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1. 发明授权

US3808425A Vehicle-carried inductive pickup device 失效
标题翻译：车载电感诱饵装置
公开(公告)号：US3808425A
公开(公告)日：1974-04-30
申请号：US85793969
申请日：1969-09-15
申请人： WESTINGHOUSE AIR BRAKE CO
发明人： CAMPBELL R , FRANKE R , DARROW J , POHLE F , GRUNDY R , NOBLE P
IPC分类号： H01Q1/32 , H01Q7/08
CPC分类号： H01Q1/32 , H01Q7/08
摘要： This invention relates to a vehicle-carried inductive pick-up device for inductively picking up signals from the rails of a railway track. The vehicle-carried pick-up device comprises a multi-turn pick-up coil positioned intermediate the ends of an elongated magnetic core, an electrical conductor having a pair of leads connected to the respective ends of the pick-up coil, an insulative potting material for rigidly encapsulating the pick-up coil, core, conductor, and an exterior housing for providing protection from adverse environmental conditions.
摘要翻译：本发明涉及一种用于从铁路轨道的轨道感应拾取信号的车载感应拾取装置。车载拾取装置包括位于细长磁芯的端部之间的多匝拾取线圈，具有连接到拾取线圈的各个端部的一对引线的电导体，绝缘灌封用于刚性地封装拾取线圈，芯，导体和外壳的材料，用于提供防止不利环境条件的保护。

2. 发明授权

US3731088A Station stop control arrangement for self-propelled vehicles 失效
标题翻译：自动停车控制装置
公开(公告)号：US3731088A
公开(公告)日：1973-05-01
申请号：US3731088D
申请日：1971-02-17
申请人： WESTINGHOUSE AIR BRAKE CO
发明人： GRUNDY R , LITTLE D
IPC分类号： B61L3/00 , B61L3/12 , B61L3/06
CPC分类号： B61L3/121
摘要： Coils tuned to a first and a second frequency are positioned in pairs along the track in approach to the station at which trains are to stop automatically, two pairs being shown. -the first pair are spaced a distance which establishes a selected passage time in accordance with average train speeds while the second pair are separated a distance proportional to predetermined differences in train lengths. On the train two transmitter and/or receivers are coupled by a common pair of coils to inductively respond to the corresponding frequency wayside coil. Response to the initial first frequency coil opens a gate which enables the other transmitter-receiver for a predetermined time or distance interval to respond to the second frequency wayside coil of the initial pair. Only if the train coils pass this second frequency coil during this gating interval is the station stop program initiated by the response of the second transmitter-receiver. While passing the second set of wayside coils, the response of the first or second transmitter-receiver is selectively used, in accordance with a preset train length condition, to modify the station stop program to improve the accuracy of the station stop position.
摘要翻译：调整到第一和第二频率的线圈沿着轨道成对地定位成与火车站自动停止的站相对，示出了两对。 - 第一对间隔开距离，该距离根据平均列车速度建立选定的通行时间，而第二对则与列车长度中的预定差异成正比的距离。在火车上，两个发射机和/或接收机通过一对共同的线圈耦合以对相应的频率线圈进行感应响应。对初始第一频率线圈的响应打开一个门，使得其它发射器 - 接收器能够预定的时间或距离间隔响应于初始对的第二频率绕组线圈。只有在该选通间隔期间，列车线圈通过该第2频率线圈是由第2发射机 - 接收机的响应发起的驻车停止程序。在通过第二组路线圈时，根据预设列车长度条件选择性地使用第一或第二发射机 - 接收机的响应来修改车站停止程序以提高车站停止位置的精度。

3. 发明授权

US3793596A Vital level detector and {37 and{38 {0 gate circuit arrangement employing a twin-tee oscillator 失效
标题翻译： VITAL LEVEL DETECTOR和{37 AND {38 {0 + GATE CIRCUIT ARRANGEMENT ORMPING THE TWIN TEE OSCILLATOR
公开(公告)号：US3793596A
公开(公告)日：1974-02-19
申请号：US3793596D
申请日：1972-06-01
申请人： WESTINGHOUSE AIR BRAKE CO
发明人： GRUNDY R
IPC分类号： G08G1/16 , H03B5/26
CPC分类号： G08G1/161 , H03B5/26
摘要： This disclosure relates to a fail-safe level detecting and AND gating circuit including a multistage solid state amplifier having a regenerative feedback loop. The regenerative feedback loop includes a frequency determining twin-tee network and a pair of voltage breakdown devices. The multistage amplifier produces a.c. oscillations when and only when the level of a d.c. voltage applied across each of the voltage breakdown devices exceeds its threshold value so that both of the breakdown devices become conductive and exhibit a low impedance condition.
摘要翻译：本公开涉及包括具有再生反馈回路的多级固态放大器的故障安全电平检测和与门控电路。再生反馈回路包括频率确定双T形网络和一对电压击穿装置。多级放大器产生电流。当且仅当达到水平时振荡。施加在每个电压击穿器件上的电压超过其阈值，使得两个击穿器件变为导通并且呈现低阻抗条件。

