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1. 发明授权

US3907237A Check-in, check-out track circuit arrangement 失效
标题翻译：入住，退房跟踪电路安排
公开(公告)号：US3907237A
公开(公告)日：1975-09-23
申请号：US47080274
申请日：1974-05-17
申请人： WESTINGHOUSE AIR BRAKE CO
发明人： STAPLES CRAWFORD E
IPC分类号： B61L1/18 , B61L23/14
CPC分类号： B61L1/185
摘要： A train approach registry relay at the exit end of the approach track section at a signal location is held normally energized over its own stick contact and releases to register the track circuit detection of an approaching train. The reenergizing circuit, when the train clears the approach section, includes a back contact of the train occupancy registry relay at the entrance end of the advance track section. Thus the train occupancy registration for the approach section is not cleared until the same train is positively detected and registered into the adjoining section. In one form, the approach registry relay is in series in the approach section signal line circuit energized over a front contact of that relay. The line circuit is reenergized, when the section is again clear, over a back contact of the advance section signal line relay. In a coded track circuit form, the approach registry relay is the reverse code decoding relay for the approach section, with its own stick front contact in the capacitor decoding network. This decoding registry relay is then reenergized by a direct circuit over a back contact of the advance section, back contact decoding relay of the master code.
摘要翻译：在信号位置处的进场轨道部分的出口端的列车接近注册中继器通过其自身的杆接触件被正常地通电，并释放以登记接近的列车的轨道电路检测。再次通电电路，当火车清除接近部分时，包括列车占用登记继电器在前进轨道部分入口端的后接触。因此，在相同列车被正确地检测并注册到相邻部分之前，接近部分的列车占用登记不被清除。在一种形式中，接近注册继电器在接近部分中串联信号线电路，在该继电器的前触点上通电。当线路电路再次清零时，线路电路再次通电，超前部分信号线继电器的后触点。在编码跟踪电路形式中，接近注册中继器是用于接近部分的反向码解码继电器，在电容器解码网络中具有自己的前置触点。该解码注册中继器然后由直接电路通过提前部分的后接触，主代码的后接触解码继电器重新通电。

2. 发明授权

US3893544A Pneumatic-hydraulic brake apparatus for a four-wheel truck 失效
标题翻译：四轮卡车气动液压制动装置
公开(公告)号：US3893544A
公开(公告)日：1975-07-08
申请号：US45087174
申请日：1974-03-13
申请人： WESTINGHOUSE AIR BRAKE CO
发明人： MEANS DONALD C
IPC分类号： B61H11/00 , B60T13/40 , B61H13/20 , B61H13/24 , B61H15/00 , F16D65/74
CPC分类号： F16D65/74 , B61H13/24 , B61H15/00
摘要： This invention relates to a pneumatically controlled hydraulically actuated brake apparatus of the constant brake shoe clearance type for a two-axle four-wheel vehicle truck wherein a constant brake shoe clearance is obtained by supplying a quantity of hydraulic fluid to a chamber formed between the wall surfaces of a cylinder and an actuating piston slidably disposed in the chamber in accordance with the increase in volume of the chamber as the result of brake shoe wear while a brake application is in effect and thereafter, upon effecting a brake release, always releasing the same quantity of hydraulic fluid from this chamber irrespective of the degree of brake shoe and/or wheel wear occurring while the prior brake application was in effect.
摘要翻译：本发明涉及一种用于双轴四轮车辆车辆的恒定制动蹄间隙型气动控制的液压致动制动装置，其中通过将一定数量的液压流体供应到形成在所述壁之间的室根据在制动器应用有效期间由于制动蹄的磨损而随着室内体积的增加而可动地设置在腔室中的气缸和致动活塞的表面，此后，在执行制动释放时，总是将其释放不管在现有的制动应用有效期间发生的制动蹄的程度和/或轮磨损，来自该室的液压流体的数量。

