Ionization smoke detector with controlled sensitivity

Details Ionization smoke detector with controlled sensitivity Ionization smoke detector with controlled sensitivity

1977-08-31

1979-10-16

Willis, Davis L.

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

G01T 118

Patent

active

041714865

ABSTRACT:
An ionization smoke detector is provided with a ventilated sensing chamber and housing which cooperate to improve and control smoke sensitivity by reducing adverse effects of external winds or drafts. The detector includes a housing having arcuate openings arranged in a circle and a flared deflector mounted within the circle in order to direct smoke and other particulate matter into the interior of the housing. A smoke sensing chamber is positioned within the housing adjacent the openings and has a cylindrical shell electrode defining arcuate ventilating apertures registering with the arcuate openings of the housing to pass smoke and particulate matter in and out of the chamber in cooperation with the flared deflector. The shell electrode and the housing cooperate to control the flow of smoke through the chamber and thereby improve smoke sensitivity.

REFERENCES:
patent: 3909815 (1975-09-01), Cacogne
patent: 4017733 (1977-04-01), Ishii et al.

Affiliated with

Also associated with

Rating

Ionization smoke detector with controlled sensitivity 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 controlled sensitivity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ionization smoke detector with controlled sensitivity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-806243