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224 条记录 (耗时 0.038 秒)

    Protective control circuit for induction motors
    71.
    发明授权
    Protective control circuit for induction motors 失效
    感应电动机保护控制电路

    公开(公告)号：US4196462A

    公开(公告)日：1980-04-01

    申请号：US910303

    申请日：1978-05-30

    申请人： Walter J. Pohl

    发明人： Walter J. Pohl

    IPC分类号： H02H7/093 ,  H02H7/085 ,  H02P1/44 ,  H02H7/09

    CPC分类号： H02H7/085 ,  H02P1/44

    摘要： A solid state electronic circuit for protecting a single phase induction motor against excessive loading by comparing motor start winding voltage with motor source voltage is disclosed, wherein the circuit automatically removes the motor from its driving source upon the occurrence of such excessive loading. An additional feature includes comparing start winding voltage with source voltage to remove the motor from its driving source upon the occurrence of excessive start winding voltage and corresponding excessive high motor speed. A motor starting circuit to permit the start winding voltage to rise to its normal running level and a time delay restarting circuit to permit the motor to automatically restart after elapse of a selected lock out period following removal of the motor from the source due to insufficient or excessive loading is also provided.

    摘要翻译： 公开了一种用于通过将电动机起动绕组电压与电动机源电压进行比较来保护单相感应电动机免于过载的固态电子电路，其中在发生这种过度负载时，电路自动从其驱动源移除电动机。 一个附加功能包括将起动绕组电压与源电压进行比较，以便在发生过大的起动绕组电压和相应的过高的电机转速时，将电机从其驱动源中移除。 电动机启动电路，允许起动绕组电压上升到其正常运行电平;以及时间延迟重启电路，以允许电动机在经过选择的锁定时间段之后自动重新启动，这是由于电动机从源起不足或由于不充分而导致的， 还提供过量的装载。

    Electronic output circuit for vacuum cleaners
    72.
    发明授权
    Electronic output circuit for vacuum cleaners 失效
    真空吸尘器电子输出电路

    公开(公告)号：US4163999A

    公开(公告)日：1979-08-07

    申请号：US867998

    申请日：1978-01-09

    申请人： Bradley C. Eaton ,  Thomas M. Taylor

    发明人： Bradley C. Eaton ,  Thomas M. Taylor

    IPC分类号： G01P1/10 ,  H02H7/093 ,  H02H7/08

    CPC分类号： H02H7/093 ,  G01P1/10

    摘要： An upright vacuum cleaner having a brush roller rotatably driven by a belt from the cleaner motor and having a safety device for protecting the belt and motor when the brush rotation falls below a predetermined speed. The device includes a magnet in the brush roller, a rotation sensing circuit for generating a pulse for each revolution of the magnet and a motor shut-off circuit controlled by the sensing circuit to shut-off power to the motor when the pulse rate falls below that desired.

    摘要翻译： 一种立式真空吸尘器，具有由清洁器电动机由皮带驱动的刷辊，并具有用于当电刷旋转低于预定速度时保护皮带和电动机的安全装置。 该装置包括刷辊中的磁体，用于产生磁体每转的脉冲的旋转感测电路和由感测电路控制的电动机切断电路，以当脉率低于时关闭电动机的电力 那个想要的

    Safety arrangement for starting motor in internal combustion engines
    73.
    发明授权
    Safety arrangement for starting motor in internal combustion engines 失效
    内燃机起动电机的安全安装

    公开(公告)号：US3712283A

    公开(公告)日：1973-01-23

    申请号：US3712283D

    申请日：1971-09-07

    申请人： BOSCH GMBH ROBERT

    发明人： KIESS A ,  GUNSSER P ,  KUHN E

    IPC分类号： F02N11/08 ,  H02H7/09 ,  H02H7/093 ,  F02N17/00

    CPC分类号： F02N11/0848 ,  F02N11/105 ,  H02H7/09 ,  H02H7/093

    摘要： First pulses sequence has repetition rate varying as a function of engine speed. Each pulse is extended in time by a predetermined time interval. The so-extended pulses and the original pulses each applied at one input of an AND gate which furnishes an output when the interval between pulses of the pulse sequence is shorter than the predetermined time interval. Output of AND gate de-energizes starting motor. Starting motor also deenergized for a predetermined time period following deenergization. regardless of speed of engine.

