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    Optical smoke detector
    1.
    发明授权
    Optical smoke detector 失效
    光学烟雾探测器

    公开(公告)号：US3863076A

    公开(公告)日：1975-01-28

    申请号：US38205873

    申请日：1973-07-24

    Applicant: ELECTRO SIGNAL LAB

    Inventor： STEELE DONALD F ,  ENEMARK ROBERT B

    IPC: G01J1/02 ,  G01N21/53 ,  G08B17/10 ,  G08B17/107 ,  G01N21/26

    CPC classification number: G08B17/107 ,  G08B17/113

    Abstract: An optical smoke detector comprises split optical block mounting an exciter lamp and a smoke sensing photocell in two passages directed toward an intersection zone in a dark chamber formed by one side of the block, a base with a bottom and side wall and a cover, all secured together by one screw. A light pipe from the lamp extends outside the cover to indicate lamp operation. A second photocell is in a third passage communicating with the lamp passage, the third passage mounting diffuser and pin hole apertured disks for spreading a controlled light intensity over the second photocell. The optical block assembly includes an alarm circuit board operatively connected to the photocells and physically positioning the block on the base.

    Abstract translation: 光学烟雾探测器包括分离光学块，其安装激励器灯和烟雾感测光电池，两个通道指向由块的一侧形成的暗室中的交叉区域，具有底部和侧壁以及盖子的基座，全部 用一个螺丝固定在一起。 来自灯的光管延伸到盖的外部，以指示灯的操作。 第二光电管在与灯通道连通的第三通道中，第三通道安装扩散器和针孔孔径盘，用于在第二光电池上扩展受控的光强度。 光学块组件包括可操作地连接到光电池并且将块物理地定位在基座上的报警电路板。

    Vaned baffle for optical smoke detector
    3.
    发明授权
    Vaned baffle for optical smoke detector 失效
    用于光学烟雾探测器的透平挡板

    公开(公告)号：US3916209A

    公开(公告)日：1975-10-28

    申请号：US45882974

    申请日：1974-04-08

    Applicant: ELECTRO SIGNAL LAB

    Inventor： STEELE DONALD F ,  ENEMARK ROBERT B

    IPC: G08B17/107 ,  G01N21/26

    CPC classification number: G08B17/107 ,  G08B17/113

    Abstract: An optical smoke detector comprises split optical block mounting an exciter lamp and a smoke sensing photocell in two passages directed toward an intersection zone in a dark chamber formed by one side of the block, a base with a bottom and side wall and a cover, all secured together by one screw. A light pipe from the lamp extends outside the cover to indicate lamp operation. A second photocell is in a third passage communicating with the lamp passage, the third passage mounting diffuser and pin hole apertured disks for spreading a controlled light intensity over the second photocell. The optical block assembly includes an alarm circuit board operationally connected to the photocells and physically positioning the block on the base. Smoke enters the dark chamber through passages formed by curved, light obstructing vanes converging toward an opening to the chamber between the opening and a baffle.

    Abstract translation: 光学烟雾探测器包括分离光学块，其安装激励器灯和烟雾感测光电池，两个通道指向由块的一侧形成的暗室中的交叉区域，具有底部和侧壁以及盖子的基座，全部 用一个螺丝固定在一起。 来自灯的光管延伸到盖的外部，以指示灯的操作。 第二光电管在与灯通道连通的第三通道中，第三通道安装扩散器和针孔孔径盘，用于在第二光电池上扩展受控的光强度。 光学块组件包括可操作地连接到光电管并且将块物理地定位在基座上的报警电路板。 烟雾通过由弯曲的光阻挡叶片通过通道形成的通道进入暗室，该叶片在开口和挡板之间朝向腔室的开口会聚。

