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    Self-stopping motor control circuit
    21.
    发明授权
    Self-stopping motor control circuit 失效
    自动停机电机控制电路

    公开(公告)号：US4857813A

    公开(公告)日：1989-08-15

    申请号：US26707

    申请日：1987-03-17

    Applicant: Yasuki Matsumoto ,  Masaru Kato

    Inventor： Yasuki Matsumoto ,  Masaru Kato

    IPC: E05F15/16 ,  H02P3/08

    CPC classification number: H02P3/08 ,  E05F15/695 ,  E05Y2900/55

    Abstract: A motor control circuit is disclosed, which comprises an operation switch to issue the forward rotation or reverse rotation signal, driving means to operate the motor to the forward or reverse direction in response to the forward rotation or reverse rotation signal from said operation switch, rotation detecting means to detect the rotating condition of the motor, and stopping means to cut off the power to said motor when, during the operation of the operation switch, the rotation detecting means continues to detect, for a certain period of time, that the rotation of the motor has been stopped.

    Abstract translation: 公开了一种电动机控制电路，其包括用于发出正转或反向旋转信号的操作开关，响应于来自所述操作开关的正向或反向旋转信号而将电动机正向或反向操作的驱动装置，旋转 检测装置，用于检测电动机的旋转状态;以及停止装置，用于在所述操作开关的操作期间所述旋转检测装置继续检测所述电动机的转动时切断所述电动机的动力 的电机已经停了。

    Torch for gas-shield arc welding in deep narrow groove
    23.
    发明授权
    Torch for gas-shield arc welding in deep narrow groove 失效
    手电筒在深沟槽中进行气体保护电弧焊

    公开(公告)号：US4495401A

    公开(公告)日：1985-01-22

    申请号：US403506

    申请日：1982-07-12

    Applicant: Viktor V. Sidorov ,  Efim Y. Tselniker ,  Evgeny P. Sidorov ,  Leonid V. Sukhov ,  Vyacheslav F. Gorb ,  Gennady M. Bairakovsky

    Inventor： Viktor V. Sidorov ,  Efim Y. Tselniker ,  Evgeny P. Sidorov ,  Leonid V. Sukhov ,  Vyacheslav F. Gorb ,  Gennady M. Bairakovsky

    IPC: B60L7/04 ,  B23K9/16 ,  B23K9/173 ,  B23K9/26 ,  B23K9/29 ,  H02P3/08 ,  H02P3/12 ,  H02P3/14 ,  H02P7/28

    CPC classification number: H02P3/08 ,  B23K9/173 ,  H02P7/2815

    Abstract: A torch for gas-shielded arc welding in a deep narrow groove comprises a current contact torch bit (1) with an electrode (2) and a nozzle for supplying the shielding gas to the welding zone, which communicates with a gas-feeding tube (4) and is provided with at least one row of horizontally arranged holes (5). The nozzle is a closed chamber (3) made as a symmetrical wedge whose sharp edge faces the electrode (2) and is in one plane with the axis thereof. The side walls and bottom of the chamber (3) feature at least one additional row of holes (6) whose axes lie in one plane approximately perpendicular to the walls (7) of the groove.The torch is designed primarily for welding of very thick workpieces.

    Abstract translation: PCT No.PCT / SU80 / 00195 Sec。 371日期1982年7月12日 102（e）日期1982年7月12日PCT提交1980年11月28日PCT公布。 出版物WO82 / 01840 日期：1982年6月10日。深沟槽中的气体保护电弧焊的焊炬包括具有电极（2）的电流触头炬钻头（1）和用于将保护气体供应到焊接区域的喷嘴， 具有气体供给管（4），并且设置有至少一排水平布置的孔（5）。 喷嘴是形成为对称楔形物的封闭腔室（3），其尖锐的边缘面对电极（2），并与其轴线处于一个平面。 腔室（3）的侧壁和底部具有至少一个附加的一排孔（6），其轴线位于大​​致垂直于凹槽的壁（7）的一个平面中。 手电筒主要用于焊接非常厚的工件。

