Dual ionization chamber
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United States of America Patent
Stats
-
Jan 13, 1981
Grant Date -
N/A
app pub date -
Apr 24, 1978
filing date -
Apr 24, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an electronic smoke sensing and alarm device, a dual ionization chamber arrangement comprises a single source of radioactive material and first and second chambers separated by a common electrically conductive electrode. A portion of the radioactive material ionizes the air in the first chamber and another portion of the radioactive material ionizes the air in the second chamber. This arrangement provides an accurate control on the current flow through each chamber.
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