ambient air has practically free access to the ionization chamber and there are provided one or more radioactive sources for generating ions, a supply voltage source and an electrical circuit for triggering an alarm. The smoke detector possesses increased operational reliability since circuit elements are provided which enable signal reporting to a central station by means of a low-voltage of about 200 volts, however the sensor is operated at an extra low voltage.

REFERENCES:
patent: 3295121 (1966-12-01), Meyer
patent: 3500368 (1970-03-01), Abe
patent: 3521263 (1970-07-01), Lampart et al.
patent: 3657713 (1972-04-01), Sasaki et al.
patent: 3714641 (1973-01-01), Scheidweiler
patent: 3797008 (1974-03-01), Yuasa
patent: 3872449 (1975-03-01), Scheidweiler
patent: 4017852 (1977-04-01), Kabat

Affiliated with

Also associated with

Rating

Ionization smoke detector with increased operational reliability does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1203271