3. 发明授权

US3883815A Fail-safe selectable low-pass filtering 失效
标题翻译：失效安全选择低通滤波
公开(公告)号：US3883815A
公开(公告)日：1975-05-13
申请号：US38837073
申请日：1973-08-15
申请人： WESTINGHOUSE AIR BRAKE CO
发明人： GRUNDY REED H
IPC分类号： B61L3/00 , H03G3/02 , H03F3/04
CPC分类号： B61L3/00 , B61L3/002 , H03G3/02
摘要： This invention relates to a vital type of selectable active lowpass filtering circuit. The selectable low-pass filtering circuit includes a half section resistance-capacitance filter network and a variable gain transistor amplifier. The input of the transistor amplifier is coupled to the half section resistance-capacitance filter network and the output of the transistor amplifier is selectively coupled to one of a plurality of load resistors each of which establishes a different gain for the transistor amplifier.
摘要翻译：本发明涉及一种重要类型的可选择的有源低通滤波电路。可选择的低通滤波电路包括半截面电阻电容滤波器网络和可变增益晶体管放大器。晶体管放大器的输入耦合到半截面电阻电容滤波器网络，并且晶体管放大器的输出选择性地耦合到多个负载电阻中的一个，每个负载电阻为晶体管放大器建立不同的增益。

4. 发明授权

US3827533A Operable skate type of railway car retarder 失效
标题翻译：铁路类型的铁路车辆拖车
公开(公告)号：US3827533A
公开(公告)日：1974-08-06
申请号：US32031073
申请日：1973-01-02
申请人： WESTINGHOUSE AIR BRAKE CO
发明人： NOBLE P
IPC分类号： B61K7/08
CPC分类号： B61K7/08
摘要： This invention relates to an operable skate type of railway car retarder including a plurality of inner and outer levers pivotally supported on the cross ties and physically disposed on opposite sides of a track rail. Each of the inner and outer pivotal levers supports an elongated braking element which is disposed parallel to the track rails. Each of the outer pivotal levers of the car retarder is operated by an actuating mechanism. Each actuating mechanism includes a power operating unit as well as a locking unit. The power operating unit utilizes a fluid piston and cylinder as well as slide piston and guide cylinder to raise the outer lever to cause the braking element to assume a braking position. The locking unit includes a fluid piston and cylinder operating a lock block which engages the slide piston and locks the lever in its braking position or disengages the slide position and releases the lever allowing the retarder to assume its nonbraking position.
摘要翻译：本发明涉及一种可操作的滑冰类型的铁路车辆缓速器，其包括枢转地支撑在十字架上并且物理地设置在轨道轨道的相对侧上的多个内杠杆和外杠杆。内和外枢转杆中的每一个支撑平行于轨道轨布置的细长制动元件。汽车缓速器的每个外部枢转杆由致动机构操作。每个致动机构包括动力操作单元以及锁定单元。动力操作单元利用流体活塞和气缸以及滑动活塞和导向气缸来升高外部杠杆以使制动元件处于制动位置。锁定单元包括流体活塞和气缸，其操作锁定块，该锁定块接合滑动活塞并将杠杆锁定在其制动位置，或者解除滑动位置，并释放杠杆，允许缓速器承受其非制动位置。