    LED SMOKE DETECTOR CIRCUIT
    4.
    发明专利
    LED SMOKE DETECTOR CIRCUIT 未知

    公开(公告)号：CA1051539A

    公开(公告)日：1979-03-27

    申请号：CA242726

    申请日：1975-12-30

    Applicant: ELECTRO SIGNAL LAB

    Inventor： ENEMARK ROBERT B

    IPC: G08B17/107 ,  G01N21/28 ,  G08B17/10

    Abstract: A simplified smoke or other particle detector circuit includes a light emitting diode in series with a compensating photocell and a photocell sensing LED light scattered from particles. In parallel with the LED is a high resistance, and in parallel with the photocells is a low resistance, the resistances having a common junction coupled to a threshold circuit input as is the output of the photocells. Sensing smoke produces a photocell output which triggers the threshold device to generate an alarm signal. Failure of the LED produces a voltage at the resistance junction which similarly triggers the threshold device to alarm.

    OPTICAL SMOKE DETECTOR
    5.
    发明专利
    OPTICAL SMOKE DETECTOR 未知

    公开(公告)号：CA1022644A

    公开(公告)日：1977-12-13

    申请号：CA185558

    申请日：1973-11-13

    Applicant: ELECTRO SIGNAL LAB

    Inventor： STEELE DONALD F ,  ENEMARK ROBERT B

    IPC: G01J1/02 ,  G01N21/53 ,  G08B17/10 ,  G08B17/107

    Abstract: An optical smoke detector comprises split optical block mounting an exciter lamp and a smoke sensing photocell in two passages directed toward an intersection zone in a dark chamber formed by one side of the block, a base with a bottom and side wall and a cover, all secured together by one screw. A light pipe from the lamp extends outside the cover to indicate lamp operation. A second photocell is in a third passage communicating with the lamp passage, the third passage mounting diffuser and pin hole apertured disks for spreading a controlled light intensity over the second photocell. The optical block assembly includes an alarm circuit board operatively connected to the photocells and physically positioning the block on the base.

    VANED BAFFLE FOR OPTICAL SMOKE DETECTOR
    6.
    发明专利
    VANED BAFFLE FOR OPTICAL SMOKE DETECTOR 未知

    公开(公告)号：CA1022645A

    公开(公告)日：1977-12-13

    申请号：CA203949

    申请日：1974-07-03

    Applicant: ELECTRO SIGNAL LAB

    Inventor： STEELE DONALD F ,  ENEMARK ROBERT B

    IPC: G08B17/107

    Abstract: An optical smoke detector comprises split optical block mounting an exciter lamp and a smoke sensing photocell in two passages directed toward an intersection zone in a dark chamber formed by one side of the block, a base with a bottom and side wall and a cover, all secured together by one screw. A light pipe from the lamp extends outside the cover to indicate lamp operation. A second photocell is in a third passage communicating with the lamp passage, the third passage mounting diffuser and pin hole apertured disks for spreading a controlled light intensity over the second photocell. The optical block assembly includes an alarm circuit board operationally connected to the photocells and physically positioning the block on the base. Smoke enters the dark chamber through passages formed by curved, light obstructing vanes converging toward an opening to the chamber between the opening and a baffle.

    SMOKE DETECTOR FAILURE ALARM
    7.
    发明专利
    SMOKE DETECTOR FAILURE ALARM 未知

    公开(公告)号：CA981754A

    公开(公告)日：1976-01-13

    申请号：CA165084

    申请日：1973-03-02

    Applicant: ELECTRO SIGNAL LAB

    Inventor： ENEMARK ROBERT B

    IPC: G08B17/107

    Abstract: In a smoke detector a regulated, half-wave rectifier supplies power for an exciter lamp, a photocell shielded from the lamp but viewing an area illuminated by the lamp, and a relay switching circuit triggered by the cell for applying the half-wave current to the winding of a horn so as to cause the horn to sound at the half-wave frequency when the cell senses smoke scattered from the illuminated area. The switching circuit for the horn can also be triggered by a thermostatic switch responsive to high ambient temperature. Failure of the exciter lamp or voltage regulator deenergizes the relay, switching in a pulsing circuit which sounds the horn at a distinctively different frequency than the smoke alarm.

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