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    Speed control circuit for an electric motor
    2.
    发明授权
    Speed control circuit for an electric motor 失效
    电动机速度控制电路

    公开(公告)号：US4774444A

    公开(公告)日：1988-09-27

    申请号：US42234

    申请日：1987-04-24

    Applicant: Paul H. Werner

    Inventor： Paul H. Werner

    IPC: G09F11/10 ,  H02P7/295 ,  H02P7/298 ,  H02P5/16

    CPC classification number: G09F11/10 ,  H02P7/295 ,  H02P7/298 ,  Y10S388/918 ,  Y10S388/921 ,  Y10S388/93

    Abstract: A speed motor control circuit for an electric motor of the type which drives a louvered sign assembly between predetermined rotational positions. The speed control includes a silicon controlled rectifier which is connected in series between the motor and the power supply. A unijunction transistor has one of its bases connected to the gate of the silicon controlled rectifier to switch on, or activate, the silicon controlled rectifier whenever the unijunction transistor becomes conductive. A variable resistor controls the bias to the emitter for the unijunction transistor in order to vary the time period or duty cycle that the unijunction transistor conducts and thus the time period or duty cycle that the silicon controlled rectifier is in its conductive state. A switch assembly and timing module are also employed to activate the motor at predetermined time intervals and for a predetermined angular rotation of the motor shaft.

    Abstract translation: 一种用于在预定旋转位置之间驱动百叶窗标志组件的类型的电动机的速度电动机控制电路。 速度控制包括串联在电动机和电源之间的可控硅整流器。 单结晶体管的一个基极连接到可控硅整流器的栅极，以在单结晶体管导通时导通或激活可控硅整流器。 可变电阻器控制用于单结晶体管的发射极的偏置，以便改变单结晶体管导通的时间周期或占空比，从而改变可控硅整流器处于其导通状态的时间周期或占空比。 还使用开关组件和定时模块来以预定的时间间隔和电动机轴的预定角度旋转来启动电动机。

    Teleindicator for information boards
    3.
    发明授权
    Teleindicator for information boards 失效
    信息委员会的电话指示

    公开(公告)号：US4342992A

    公开(公告)日：1982-08-03

    申请号：US171094

    申请日：1980-07-22

    Applicant: Vittorio Bozzini

    Inventor： Vittorio Bozzini

    IPC: G04G7/00 ,  G04C11/00 ,  G04C13/00 ,  G08B5/00 ,  G08C19/00 ,  G09F11/06 ,  G09F11/10 ,  G08B5/14

    CPC classification number: G09F11/06 ,  G09F11/10

    Abstract: A teleindicator for information boards is described. The main characteristic of the teleindicator consists in comprising first means for the registration of input signals relating to an indication which has to be presented by the said teleindicator, second means adapted to process the signals from the said first means and to control third means which actuate, in a mechanical way, the display of the said indication by means of indicator elements.

    Abstract translation: 描述了信息板的电视指示器。 电视指示器的主要特征在于包括：第一装置，用于登记与由所述电报指示必须呈现的指示相关的输入信号;第二装置，适于处理来自所述第一装置的信号，以及控制第三装置， 以机械方式，通过指示元件显示所述指示。

    FLAG ACTUATION SYSTEM FOR A LIGHTING FIXTURE
    9.
    发明公开
    FLAG ACTUATION SYSTEM FOR A LIGHTING FIXTURE 审中-公开

    公开(公告)号：US20230316958A1

    公开(公告)日：2023-10-05

    申请号：US18295740

    申请日：2023-04-04

    Applicant: HARMAN PROFESSIONAL DENMARK APS

    Inventor： Niels Jorgen RASMUSSEN

    IPC: G09F17/00 ,  F21V21/30 ,  G09F11/10

    CPC classification number: G09F17/00 ,  F21V21/30 ,  G09F11/10

    Abstract: A flag actuation system for a lighting fixture is disclosed. The flag actuation system comprises an actuator, an actuator axle connected to and drivable by the actuator, and at least two flags, each flag being movable between a first position in which the flag is arranged in an optical path defined by the flag actuation system, and a second position in which the flag is arranged out of the optical path. Each flag is individually and detachably connectable to the actuator axle via a magnetic actuator connection, and each flag is retainable in the first position by means of a first magnetic retaining connection and in the second position by means of a second magnetic retaining connection.

    Opto-electric central system for a reversible electric motor
    10.
    发明授权
    Opto-electric central system for a reversible electric motor 失效
    用于可逆电动机的光电中心系统

    公开(公告)号：US5162712A

    公开(公告)日：1992-11-10

    申请号：US645465

    申请日：1991-01-24

    Applicant: Donald C. Rockola ,  Shuja Haque

    Inventor： Donald C. Rockola ,  Shuja Haque

    IPC: G07F9/02 ,  G07F17/30 ,  G09F11/06 ,  G09F11/10

    CPC classification number: G07F17/305 ,  G09F11/06 ,  G09F11/10

    Abstract: A compact disc program display mechanism in which album covers are displayed on pages similar to a book presentation; each album having a selection indicia visually associated therewith for selection by the customer. The several pages are turned in response to energization of an electrical drive motor and gear train, controlled manually by customer accessible push button switches or automatically by a programmed microprocessor. Each energization of the motor serves to pivotally turn a pair of pages in one direction with the indexing movements of the pages being controlled by an opto-switch and the microprocessor for deenergizing the drive motor at predetermined page movement. Reverse movement of the pages is also conditioned by the opto-switch which signals the micro-processor to reverse the rotational direction of the drive motor. Each page displays album covers on both its front and back sides for customer viewing.

    Abstract translation: 一种光盘程序显示机构，其中专辑封面显示在类似于书展示的页面上; 每个相册具有视觉上与之相关联的选择标记，供客户选择。 响应于电驱动马达和齿轮系的通电而转动几页，由用户可访问的按钮开关手动控制或由编程的微处理器自动控制。 电动机的每次通电用于在一个方向上枢转地转动一页，同时页面的分度运动由光开关控制，微处理器用于在预定页面移动时使驱动电动机断电。 页面的反向运动也受到信号通过微处理器反转驱动电机的旋转方向的光开关的调节。 每个页面都在其前后显示专辑封面，供客户查看。

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