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135 条记录 (耗时 0.014 秒)

    Arrangement for driving the drum of a washing machine
    41.
    发明授权
    Arrangement for driving the drum of a washing machine 失效
    用于驱动洗衣机的喷枪的装置

    公开(公告)号：US3764822A

    公开(公告)日：1973-10-09

    申请号：US3764822D

    申请日：1972-06-29

    申请人： PHILIPS CORP

    发明人： EBBINGE W ,  DE RUITER C

    IPC分类号： H02P7/295 ,  H02P25/10 ,  H01H7/00

    CPC分类号： H02P25/10 ,  H02P7/295 ,  Y10S388/917 ,  Y10S388/934 ,  Y10T307/951

    摘要： Arrangement including a self-commutating electric motor for driving the drum of a washing machine. The electric heating element of the washing machine is connected in the supply circuit in series with the motor. This supply circuit further contains a first rectifier which is connected in series with the motor and becomes conducting at the passages through zero of the supply voltage. Speed control of the motor is effected by means of a second rectifier which is of a bidirectional type and which shunts the series combination of the motor and the first rectifier and is set to the conductive condition by means of control pulses. The power dissipated by the heating element may also be regulated by means of this second rectifier.

    摘要翻译： 包括用于驱动洗衣机的滚筒的自换向电动机的布置。 洗衣机的电加热元件与电动机串联连接在电源电路中。 该电源电路还包括与电动机串联连接的第一整流器，并且在通过供电电压的零点的通路处导通。 电动机的速度控制是借助于双向型的第二整流器来实现的，并且其分流电动机和第一整流器的串联组合并且通过控制脉冲被设置为导通状态。 由加热元件消耗的功率也可以通过该第二整流器来调节。

    Tool carrier and speed control therefor
    42.
    发明授权
    Tool carrier and speed control therefor 失效
    工具运输和速度控制

    公开(公告)号：US3761789A

    公开(公告)日：1973-09-25

    申请号：US3761789D

    申请日：1972-04-17

    申请人： KRAFFT L ,  BATTIN J

    发明人： BATTIN J ,  KRAFFT L

    IPC分类号： H02P25/10 ,  H02P5/16

    CPC分类号： H02P25/10 ,  Y10S388/919 ,  Y10S388/93

    摘要： A tool carrier having a rotary portion and a control circuit operative to control the same at a selected speed, the control circuit having an output voltage which is a function of the speed of the rotary portion, the rotary portion including means for generating a signal voltage which is fed to the control circuit, where the rectified value thereof operates to vary the output voltage thereof in such a manner that a preselected speed of the rotary portion is maintained over varying load conditions.

    摘要翻译： 一种具有旋转部分和可操作以选定速度控制该旋转部分的控制电路的工具架，所述控制电路具有作为旋转部分速度的函数的输出电压，所述旋转部分包括用于产生信号电压的装置 其馈送到控制电路，其中其整流值操作以改变其输出电压，使得在变化的负载条件下保持旋转部分的预选速度。

    Valve control system
    43.
    发明授权
    Valve control system 失效
    阀门控制系统

    公开(公告)号：US3659171A

    公开(公告)日：1972-04-25

    申请号：US3659171D

    申请日：1970-07-24

    申请人： PHILLIPS PETROLEUM CO

    发明人： MORGAN JOHN A

    IPC分类号： B01J4/02 ,  C08F10/00 ,  H02P25/10 ,  H02P5/10

    CPC分类号： H02P25/10 ,  B01J4/02 ,  C08F10/00 ,  C08F2/38

    摘要： Apparatus is provided for actuating an intermittent motion control element, such as a rotary valve. A pulse generator establishes periodic actuating pulses at a frequency corresponding to the amplitude of a control signal. Rotation of a motor is regulated by these pulses through control circuits which can include a time delay relay to hold the motor stationary for a given time at a selected point in the cycle.

    摘要翻译： 提供用于致动间歇运动控制元件（例如旋转阀）的装置。 脉冲发生器以对应于控制信号的幅度的频率建立定期的致动脉冲。 电动机的旋转通过控制电路由这些脉冲调节，控制电路可以包括时间延迟继电器，以在循环中的选定点保持电机静止一定时间。

    Variable-speed hoist control
    44.
    发明授权
    Variable-speed hoist control 失效
    变速箱控制

    公开(公告)号：US3628115A

    公开(公告)日：1971-12-14

    申请号：US3628115D

    申请日：1969-06-02

    申请人： UNI LIGHT HOIST AND REEL INC

    发明人： PRUITT DANA L

    IPC分类号： H02P25/10 ,  B66C13/24 ,  B66D1/40 ,  B66D3/18 ,  B66D3/22 ,  H02P7/28

    CPC分类号： B66D3/22 ,  B66C13/24 ,  B66D3/18 ,  B66D2700/026

    摘要： A hoist of light weight and high capacity with infinitely variable speed and holding characteristics. A sprocket engaged with a roller chain is driven through a multiple-stage spur gear reduction train by a high-speed universal reversible electric motor energized through a modified silicon control rectifier. The reduction gears are of high-tensile alloy steel, mounted on roller bearings to give an efficient drive, and the gear reduction is of such high ratio as to make the gear train irreversible under the rated load of the hoist, so that the SCR control of the high-speed motor gives positive variable-speed lifting, lowering, and holding control of the rated load. The motor control circuit includes a leakage resistor connected across the conducting electrodes of the SCR to inhibit any reversal of the motor.

    Circuit arrangement for establishing an energizing circuit for alternating current induction motors
    45.
    发明授权
    Circuit arrangement for establishing an energizing circuit for alternating current induction motors 失效
    用于建立用于替代电流感应电动机的电能电路的电路装置

    公开(公告)号：US3560825A

    公开(公告)日：1971-02-02

    申请号：US3560825D

    申请日：1968-11-29

    申请人： GEN MOTORS CORP

    发明人： ELLIOTT JAMES O

    IPC分类号： H02P25/10 ,  H02P5/40

    CPC分类号： H02P25/10

    摘要： A circuit arrangement for establishing an energizing circuit for alternating current induction motors across a compatible alternating current supply potential source. Two silicon controlled rectifiers, each with a resistor connected across the gate-cathode electrodes thereof, are connected in parallel with each other in an opposite polarity relationship and in series with the motor to be energized and the alternating current input circuit terminals of a full wave diode bridge type rectifier circuit are connected across the silicon controlled rectifiers. Electrical trigger signals produced by an associated control circuit during each potential half cycle of the alternating current supply potential are applied across the negative output terminal of the bridge rectifier circuit and the alternating current input terminals thereof through the respective resistors, in parallel.