Device for driving magnetic tape
    1.
    发明授权
    Device for driving magnetic tape 失效
    磁带驱动装置

    公开(公告)号:US4393422A

    公开(公告)日:1983-07-12

    申请号:US250296

    申请日:1981-04-02

    摘要: A device for intermittently driving a magnetic tape has a capstan for driving the magnetic tape, a motor directly connected to the capstan for driving the capstan, a tachometer for detecting the rotating speed of the motor and producing an output, and a speed control having a settable speed controller for setting a desired motor speed and into which the output from the tachometer is fed back for enabling the speed control to sense when the motor is rotating at the desired motor speed. An intermittent drive control is provided for supplying a triggering signal to trigger said settable speed controller to cause the settable speed controller to operate the speed control for accelerating the motor to the desired motor speed and driving it at that speed, the intermittent drive control supplying the triggering signal in response to a speed setting signal and a head switch signal. A detector for detecting a control signal recorded on the magnetic tape while the motor is being driven at the desired speed is connected to the intermittent drive control. The intermittent drive control is further responsive to the detection of the control signal for discontinuing the triggering signal after the passage of a predetermined period of time for causing the settable speed controller to decelerate the driving of the motor from the desired motor speed, whereby the position of the magnetic tape relative to the position of the recorded control signal at the end of the deceleration by the speed control is constant.

    摘要翻译: 用于间歇地驱动磁带的装置具有用于驱动磁带的绞盘,直接连接到主导轴用于驱动主导轴的马达,用于检测马达的转速并产生输出的转速计,以及具有 可设定的速度控制器,用于设定所需的电机速度,反馈器的输出反馈到该速度控制器中,以使速度控制能够感测电机何时以所需的电机速度旋转。 提供间歇驱动控制,用于提供触发信号以触发所述可设定速度控制器,以使可设定速度控制器操作用于将电动机加速到期望的电动机速度并以该速度驱动的速度控制,间歇驱动控制提供 响应于速度设置信号和头开关信号的触发信号。 用于检测在以正常速度驱动电动机时记录在磁带上的控制信号的检测器被连接到间歇驱动控制。 间歇驱动控制还响应于在经过预定时间段之后停止触发信号的控制信号的检测,以使可设定速度控制器从所需电机速度减速马达的驱动,由此位置 的磁带相对于通过速度控制的减速结束时记录的控制信号的位置是恒定的。

    Phase control circuit and magnetic reproducing apparatus using the same
    2.
    发明授权
    Phase control circuit and magnetic reproducing apparatus using the same 失效
    相位控制电路和使用该相位控制电路的磁再现装置

    公开(公告)号:US4484235A

    公开(公告)日:1984-11-20

    申请号:US275027

    申请日:1981-06-18

    摘要: A phase control circuit for improving the stability after a predictable rotational speed change of a rotating apparatus and a magnetic reproducing apparatus for performing slow motion reproduction by means of intermittent tape transport and yet being free from transverse swings of the reproduced picture comprises a phase shift circuit which shifts the phase of the reference signal, which is produced by dividing a source signal, at a desired rate, to maintain the phase locked at the very moment during which the rotational speed change is changing. The relative speed of the magnetic head rotation is kept constant during the intermittent tape movement under the condition of the phase being locked.

    摘要翻译: 用于改善旋转装置的可预测的转速变化之后的稳定性的相位控制电路和用于通过间歇磁带传送执行慢动作再现并且没有再现图像的横向摆动的磁再现装置包括相移电路 其以期望的速率偏移由源信号分压产生的参考信号的相位,以保持相位锁定在转速变化的时刻。 在相位被锁定的状态下,磁头旋转的相对速度在间歇磁带移动期间保持恒定。

    Differential output circuit
    3.
    发明授权
    Differential output circuit 失效
    差分输出电路

    公开(公告)号:US4395682A

    公开(公告)日:1983-07-26

    申请号:US220722

    申请日:1980-12-29

    CPC分类号: H03F3/3081 H02P6/14

    摘要: A differential output circuit for generating a bipolar DC current for an armature winding without requiring a bipolar power source. A combination of transistors and resistors are utilized to effectively apply a bipolar driving current. The use of only transistors and resistors in the differential output circuit enables its easy implementation as an integrated circuit.