    摘要翻译： 第一脉冲序列的重复率随着发动机转速的变化而变化。 每个脉冲在时间上延长预定的时间间隔。 在脉冲序列的脉冲之间的间隔比预定的时间间隔短的AND门的一个输入处，所述扩展脉冲和原始脉冲各自被提供。 与门的输出使启动电机断电。 断电后，启动电机也断电一段预定的时间。 不管发动机的速度如何。

    Electric circuit for preventing the burning of an electric motor
    74.
    发明授权
    Electric circuit for preventing the burning of an electric motor 失效
    用于防止电动机燃烧的电路

    公开(公告)号：US3609456A

    公开(公告)日：1971-09-28

    申请号：US3609456D

    申请日：1970-05-11

    申请人： OLYMPUS OPTICAL LTD

    发明人： KAYAGUCHI MASAO ,  IKUNO YUJI

    IPC分类号： H02H7/08 ,  H02H7/085 ,  H02H7/09 ,  H02H7/093

    CPC分类号： H02H7/093 ,  H02H7/08 ,  H02H7/085 ,  H02H7/09

    摘要： Electric circuit for preventing the burning of an electric motor energized by an electric source through the electric circuit. The electric circuit has a memory circuit actuated by a setting input pulse and reset by a resetting input pulse, a timing circuit connected to said memory circuit so as to be actuated thereby when the same is actuated while the timing circuit is rendered to be inoperative when the memory circuit is reset or a resetting input pulse is applied to the timing circuit, a relay connected to the timing circuit so as to be energized when the same is actuated, and a switch operatively coupled with the relay so as to energize the motor when the relay is energized while the motor is deenergized by the switch when the relay is deenergized, thereby permitting the motor to continue to be driven upon application of the setting input pulse to the memory circuit until the resetting input pulse is applied thereto. The timing circuit comprises a monostable multivibrator having a predetermined holding time which is selected to be suitable for preventing the burning of the motor under the overloaded condition. Thus, the motor is automatically deenergized after the energization thereof by virtue of the holding time before the resetting input pulse is applied to the memory circuit under the overloaded condition of the motor, while the reenergization of the motor by applying a further setting input pulse to the memory circuit is prevented until a resetting input pulse is applied to the memory circuit prior to the application of the further setting input pulse thereto.

    Electric motor with overload cut-out
    75.
    发明授权
    Electric motor with overload cut-out 失效
    具有过载切断功能的电动马达

    公开(公告)号：US3553557A

    公开(公告)日：1971-01-05

    申请号：US3553557D

    申请日：1968-06-18

    申请人： KORTHAUS HELMUT ,  WILKE RICHARD

    发明人： KORTHAUS HELMUT ,  WILKE RICHARD

    IPC分类号： G01P3/488 ,  H02H7/085 ,  H02H7/093 ,  H02K17/30

    CPC分类号： G01P3/488 ,  H02H7/085 ,  H02H7/093 ,  H02K17/30

    摘要： AN ELECTRIC MOTOR WITH PRE-SELECTED NUMBER OF REVOLUTIONS AND SWITCHABLE IN TWO DIRECTIONS OF ROTATION, WHICH COMPRISES A STATOR INCLUDING A STATOR-WINDING, A MOTOR SHAFT, A ROTOR FORMED AS A SLIDER AND MOUNTED ON THE MOTOR SHAFT, AS WELL AS INCLUDING AN OVERLOAD CUT-OUT MEANS, AND A MOTOR HOUSING RECEIVING THE STATOR AND THE ROTOR. THE OVERLOAD CUT-OUT MEANS COMPRISING AN OVERLOAD COUPLING OPERATIVELY CONNECTED WITH THE ROTOR AND THE MOTOR SHAFT, RESPECTIVELY, SO THAT THE OVERLOAD COUPLING TRANSMITS THE MOTOR TORQAUE FROM THE ROTOR TO THE MOTOR SHAFT. THE MOTOR SHAFT COMPRISES TWO SHAFTS DISPOSED COAXIALLY RELATIVE TO EACH OTHER AND ONE OF SAID TWO SHAFTS IS HOLLOW AND RECEIVES THE OTHER OF THE TWO SHAFTS, TO CONSTITUTE THE OUTPUT SHAFT AND CARRYING THE ROTOR. THE HOLLOW ONE OF SAID SHAFTS AND THE OTHER OF SAID SHAFTS ARE FORMED FOR A PART OF THEIR LENGTH AS A THREADED SPINDLE AND A THREADED SPINDLE NUT, RESPECTIVELY, ENGAGING EACH OTHER. THE OVERLOAD COUPLING COMPRISES A DISK-SHAPED BODY SITTING RIGIDLY ON THE HOLLOW ONE OF THE SHAFTS AND HAS ABOUT ITS PERIPHERY A PLURALITY OF EQUALLY DIVIDED AXIAL BORES.