Smoke detector circuit
    1.
    发明授权
    Smoke detector circuit 失效
    烟雾探测器电路

    公开(公告)号:US3812362A

    公开(公告)日:1974-05-21

    申请号:US37601173

    申请日:1973-07-02

    Applicant: HONEYWELL INC

    Inventor: LARSEN L KOBEK E

    CPC classification number: G01T7/125 G08B17/11

    Abstract: A combustion products detector system of the type having at least one ionization chamber, the combustion products sensing ionization chamber being open or accessible to the surrounding air. The output signal voltage from the chamber is connected through an FET to a four terminal voltage comparator switch, which four terminal switch has an easily adjustable threshold voltage.

    Ionization chamber with recessed radioactive body
    2.
    发明授权
    Ionization chamber with recessed radioactive body 失效
    带放射性放射性体的离子室

    公开(公告)号:US3849685A

    公开(公告)日:1974-11-19

    申请号:US37255773

    申请日:1973-06-22

    Applicant: HONEYWELL INC

    CPC classification number: G08B17/113 H01J41/08

    Abstract: An improved chamber assembly for an ionization smoke detector. The chamber assembly includes a cup shaped electrode having attached therein a radioactive source to provide the ionization in the chamber. The radioactive body which is retained in a rivet head container, or the like, is staked to the interior surface of the cup shaped electrode, and to make sure that the radioactive source or its container does not project out into the chamber area, the mounting point of the electrode is dimpled so that the face of the mounted radioactive rivet is substantially flush with the general contour of the interior surface of the electrode.

    Abstract translation: 用于电离烟雾探测器的改进的腔室组件。 腔室组件包括杯形电极,其附接有放射源以在腔室中提供电离。 将保留在铆钉头容器等中的放射体固定在杯形电极的内表面,并确保放射源或其容器不会突出到室内,安装 电极的点是凹陷的,使得安装的放射性铆钉的表面与电极的内表面的大致轮廓基本齐平。

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