    摘要翻译: 一种差分输出电路,用于在不需要双极电源的情况下产生用于电枢绕组的双极直流电流。 利用晶体管和电阻器的组合来有效地应用双极驱动电流。 差分输出电路中只使用晶体管和电阻,可以方便地实现集成电路。

    Drive system for a brushless DC motor
    4.
    发明授权
    Drive system for a brushless DC motor 失效
    无刷直流电机驱动系统

    公开(公告)号:US4344023A

    公开(公告)日:1982-08-10

    申请号:US208477

    申请日:1980-11-19

    IPC分类号: H02P6/08 H02P6/00 H02K29/00

    CPC分类号: H02P6/28

    摘要: A drive system for a brushless dc motor to control the magnitude of the torque of a motor which has permanent magnet rotor and Hall generators. Multipliers determine the magnitude of current to each phase armature winding so as to determine the current sharing rate among the armature windings according to the rotation angle of the rotor, whereby degrading of torque uniformity due to variation of Hall generator characteristics is avoided. Each multiplier multiplies 2 signals, one being the output of the Hall generator, the other being the difference between the torque control input and the fed back signal of total armature current. Also a torque direction input is supplied to each multiplier to determine the direction of the rotational torque.

    摘要翻译: 用于无刷直流电动机的驱动系统,用于控制具有永磁转子和霍尔发电机的电动机的转矩大小。 乘法器确定每相电枢绕组的电流的大小,以便根据转子的旋转角度来确定电枢绕组之间的电流分配率,从而避免由于霍尔发电机特性变化引起的转矩均匀性的降低。 每个乘法器乘以2个信号,一个是霍尔发生器的输出,另一个是转矩控制输入和总电枢电流的反馈信号之间的差。 此外,向每个乘数提供扭矩方向输入以确定旋转扭矩的方向。

    Apparatus for removing and collecting fiber waste from a creel stand
    5.
    发明授权
    Apparatus for removing and collecting fiber waste from a creel stand 失效
    用于从纱架架去除和收集纤维废物的设备

    公开(公告)号:US5515698A

    公开(公告)日:1996-05-14

    申请号:US226768

    申请日:1994-04-12

    摘要: Apparatus for removing and collecting fiber waste from a creel stand having multiple, juxtaposed creel sections including an air suction/blower blowing a first air stream across the top of the creel sections and creating a second air stream flowing across the bottom of the creel sections. An air deflector reciprocating across the top of the creel sections deflects the first air stream downwardly through the creel sections. A bottom plenum beneath the creel sections receives the air stream from the creel sections and confines and directs the second air stream to the suction/blower. A second blower blows air through the bottom plenum toward the suction/blower to assist the suction/blower in creating the second air stream. A plurality of baffles are included in the bottom plenum to provide laminar air flow therein.

    摘要翻译: 用于从具有多个并列的纱架部分的纱架架上去除和收集纤维废料的设备,包括空气抽吸/鼓风机,吹扫第一空气流穿过纱架部分的顶部,并产生流过纱架部分底部的第二气流。 穿过纱架部分顶部的往复运动的导风板将第一气流向下偏转通过纱架部分。 在筒子架部分下面的底部增压室接收来自筒子架部分的空气流并限制并将第二气流引导到吸入/鼓风机。 第二鼓风机将空气通过底部增压室吹向抽吸/鼓风机,以帮助吸入/鼓风机产生第二气流。 多个挡板包括在底部增压室中以在其中提供层流气流。

    Method and apparatus for adjusting the stitch length on a circular
knitting machine
    6.
    发明授权
    Method and apparatus for adjusting the stitch length on a circular knitting machine 失效
    用于在圆形针​​织机上调整针迹长度的方法和装置

    公开(公告)号:US5511392A

    公开(公告)日:1996-04-30

    申请号:US333851

    申请日:1994-11-03

    CPC分类号: D04B15/94 D04B15/18 D04B9/065

    摘要: A method of and circular knitting machine for producing a knit fabric having more uniform stitches including yarn feeders feeding a plurality of yarns to stitch forming instrumentalities, the spacing of which affects stitch length and which is subject to change during operation of the knitting machine, a sensor for sensing the tension in the plurality of yarns which changes with changes in the spacing of the stitch forming instrumentalities, and generating a signal indicative of the average tension in the yarns, a comparator for comparing the sensor signal with a pre-set desired tension, a convertor for converting the comparison result into a drive signal, and an adjuster adjusting the spacing of the stitch forming instrumentalities responsive to the drive signal.