    Chopper type propulsion system with low speed electrical braking capability for traction vehicles
    24.
    发明授权
    Chopper type propulsion system with low speed electrical braking capability for traction vehicles 失效
    用于牵引车辆的具有低速电气制动能力的斩波式推进系统

    公开(公告)号：US4284936A

    公开(公告)日：1981-08-18

    申请号：US35352

    申请日：1979-05-02

    Applicant: Ronald B. Bailey ,  Thomas D. Stitt

    Inventor： Ronald B. Bailey ,  Thomas D. Stitt

    IPC: B60L7/04 ,  H02P3/08 ,  H02P3/12 ,  H02P3/14 ,  H02P7/28

    CPC classification number: H02P7/2815 ,  H02P3/08 ,  B60L2200/26 ,  Y02T10/642

    Abstract: A propulsion system for an electrically driven traction vehicle includes a chopper, a d-c traction motor, and means effective when the system is operating in a motoring mode for connecting the chopper in series with the armature and the field windings of the motor to a d-c electric power source that includes a filter capacitor. Cyclically operative means provides periodic gating signals for alternately turning on and turning off the chopper, and it can be smoothly changed from a constant frequency, variable pulse width mode to a variable frequency, constant (minimum) off time mode so as to vary the "duty factor" of the chopper over a wide range extending up to 100 percent on time. Brake set up means is operative in response to a motoring-to-braking command for reconnecting the chopper in parallel with the motor and the filter capacitor and for reversing the polarity of the connection of the series field winding relative to the armature. In response to this operation of the brake set up means, current in the field of the motor is momentarily boosted, and an extended chopper turn on signal having a duration substantially longer than that of the aforesaid periodic gating signals is supplied to the chopper to ensure that it turns on and conducts armature current to begin the braking mode of operation even if the command happens to take place at low speeds when the electromotive force of the motor is correspondingly low.

    Abstract translation: 用于电动牵引车辆的推进系统包括斩波器，直流牵引电动机和当系统以电动机模式操作的有效装置，用于将斩波器与电动机的电枢和励磁绕组串联连接到直流电 电源包括滤波电容。 循环操作装置提供周期性门控信号，用于交替地导通和关断斩波器，并且可以从恒定频率，可变脉冲模式平滑地改变到可变频率，恒定（最小）关断时间模式，以便改变“ 斩波器的占空系数“在一个广泛的范围内延伸到100％的时间。 制动装置响应于电动制动命令而起作用，用于将斩波器与电动机和滤波电容器并联重新连接，并用于反转串联励磁绕组相对于电枢的连接的极性。 响应于制动设置装置的这种操作，马达现场的电流瞬间升高，并且具有比上述周期性选通信号的持续时间显着更长的延长的斩波器接通信号被提供给斩波器以确保 即使当电动机的电动势相应地低时，命令恰好以低速发生时，其接通并且执行电枢电流以开始制动操作模式。

    Braking-mode detection circuit
    25.
    发明授权
    Braking-mode detection circuit 失效
    制动模式检测电路

    公开(公告)号：US3855512A

    公开(公告)日：1974-12-17

    申请号：US36897373

    申请日：1973-06-11

    Applicant: GEN ELECTRIC

    Inventor： KONRAD C

    IPC: B60L7/00 ,  B60L11/18 ,  H02P3/08 ,  H02P7/29

    CPC classification number: B60L11/1805 ,  H02P3/08 ,  H02P7/29 ,  Y02T10/646 ,  Y02T10/648 ,  Y02T10/7005

    Abstract: Means for detecting operation of a direct-current motor in the reversed or braking mode. Means are provided for receiving signals representative of armature current and of the mark-space conduction ratio of a motor control thyristor A rise in motor current above a predetermined value, coupled with a decline in mark-space ratio below a predetermined value, causes the disclosed circuit to produce an output signal which is utilized to temporarily limit conduction of the motor control thyristor and procure controlled deceleration.

    Abstract translation: 用于在反转或制动模式下检测直流电动机的操作的装置。 提供了用于接收代表电枢电流的信号和电动机控制晶闸管A的标记空间导通比的电动机电流高于预定值的上升，加上标记空间比的下降超过预定值，导致所公开的 产生用于临时限制电动机控制晶闸管的传导并获得受控减速度的输出信号的电路。

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