System for detecting a combustion process

Details System for detecting a combustion process System for detecting a combustion process

1978-01-03

1980-12-09

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

With particular system function

200159A, 200340, 250381, 313 54, 340629, G08B 1710, H01H 312, H01H 1352

Patent

active

042387884

ABSTRACT:
An ionization type smoke detector includes an element for giving a visible indication of operativeness of the system together with a component responsive thereto for representing impending failure of the power source. A housing for the system includes a battery-containing well that includes a channel permitting finger-access to the batteries. A pushbutton is located in a wall of the housing. An electrically-conductive probe is positioned within an ionization chamber and is associated with the pushbutton for addressing the probe in a manner that creates a simulation of the existence of combustion. In response to a signal from the ionization chamber, digital processing is employed in order to enable alarm indication as appropriate as well as to monitor continued capability of the battery power source. Special circuitry cooperates advantageously with those features as well as in interrelating the different features so as to minimize complexity.

REFERENCES:
patent: 2415297 (1947-02-01), Linton
patent: 3235858 (1966-02-01), Mader
patent: 3717862 (1973-02-01), Sasaki
patent: 3812362 (1974-05-01), Larsen et al.
patent: 3866195 (1975-02-01), Ried, Jr.
patent: 3906474 (1975-09-01), Lehsten
patent: 3909815 (1975-09-01), Gacogne
patent: 4004288 (1977-01-01), Webb, Jr.
patent: 4012729 (1977-03-01), Weaver et al.
patent: 4081684 (1978-03-01), Wieder
patent: 4083037 (1978-04-01), Larsen
patent: 4153840 (1979-05-01), Wieder

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