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    Drive circuits for solid state clock displays
    4.
    发明授权
    Drive circuits for solid state clock displays 失效
    用于固态时钟显示的驱动电路

    公开(公告)号：US3567908A

    公开(公告)日：1971-03-02

    申请号：US3567908D

    申请日：1969-01-23

    Applicant: GEN TIME CORP

    Inventor： INGENITO MICHAEL J

    IPC: G04G9/06 ,  H03K23/00 ,  H05B3/10 ,  H01J39/12

    CPC classification number: G04G9/06 ,  H03K23/001

    Abstract: The disclosed solid state clock drive circuit comprises cascaded ring counters, whose stages comprise at least one heater element and one thermistor. A bistable switch, in response to timing pulses, alternately connects alternate stages of each ring counter to a current source such that energizing current flows through only one stage of each ring counter. Thermal coupling between the heater element and thermistor of adjacent stages controls the transfer of energizing current flow from stage to stage upon operation of the switches. A material applied to each heater element produces a visual effect when heated, thus developing a time display.

    Synchronous motor
    7.
    发明授权
    Synchronous motor 失效
    同步电机

    公开(公告)号：US3869627A

    公开(公告)日：1975-03-04

    申请号：US37402273

    申请日：1973-06-27

    Applicant: GEN TIME CORP

    Inventor： INGENITO MICHAEL J ,  CORSER PAUL J

    IPC: G04C15/00 ,  H02K21/08

    CPC classification number: G04C15/00

    Abstract: A synchronous self-starting timer motor having a disc shaped rotor with an annular ring of permanently magnetized poles about the periphery thereof. The magnetized poles are of alternately opposite polarity with the magnetic fields generated thereby being substantially perpendicular to the plane of the rotor. The stator includes a core having at least one pole pair which defines an axial air gap through which the magnetized annular pole portion of the rotor passes. Proximate each pole of the stator is a protrusion which extends in a direction parallel to the plane of the rotor and which perturbs the magnetic field passing between the poles such that the motor becomes selfstarting when exited by an electrical current. The stator also has an energizing winding which induces an alternating or pulsating flux field in the core of the stator which field coacts with the field of the rotor to drive the rotor at a speed proportional to the frequency of the flux field. The rotor has a low moment of inertia, is light in weight and has a large magnetic working area so that the synchronous motor is capable of generating high torque at a low input power level.

    Abstract translation: 一种具有盘形转子的同步自启动定时电动机，其具有围绕其周边的永久磁化磁极的环形环。 磁化极与所产生的磁场具有交替相反的极性，从而基本上垂直于转子的平面。 定子包括具有至少一个极对的芯，其限定了转子的磁化环形极部通过的轴向气隙。 定子的每个极的近似是在平行于转子的平面的方向上延伸的突起，其扰动通过极之间的磁场，使得当由电流退出时电机变为自启动。 定子还具有激励绕组，其在定子的磁芯中引起交变或脉动的磁场，该磁场与转子的磁场共同作用，以与磁通场的频率成比例的速度驱动转子。 转子转动惯量小，重量轻，磁性工作面积大，能够在低输入功率水平下产生高转矩。

    Synchronous reluctance motor
    8.
    发明授权
    Synchronous reluctance motor 失效
    同步电机

    公开(公告)号：US3576455A

    公开(公告)日：1971-04-27

    申请号：US3576455D

    申请日：1969-11-05

    Applicant: GEN TIME CORP

    Inventor： INGENITO MICHAEL J

    IPC: G04C3/16 ,  G04C5/00 ,  G04C15/00 ,  H02K19/06 ,  H02K29/00

    CPC classification number: H02K19/06 ,  G04C3/165 ,  G04C5/005 ,  G04C15/00

    Abstract: A synchronous reluctance motor particularly useful as a clock drive motor. The motor includes a stator having an airgap and a rotor having spaced teeth of magnetic material which travel in a circular path and pass through the airgap of the stator. A magnetic flux is established periodically in the stator airgap in timed relation to an approaching tooth. The timing is such that flux buildup in the airgap occurs when an approaching tooth is closer to the airgap than a receding tooth, and the flux is approximately zero when the tooth is at the center of the airgap. Hence, there is no retarding force on a tooth as it leaves the airgap. The pulsating flux is established, in one embodiment, by a power source which supplies periodic current pulses to the stator winding. In another embodiment, the power source has a sinusoidal wave form, and a magnetic shunt paralleling the stator airgap converts the sinusoid into a series of current pulses for energizing the stator winding.

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