5. 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。

6. 发明授权

US3818618A Linkage for ground positioning of an earth scraper elevator 失效
标题翻译：连接地面刮板电梯的地面定位
公开(公告)号：US3818618A
公开(公告)日：1974-06-25
申请号：US29042272
申请日：1972-09-19
申请人： WESTINGHOUSE AIR BRAKE CO
发明人： HYLER J
IPC分类号： B60P1/36 , E02F3/64
CPC分类号： E02F3/655 , B60P1/36 , E02F3/6481
摘要： An elevator located at the open end of a scraper bowl is rotatable upon a pair of links connecting the upper end of the elevator sidewalls to the bowl sidewalls. A pair of cams resiliently mounted on the bowl sidewalls to extend forwardly and upwardly support one end of a pair of extensible hydraulic cylinders pivotally connected to the bowl sidewalls. The cylinders include rollers as cam followers linked to the extensible end of the cylinders and rotatable upon the supportive cam surfaces. A pair of bowl hoist hydraulic cylinders pivotally connect a draft frame to the bowl near the lower open end of the bowl where a transverse scraper blade is secured. In operation, the bowl hoist cylinders are hydraulically positioned by hydraulic control means to set the position of the blade. The extensible cylinders are hydraulically controlled to position the rollers upon the cam surfaces, thus moving the lower end of the elevator in a predetermined path relative to the blade, i.e., sloping generally upwardly and forwardly.
摘要翻译：位于刮板的开口端的电梯可以在将升降机侧壁的上端连接到碗侧壁的一对连杆上旋转。一对凸轮弹性地安装在碗侧壁上，以向前和向上支撑一对可枢转地连接到碗侧壁的可伸缩液压缸的一端。气缸包括作为连接到气缸的可延伸端并可在支撑凸轮表面上旋转的凸轮从动件的辊。一对碗葫芦液压缸将一个牵引架枢转地连接到靠近碗的下开口端的碗上，其中横向刮刀被固定。在操作中，碗葫芦缸由液压控制装置液压定位，以设定叶片的位置。可伸缩气缸是液压控制的，以将辊定位在凸轮表面上，从而使电梯的下端以相对于叶片的预定路径移动，即大致向上和向前倾斜。

7. 发明授权

US3813614A A fail-safe r-c phase shift oscillating type of level detector 失效
标题翻译：一个失效的安全R-C相位移动振荡式水平检测器
公开(公告)号：US3813614A
公开(公告)日：1974-05-28
申请号：US28710372
申请日：1972-09-07
申请人： WESTINGHOUSE AIR BRAKE CO
发明人： DARROW J
IPC分类号： G01R19/165 , H03B5/12 , H03B5/20
CPC分类号： G01R19/16576 , H03B5/1203 , H03B5/1231 , H03B2200/0006 , H03B2200/001
摘要： A fail-safe level detector comprising a regenerative feedback oscillator and a voltage breakdown device interconnecting the output and common electrodes of the oscillator so that sufficient feedback for sustaining oscillations only occurs when a D.C. input causes the breakdown device to conduct and to assume its low dynamic impedance condition.
摘要翻译：一个故障安全电平检测器，包括再生反馈振荡器和互连振荡器的输出和公共电极的电压击穿装置，使得仅当DC输入导致击穿装置导通并承担其低动态时才发生用于维持振荡的足够反馈阻抗条件。

8. 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。

9. 发明授权

US3794833A Train speed control system 失效
标题翻译：火车速度控制系统
公开(公告)号：US3794833A
公开(公告)日：1974-02-26
申请号：US3794833D
申请日：1972-05-25
申请人： WESTINGHOUSE AIR BRAKE CO
发明人： BLAZEK F , DUFER W , FRANKE R , SCHATZEL P
IPC分类号： B61L3/22 , B61L3/10
CPC分类号： B61L3/221
摘要： High frequency detector track circuits are coupled to the rails at crossbonds which divide the track stretch into sections without insulated joints. The HF transmitters supply track energy both directions from alternate bonds into each track section of the adjoining pair. Correspondingly tuned receivers at the other end of each section control track relays which indicate the track occupancy condition. Successive pairs of track sections have different frequencies selected on a random basis from a predetermined plurality. Train control energy of a different, single frequency is supplied to the rails at the exit end of each section and is modulated by one of a plurality of low frequency code rates selected in accordance with the track occupancy condition of advance sections as determined by the track circuits. Each train is equipped with train control apparatus including at least cab signals and overspeed protection. Receivers inductively coupled to the rails pick up and supply the speed signals through a demodulator and active filters to register an allowed speed indication in accordance with the detected code rate. Train speed sensing apparatus registers the actual train speed. Overspeed detection apparatus then compares allowable and actual speeds, detects an overspeed condition, and actuates an automatic braking action if the train operator does not initiate a speed reduction within a preset time limit.
摘要翻译：高频探测器轨道电路在横截面处连接到轨道，其将轨道拉伸分成没有绝缘接头的部分。 HF发射机向邻接对的每个轨道部分提供从交替键到达两个方向的轨道能量。在每个部分的另一端相应调谐的接收器控制指示轨道占用条件的轨道继电器。连续的轨道段对具有从预定的多个随机选择的不同频率。将不同的单个频率的列车控制能量提供给每个部分的出口处的轨道，并且由根据由轨道确定的提前部分的轨道占用条件选择的多个低频码率之一调制电路。每列火车配备有至少包括驾驶室信号和超速保护的列车控制装置。感应耦合到轨道的接收器通过解调器和有源滤波器拾取并提供速度信号，以根据检测到的码率来注册允许的速度指示。列车速度检测装置记录实际列车速度。超速检测装置然后比较允许速度和实际速度，检测超速状况，并且如果列车操作者在预设时限内没有启动速度降低，则启动自动制动动作。

