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123 条记录 (耗时 0.014 秒)

    Voltage booster circuit for telephone systems
    22.
    发明授权
    Voltage booster circuit for telephone systems 失效
    电话系统的升压电路

    公开(公告)号：US3872258A

    公开(公告)日：1975-03-18

    申请号：US43749174

    申请日：1974-01-28

    申请人： LORAIN PROD CORP

    发明人： CHAMBERS JR CHARLES W

    IPC分类号： H04M19/00 ,  H04M3/24 ,  H04B3/46

    CPC分类号： H04M19/006

    摘要： A voltage booster circuit for additively increasing the d-c operating current and voltage of the subscriber lines of telephone systems. Current gating circuitry senses the current through each conductor of the subscriber line and controls the connections of d-c voltage detecting circuitry thereto in accordance with the magnitude and direction of that current flow. The d-c voltage detecting circuitry, in turn, controls the insertion and removal of d-c boost voltage sources into and from the subscriber line, in accordance with the magnitude and the polarity of the d-c voltage which the central office applies to the subscriber line. The circuit is adapted to allow accurate measurements to be made on the subscriber line without disconnecting the voltage booster circuit from the subscriber line.

    摘要翻译： 一种用于相加地增加电话系统的用户线路的d-c工作电流和电压的升压电路。 电流门控电路感测通过用户线路的每个导体的电流，并根据该电流的大小和方向来控制d-c电压检测电路的连接。 d-c电压检测电路又根据中心局对用户线路的d-c电压的大小和极性控制d-c升压电压源和从用户线路的插入和移除。 该电路适于允许在用户线路上进行准确的测量，而不断开升压电路与用户线路的连接。

    Switching circuit for preventing lost calls
    23.
    发明授权
    Switching circuit for preventing lost calls 失效
    切换电路以防止丢失呼叫

    公开(公告)号：US3854012A

    公开(公告)日：1974-12-10

    申请号：US35323673

    申请日：1973-04-23

    申请人： LORAIN PROD CORP

    发明人： CHAMBERS C

    IPC分类号： H04Q3/62 ,  H04M3/42

    CPC分类号： H04Q3/625

    摘要： A circuit for preventing the disconnection of PBX calls from a PBX in the presence of open circuits at ESS central offices. A switching network is adapted to assume a first operative state to establish a direct metallic connection between a central office and a PBX during the transmission therebetween of normal switching, signalling and talking currents such as dialing and ringing. The switching network is also adapted to assume a second operative state to apply battery potential and ground to the PBX to simulate a closed circuit condition to a PBX call in the presence of open circuits at the central office. Novel sensing circuitry is provided to distinguish between the central office and PBX conditions under which operation of the switching network in the first state is desirable and the central office and PBX conditions under which operation of the switching network in the second state is desirable, thus assuring that under certain conditions lost calls are prevented without interfering with normal telephone system operations.

    摘要翻译： 一种用于在ESS中心局存在开路的情况下防止集团电话断开PBX呼叫的电路。 交换网络适于采取第一操作状态，以在正常切换，信令和通话电流（例如拨号和振铃）之间的传输期间在中心局和PBX之间建立直接金属连接。 交换网络还适于采取第二操作状态，以在中央局处存在开放电路的情况下将电池电势和接地施加到集团电话以模拟PBX呼叫的闭路状态。 提供新颖的感测电路以区分中央局和PBX条件，在该情况下，期望在第一状态下的交换网络的操作以及期望在第二状态下的交换网络的操作的中心局和PBX条件，从而确保 在某些情况下，在不干扰正常电话系统操作的情况下，防止丢失呼叫被阻止。

    Stripping machine for electrical conductors
    24.
    发明授权
    Stripping machine for electrical conductors 失效
    电导体剥皮机

    公开(公告)号：US3638518A

    公开(公告)日：1972-02-01

    申请号：US3638518D

    申请日：1970-08-14

    申请人： LORAIN PROD CORP

    发明人： PARKER GILBERT R

    IPC分类号： H02G1/12

    CPC分类号： H02G1/1248

    摘要： A machine for stripping the insulation from the end of an electrical conductor. An insulated conductor is placed between first and second cutter blades each having a size and shape suitable for use with the size of conductor being stripped and between first and second gripping jaws. Cam followers are attached to each cutter blade and each gripping jaw. A control member having a tapered end and a cylindrical body is longitudinally driven against the followers. The cutter blades are arranged to travel inwardly to sever an end section of the insulation when the followers associated therewith are in moving contact with the tapered end of the control member and to trap the severed end section of the insulation when the followers are in contact with the cylindrical body of the control member. The gripping jaws are arranged to grip the conductor with increasing pressure when the followers associated therewith are in moving contact with the tapered end of the control member. As the latter followers travel along the taper, the gripping jaws and the conductor held therebetween move with the control member away from the cutter blades to pull the main body of the conductor away from the trapped end section of insulation.

