Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1997-09-11
2000-05-02
Tong, Nina
Communications: electrical
Condition responsive indicating system
Specific condition
3406936, 34069311, G08B 1710
Patent
active
060577754
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.
REFERENCES:
patent: 3767917 (1973-10-01), Lampart et al.
patent: 4315594 (1982-02-01), Niederost
Akiyama Nobuyuki
Sakurai Kazuyoshi
Nittan Company Limited
Tong Nina
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