10. 发明授权

US3794832A Bi-directional coded track circuits without insulated joints 失效
标题翻译：无绝缘接头的双向编码跟踪电路
公开(公告)号：US3794832A
公开(公告)日：1974-02-26
申请号：US3794832D
申请日：1972-11-21
申请人： WESTINGHOUSE AIR BRAKE CO
发明人： HUFFMAN D , CAREY A
IPC分类号： B61L23/16 , B61L23/30
CPC分类号： B61L23/168
摘要： At each end of a track stretch, a relay chain driven by a code transmitter at times connects across the rails in repeated sequences a polar, code following track relay, a track battery, and a rail shunt path. A similar sequence of rail connections at each intermediate repeater location is produced by a front contact repeater and a decoding repeater of the corresponding track relay. Each repeater relay has a selected slow release to produce the sequence following each response by the track relay to a received energy pulse. The pulse following operation of each end location track relay is decoded by a repeater relay which connects the track relay continuously across the rails and inhibits relay chain operation. A shorter relay chain at one end prevents scrambled code and provides a dominant pulse transmitter with no train occupancy and no entering signal cleared. Each repeater location transmits in either direction and requires no insulated joints to separate adjoining sections since track battery connections are of alternately opposite polarity from location to location. The track rail shunt applied following pulse transmission at each location prevents response by the associated track relay to the subsequent pulse transmitted from the adjacent advance location and thus maintains pulse direction. To prevent false operation, each track relay is rail connected with polarity opposite to the same location track battery. Clearing an entering signal sets up pulse transmission from the other end.
摘要翻译：在轨道伸展的每一端，由代码发送器驱动的中继链有时以重复的顺序连接在轨道上，极性，代码跟随轨道继电器，轨道电池和轨道分流路径。在每个中间转发器位置处的类似的轨道连接序列由对应的轨道继电器的前接触中继器和解码中继器产生。每个中继器继电器具有选择的缓慢释放以产生跟踪中继器对接收的能量脉冲的每个响应之后的序列。每个终端位置轨道继电器的脉冲跟随操作由中继器继电器解码，中继器继电器连续地跨轨道连接轨道继电器，并禁止中继链操作。一端较短的中继链可防止加扰码，并提供无脉冲占用并且无进入信号清除的主要脉冲发射机。每个中继器位置在任一方向上传输，并且不需要绝缘接头来分离相邻部分，因为轨道电池连接在位置与位置之间具有交替相反的极性。在每个位置的脉冲传输之后施加的轨道轨道分流器防止相关联的轨道继电器响应于从相邻的前进位置发送的后续脉冲，从而保持脉冲方向。为了防止误操作，每个轨道继电器的导轨连接极性与相同位置的轨道电池相反。清除输入信号从另一端设置脉冲传输。

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