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公开(公告)号：US06952932B2
公开(公告)日：2005-10-11
申请号：US10661843
申请日：2003-09-12
CPC分类号： F01B19/02 , F02B29/0418 , F02B29/0468 , F02B29/0475 , F02B29/0493 , F04B39/066 , F04B39/068 , Y02T10/146
摘要： Method and apparatus for heating gases cooled by an aftercooler that receives hot gases from a compressor. The method includes the steps of directing at least a portion of said hot gases to means for bypassing the aftercooler, and using the bypass means to direct hot gases to a location that receives cooled gases from the aftercooler. The hot gases are used at the location to heat the cooled gases when ambient temperature is at or below freezing, and are used downstream from the aftercooler when moisture freezes in the aftercooler.
摘要翻译： 用于加热由接收来自压缩机的热气体的后冷器冷却的气体的方法和装置。 该方法包括以下步骤：将至少一部分热气体引导到用于绕过后冷却器的装置，以及使用旁路装置将热气体引导到接收来自后冷却器的冷却气体的位置。 当环境温度处于或低于冰点时，在该位置使用热气体来加热冷却的气体，并且在后冷却器中的湿气冻结时用于后冷却器的下游。
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2.发明授权Molded rubber valve seal for use in predetermined type valves, such as, a check valve in a regenerative desiccant air dryer 失效用于预定类型阀的成型橡胶阀密封件，例如再生干燥剂空气干燥器中的止回阀
公开(公告)号：US5899435A
公开(公告)日：1999-05-04
申请号：US710209
申请日：1996-09-13
IPC分类号： F16K15/00 , F16K25/00 , F16K31/122
CPC分类号： F16K25/00
摘要： A valve seal system for passageway through a valve body emerging through a first generally flat and rigid surface, having a valve member including a resilient seal with generally flat exposed surface adapted to be brought into contact with the generally flat rigid surface, and having a generally circular, raised resilient ring portion extending from the generally flat exposed surface, the raised resilient ring portion adapted to be compressed against the generally flat rigid surface to seal the resilient seals against the generally flat rigid surface when said valve member is moved to a closed position by virtue of the raised resilient ring portion being compressed against the generally flat rigid surface.
摘要翻译： 一种用于通过阀体通过第一大致平坦和刚性表面的阀体的阀门密封系统，该阀体具有阀构件，阀构件包括弹性密封件，弹性密封件具有大致平坦的露出表面，适于与大致平坦的刚性表面接触， 圆形凸起的弹性环部分从大致平坦的暴露表面延伸，凸起的弹性环部分适于被压靠在大致平坦的刚性表面上，以便当所述阀构件移动到关闭位置时将弹性密封件密封抵靠大致平坦的刚性表面 由于凸起的弹性环部分被压靠在大致平坦的刚性表面上。
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公开(公告)号：US5560503A
公开(公告)日：1996-10-01
申请号：US545930
申请日：1995-10-20
CPC分类号： B61G5/02
摘要： An articulated coupling male connection member support assembly having an improved lubrication arrangement incorporated therein. Such support assembly includes a bottom ring bearing member supported on an upper surface of a bottom wall portion of a female connection member adjacent an outer end thereof. The bottom ring bearing member has a concave shaped spherical upper surface. An upper ring bearing member having a convex shaped spherical bottom surface is supported by such concave upper surface of the bottom ring bearing member. The upper ring bearing member has a substantially flat upper surface for supporting a bottom surface of a male connection member adjacent an outer end thereof. There is a substantially solid lubricating liner member disposed between such concave shaped spherical upper surface of the bottom ring bearing member and such convex shaped spherical bottom surface of the upper ring bearing member. This substantially solid lubricating liner member is secured to one of such concave shaped spherical upper surface and such convex shaped spherical bottom surface.
摘要翻译： 具有结合在其中的改进的润滑装置的铰接联接器公连接构件支撑组件。 这种支撑组件包括支撑在阴连接构件的与其外端相邻的底壁部分的上表面上的底环支承构件。 底环承载构件具有凹形的球形上表面。 具有凸形球形底表面的上环支承构件由底环承载构件的这种凹上表面支撑。 上环承载构件具有基本平坦的上表面，用于支撑阳连接构件的与其外端相邻的底表面。 设置在底环承载部件的凹形球形上表面和上环支承部件的凸形球形底表面之间的基本上固体的润滑衬套部件。 这个基本上固体的润滑衬套件固定到这种凹形球形上表面和这种凸形球形底表面之一上。
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公开(公告)号：US3907237A
公开(公告)日：1975-09-23
申请号：US47080274
申请日：1974-05-17
发明人： STAPLES CRAWFORD E
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。
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公开(公告)号：US3893544A
公开(公告)日：1975-07-08
申请号：US45087174
申请日：1974-03-13
发明人： MEANS DONALD C
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。
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公开(公告)号：US3883815A
公开(公告)日：1975-05-13
申请号：US38837073
申请日：1973-08-15
发明人： GRUNDY REED H
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。
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公开(公告)号：US3827533A
公开(公告)日：1974-08-06
申请号：US32031073
申请日：1973-01-02
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。
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公开(公告)号：US3819933A
公开(公告)日：1974-06-25
申请号：US31360872
申请日：1972-12-08
发明人： GRUNDY R
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。
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公开(公告)号：US3818618A
公开(公告)日：1974-06-25
申请号：US29042272
申请日：1972-09-19
发明人： HYLER J
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。
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公开(公告)号：US3813614A
公开(公告)日：1974-05-28
申请号：US28710372
申请日：1972-09-07
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。
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