    摘要翻译： 用于从电导体端部剥离绝缘体的机器。 绝缘导体被放置在第一和第二切割刀片之间，每个切割刀片具有适合与剥离的导体的尺寸以及第一和第二夹持爪之间使用的尺寸和形状。 凸轮从动件连接到每个切割刀片和每个夹爪上。 具有锥形端和圆柱体的控制构件被纵向驱动抵靠着随动件。 当与其相关联的跟随器与控制构件的锥形端部移动接触并且当跟随者接触时捕获绝缘体的切断端部分时，刀片被布置成向内行进以切断绝缘体的端部部分 控制构件的圆柱体。 夹持夹爪布置成当与其相关联的跟随件与控制构件的锥形端部移动接触时，以增加的压力夹持导体。 随着随后的随动件沿着锥度行进，夹持夹爪和保持在其上的导体之间移动，控制构件远离切割刀片将导体的主体拉离绝缘的截留端部分。

    Tool for staking a terminal pin to a terminal lug
    25.
    发明授权
    Tool for staking a terminal pin to a terminal lug 失效
    用于将终端PIN固定在终端机上的工具

    公开(公告)号：US3636612A

    公开(公告)日：1972-01-25

    申请号：US3636612D

    申请日：1970-04-09

    申请人： LORAIN PROD CORP

    发明人： SUPRUN GEORGE

    IPC分类号： H01R43/26 ,  H01R43/04

    CPC分类号： H01R43/26 ,  Y10T29/53209 ,  Y10T29/53257 ,  Y10T29/5327

    摘要： A tool for fastening a wire-bearing terminal pin to terminal lug. A drive member is slidably mounted in a tube having a longitudinal opening in the tube wall at one end thereof. A terminal pin having a wire crimped thereto is pushed into the end of the tube until the tip of the terminal pin touches the tip of the drive member. As this occurs, the wire passes through the longitudinal opening and is deflected away from the tip of the terminal pin thus to clear the path of movement of the drive member, this being accomplished by a deflecting surface at the tip of the drive member. The end of the loaded tube is slipped over the companion terminal lug until the contact between the flat end of the tube and the mounting surface of the terminal lug orients the longitudinal axis of the tube along the longitudinal axis of the terminal lug. This allows the end of the drive member to pushingly engage the tip of the terminal pin while the contact between the terminal pin and the tube wall prevents the application of a lateral force to either the terminal pin or the terminal lug. The longitudinal movement of the drive member forces the terminal pin substantially longitudinally into intimate electrical contact with the terminal lug. As the tool is removed, the terminal pin passes through the end of the tube and the wire passes through the longitudinal opening in the wall thereof.

    摘要翻译： 用于将导线端子销紧固到端子凸耳的工具。 驱动构件可滑动地安装在管中，该管在管壁的一端具有纵向开口。 具有压接在其上的导线的端子销被推入管的端部，直到端子销的尖端接触驱动构件的尖端。 当这种情况发生时，电线穿过纵向开口并且偏离端子销的尖端，从而清除驱动构件的移动路径，这是通过驱动构件顶端的偏转表面实现的。 加载的管的端部滑过配对端子凸耳，直到管的扁平端部和端子凸耳的安装表面之间的接触使得管子的纵向轴线沿端子凸耳的纵向轴线。 这允许驱动构件的端部推动接合端子销的尖端，同时端子销和管壁之间的接触防止向端子销或端子凸耳施加横向力。 驱动构件的纵向运动迫使端子销基本纵向地与端子凸耳紧密地电接触。 当工具被移除时，端子销穿过管的端部，并且电线穿过其壁中的纵向开口。

    Firing circuit for thyristors
    26.
    发明授权
    Firing circuit for thyristors 失效
    烧录电路

    公开(公告)号：US3558906A

    公开(公告)日：1971-01-26

    申请号：US3558906D

    申请日：1969-06-25

    申请人： LORAIN PROD CORP

    发明人： PARADISSIS PANTELIS P

    IPC分类号： H02M7/515 ,  H02M7/517 ,  H03K3/00

    CPC分类号： H02M7/517 ,  H02M7/515

    摘要： A control circuit for supplying trains of firing pulses to each of a plurality of thyristors. A plurality of oscillator circuits, having feedback windings coupled to respective outputs, supply firing pulses to respective thyristors. The order in which the different oscillator circuits are caused to produce firing pulses is controlled by a multistate switching circuit. The feedback winding of the energized oscillator circuit disables all other oscillator circuits to prevent simultaneous application of firing pulses to more than one thyristor during the time when the multistate switching circuit is changing states.