4. 发明授权

US3819933A Detector track circuit for railroad crossings 失效
标题翻译：用于铁路交叉口的检测器跟踪电路
公开(公告)号：US3819933A
公开(公告)日：1974-06-25
申请号：US31360872
申请日：1972-12-08
申请人： WESTINGHOUSE AIR BRAKE CO
发明人： GRUNDY R
IPC分类号： B61L1/18 , B61L23/30
CPC分类号： B61L1/185
摘要： A separate transmitter source of periodic high voltage pulses is coupled to each approach section rails at the end distant from the permanent shunt across the rails at a railroad crossing. Each pulse transmits a high level oscillating current pulse through the rail loop including the intersecting rail shunt so that similar track currents flow in both approach sections. A single receiver means is coupled to each rail shunt by a separate pickup coil, the output of which is rectified to charge a storage capacitor at an averaged voltage level representative of the amplitude of the current pulses in the corresponding shunt. The voltages stored in both capacitors are applied to the dual inputs of a two channel, vital level detector and logic AND circuit element. An output signal is produced by the level detector and AND circuits only when both inputs are at or above a level representative of an unoccupied section. The output is then applied, through a relay driver circuit, to a vital type track relay to jointly register the occupancy condition of both crossing approaches.
摘要翻译：周期性高压脉冲的单独发射机源耦合到远离永久分路的端部处的铁路上的每个接近部分轨道。每个脉冲通过包括相交轨道分流器的轨道回路传输高电平振荡电流脉冲，使得类似的轨道电流在两个接近部分中流动。单个接收器装置通过单独的拾取线圈耦合到每个导轨并联，其输出被整流以以代表相应分流器中的电流脉冲的幅度的平均电压电平对存储电容器充电。存储在两个电容器中的电压被施加到双通道，重要电平检测器和逻辑与电路元件的双输入。仅当两个输入都处于或高于代表未占用部分的电平时，电平检测器和“与”电路产生一个输出信号。然后将输出通过继电器驱动电路施加到重要类型的轨道继电器，以共同登记两种交叉方式的占用情况。

5. 发明授权

US3794932A Vital level detector 失效
标题翻译：水平检测仪
公开(公告)号：US3794932A
公开(公告)日：1974-02-26
申请号：US3794932D
申请日：1972-04-26
申请人： WESTINGHOUSE AIR BRAKE CO
发明人： GRUNDY R
IPC分类号： H03B5/26
CPC分类号： H03B5/26
摘要： This disclosure relates to a fail-safe level detecting circuit including a solid state amplifier having a feedback loop. The feedback loop includes a frequency determining twin-tee network and a voltage breakdown device. The amplifier produces a.c. oscillations when and only when the level of a d.c. voltage exceeds the threshold value of the voltage breakdown device.
摘要翻译：本公开涉及包括具有反馈回路的固态放大器的故障安全电平检测电路。反馈回路包括频率确定双网络和电压击穿装置。放大器产生一个当且仅当达到水平时振荡。电压超过电压击穿装置的阈值。

6. 发明授权

US3832599A Vital more restrictive speed command sensing circuit 失效
标题翻译：更有限制的速度指令感应电路
公开(公告)号：US3832599A
公开(公告)日：1974-08-27
申请号：US38837173
申请日：1973-08-15
申请人： WESTINGHOUSE AIR BRAKE CO
发明人： GRUNDY R
IPC分类号： B61L3/00 , G01P1/10 , H01H47/00 , H01H47/32
CPC分类号： G01P1/10 , B61L3/00
摘要： This disclosure relates to a vital type of more restrictive vehicle speed command sensing circuit arrangement including a speed decoding unit, a switching circuit, a storage circuit and an acknowledging circuit. When a more restrictive speed command is received, the switching circuit is rendered conductive. The conduction of the switching circuit causes the acknowledging circuit to be activated by the storage circuit thereby acknowledging the reception of a more restrictive speed command.
摘要翻译：本公开涉及一种更严格的限制性车辆速度指令检测电路装置的重要类型，其包括速度解码单元，开关电路，存储电路和确认电路。当接收到更严格的速度命令时，切换电路变为导通状态。开关电路的导通使得确认电路被存储电路激活，从而确认接收到更严格的速度命令。

7. 发明授权

US3828225A Fail-safe vehicle-carried anti-collision protection receiver 失效
标题翻译：失物保护车载抗干扰保护接收器
公开(公告)号：US3828225A
公开(公告)日：1974-08-06
申请号：US28976872
申请日：1972-09-18
申请人： WESTINGHOUSE AIR BRAKE CO
发明人： GRUNDY R
IPC分类号： B61L3/22 , H01H47/20
CPC分类号： B61L3/22
摘要： This disclosure relates to a fail-safe vehicle-carried anticollision receiver for automatically applying and releasing the service brakes to control the movement of a vehicle. The receiver includes an electromagnetic inductive coil for normally picking up two a.c. signals from the wayside as the vehicle moves along its route of travel. The a.c. signals are amplified by a preamplifier and are individually transformer coupled to a pair of signal frequency responsive circuits each of which includes an amplifier and a rectifier. Each of the rectified d.c. output signals of the signal frequency responsive circuits is coupled to a separate input of an amplitude level detecting and logic circuit. The detecting and logic circuit produces a.c. oscillations which are amplified and rectified by a relay driving circuit. The rectified output of the relay driving circuit normally energizes a vital relay which maintains its back contacts open to deactivate the service brake control apparatus when and only when the presence and level of both of the d.c. input signals to the detecting and logic circuit are produced due to the reception of the two a.c. input signals.
摘要翻译：本公开涉及一种用于自动应用和释放行车制动器以控制车辆运动的故障安全车载防撞接收器。接收器包括一个电磁感应线圈，用于正常拾取两个直流电。当车辆沿其行进路线移动时，路边的信号。 a.c. 信号由前置放大器放大，并且单独变换器耦合到一对信号频率响应电路，每个信号频率响应电路包括放大器和整流器。每个纠正的直流信号频率响应电路的输出信号耦合到幅度电平检测和逻辑电路的单独输入端。检测和逻辑电路产生电流。由继电器驱动电路放大和整流的振荡。继电器驱动电路的整流输出通常为维持其背部触点断开的重要继电器通电，当且仅当两个直流电流的存在和电平都停止时，停用制动控制装置。由于接收到两个交流电压，产生了到检测和逻辑电路的输入信号。输入信号。

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