    摘要翻译: 一种圆形针织机的制造方法,其特征在于,制造具有更均匀针迹的针织物,其中包括供给多根纱线的喂纱机进行缝合成形工具,其间距影响针迹长度,并且在针织机的操作过程中会发生变化, 传感器,用于感测多个纱线中的张力,其随着缝合形成工具的间距的变化而变化,并且产生指示纱线中的平均张力的信号;比较器,用于将传感器信号与预设的期望张力进行比较 ,用于将比较结果转换为驱动信号的转换器,以及响应于驱动信号调节针迹形成工具的间隔的调节器。

    Miniature multiple electrical connector
    7.
    发明授权
    Miniature multiple electrical connector 失效
    微型多功能电气连接器

    公开(公告)号:US5201675A

    公开(公告)日:1993-04-13

    申请号:US814405

    申请日:1991-12-23

    IPC分类号: H01R13/648 H01R13/64

    摘要: A miniature multiple electrical connector consists of a plug connector and a receptacle connector having an insulating block and a metal shell. The metal shell is fixed to the insulating block by fitting anchoring protrusions provided along both sides of the insulating block in anchoring apertures of fixing tongues provided on the metal shell. When the plug connector is being inserted into the receptacle connector, the metal shell of the receptacle connector is likely to be deformed by a metal shell of the plug connector. In order to prevent such a deformation of the metal shell, there is provided means for anchoring the center of the metal shell weakest in mechanical strength to the insulating block or means for preventing application of a force to the center of the metal shell when the plug connector is being inserted into the receptacle connector.

    Collector/remover of dust of flocks in knitting machine
    8.
    发明授权
    Collector/remover of dust of flocks in knitting machine 失效
    针织机中的收集器/去除剂

    公开(公告)号:US5177985A

    公开(公告)日:1993-01-12

    申请号:US869460

    申请日:1992-04-16

    IPC分类号: D04B35/32

    CPC分类号: D04B35/32

    摘要: Fiber waste generated adjacent the knitting section of the knitting machine and adjacent yarn feeding devices of the machine is blown to a filter adjacent the top of the machine. The lint is removed from the filter by a rotatable filter cleaner and then is transported by suction to a vacuum device outside of the machine. A blower for blowing fiber waste from the yarn feeding devices is mounted upon a support ring and undergoes reciprocal movement about a path of travel defined by such ring. In one embodiment the ring undergoes rotational movement and the blowing means moves with it, while in another embodiment the ring is stationary and the blowing means moves relative to it.

    Insulation-piercing connector
    9.
    发明授权
    Insulation-piercing connector 失效
    绝缘连接器

    公开(公告)号:US5120244A

    公开(公告)日:1992-06-09

    申请号:US675792

    申请日:1991-03-27

    IPC分类号: H01R4/24

    CPC分类号: H01R4/2433 H01R12/675

    摘要: An insulation-piercing connector includes a connector main body made of an insulating support block having inclined bases inclined in the same direction and a reverse direction and contacts embedded therein to expose contact tails. The contact tails are arranged in first, second, third and fourth rows in parallel with and spaced from each other and staggered or shifted from each other. A cover includes inclined bases inclined in reverse directions to those of the mating inclined bases of the connector main body and receiving slots for receiving the contact tails of the connector main body. Inclined surfaces of the inclined bases of the connector main body and the cover are curved surfaces. The first and second rows and the third and fourth rows of the contact tails are arranged in symmetry with respect to tops of the curved surfaces, respectively. The inclined bases of the connector main body and the cover are provided with protrusions for guiding the connection wires.

    Contact for connector
    10.
    发明授权
    Contact for connector 失效
    连接器接点

    公开(公告)号:US4717361A

    公开(公告)日:1988-01-05

    申请号:US891357

    申请日:1986-07-29

    摘要: A contact for a connector, which includes two opposed contact elements for receiving therebetween a male contact of a mating connector. Each the contact element is provided with one or more protrusions on an opposed surface for embracing the male contact. Protrusions of the two opposed contact elements extend to that portions of the opposed contact elements which are devoid of the protrusions so as to overlap each other before the male contact is inserted between the contact elements. With this arrangement, even if the male contact is very thin, pressing force required to securely pressing the male contact by the contact elements is certainly obtained. The contact and the male contact are securely contacted without any torsional force and other forces which would otherwise be caused on these contacts.

    摘要翻译: 用于连接器的触点,其包括用于在其间接纳配合连接器的阳接触件的两个相对的接触元件。 每个接触元件在相对的表面上设置有一个或多个突起,用于包围阳接触。 两个相对的接触元件的突出部分延伸到没有突起的相对的接触元件的部分,以便在阳接触件插入在接触元件之前彼此重叠。 通过这种布置,即使阳接触非常薄,肯定地获得了通过接触元件牢固地按压阳接触所需的压力。 接触件和阳接触件牢固地接触而没有任何扭转力和其他在这些接触件上引起的其它力。