Ionization smoke detector
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 2, 2000
Grant Date -
N/A
app pub date -
Sep 11, 1997
filing date -
Oct 11, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ionization smoke detector comprising: an inner electrode; an intermediate electrode having an electrode body and an electrode piece extending from the electrode body, facing the inner electrode and connected to a field effect transistor; an outer electrode provided in an opposite side to the inner electrode with respect to the intermediate electrode; and an insulating supporter for supporting the intermediate electrodes to face the inner electrode. The supporter comprises an electrode supporting portion for supporting the intermediate electrode, having a cylindrical peripheral wall to enclose the electrode body of the intermediate electrode, a container for containing the field effect transistor, and a container supporting member for supporting the container by connecting it to the electrode supporting portion; a first notch portion for extending the electrode piece of the intermediate electrode out thereof is formed in the cylindrical peripheral wall, and a second notch portion for extending a lead wire of the field effect transistor stored in the container out of the container is formed at a position facing the first notch portion of the peripheral wall; and the electrode piece extending from the first notch portion is connected to the lead wire extending from the second notch portion.
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