Ionization smoke detector having improved stability and sensitiv

Details Ionization smoke detector having improved stability and sensitiv Ionization smoke detector having improved stability and sensitiv

1978-01-13

1980-01-22

Willis, Davis L.

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

G01T 118

Patent

active

041851960

ABSTRACT:
An ionization smoke detector is disclosed wherein an electric field is established in an ionization chamber for reducing detector instability caused by air currents acting on the detector. An improved structure for enhancing detector sensitivity by establishing a unipolar region in the chamber is described.

REFERENCES:
patent: 2994768 (1961-08-01), Derfler
patent: 3233100 (1966-02-01), Lampart
patent: 3913082 (1975-10-01), Hamm
patent: 3959788 (1976-05-01), Tipton et al.

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