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公开(公告)号：US4175792A
公开(公告)日：1979-11-27
申请号：US942234
申请日：1978-09-14
申请人： James E. Hart
发明人： James E. Hart
CPC分类号： B60T15/42
摘要： This invention relates to a railway vehicle continual quick service valve device that embodies two abutments normally subject on their respective opposite sides of the pressure in a train brake pipe and in a control chamber. Upon a reduction of brake pipe pressure on one side of these abutments, one abutment operates a valve to release fluid under pressure from the brake pipe and the brake pipe side of the other abutment to atmosphere whereupon this other abutment operates a valve that releases fluid under pressure from the control chamber and the control chamber side of both abutments to atmosphere. These abutments then operate their respective valves to cut off venting of fluid under pressure from the brake pipe and the control chamber to atmosphere. If the reduction of brake pipe pressure on the one side of the one abutment continues, the abovedescribed cycle reoccurs so long as fluid under pressure is released from the brake pipe.
摘要翻译： 本发明涉及一种铁路车辆连续快速维修阀装置，其体现在通常在其列车制动管道和控制室中各自相应的两侧承受的两个基台。 当在这些抵接部的一侧减小制动管压力时，一个支座操作阀，以将压力下的流体从制动管和另一个抵接件的制动管侧释放到大气中，由此该另一个支座操作一个释放流体的阀 压力从控制室和控制室一侧的两个支座到大气。 这些支座然后操作它们各自的阀门以切断压力下的流体从制动管和控制室排放到大气中。 如果一个支座的一侧的制动管压力的降低继续下去，只要在压力下的流体从制动管中释放，上述循环将再次出现。
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公开(公告)号：US4161340A
公开(公告)日：1979-07-17
申请号：US908484
申请日：1978-05-22
申请人： James E. Hart
发明人： James E. Hart
摘要： A brake control valve device for a railway vehicle having a service valve piston assembly subject to a pressure differential between the brake pipe and a single reservoir acting on a first piston and to brake cylinder delivery pressure acting on a second piston of the assembly. A brake pipe reduction actuates the service valve assembly, toward service application position, in which position, the single reservoir pressure is connected to a pilot chamber of a brake cylinder exhaust control valve for actuating a brake cylinder exhaust valve to its closed position, while concurrently, connecting the single reservoir pressure to the car brake cylinders. Pressure limiting means is provided to assure that sufficient pressure remains in the single reservoir following a full service or overreduction application for the purpose of providing additional braking pressure during an emergency brake application.In the event the brake pipe reduction is only due to a pressure transient of short term duration, the service valve assembly is capable of dissipating sufficient reservoir pressure to counteract such brake pipe transient and accordingly prevent its movement to service application position.
摘要翻译： 一种用于铁路车辆的制动控制阀装置，其具有经过制动管和作用在第一活塞上的单个储存器之间的压力差并且作用在组件的第二活塞上的缸的输送压力的维修阀活塞组件。 制动管减速致动维修阀组件朝向维修应用位置，在该位置，单个储存器压力连接到制动缸排气控制阀的先导室，用于致动制动缸排气阀至其关闭位置，同时 将单个油箱压力连接到汽车制动液压缸。 提供压力限制装置，以确保在全面服务或过度减速应用之后在单个容器中保持足够的压力，以便在紧急制动应用期间提供额外的制动压力。
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公开(公告)号：USRE29831E
公开(公告)日：1978-11-14
申请号：US796783
申请日：1977-05-13
申请人： Eugene D. McEathron
发明人： Eugene D. McEathron
IPC分类号： B60T15/42
CPC分类号： B60T15/42
摘要： A fluid brake control system is disclosed having an improved emergency application and stability control device for use in association with a brake control pipe, emergency and auxiliary fluid reservoirs, a first quick action chamber, a brake cylinder, and emergency and service control valves. An improved emergency application and stability control valve is provided comprising a housing containing a differential abutment subject to actuation axially by differences in fluid pressures in respective brake pipe pressure and quick action control pressure chambers on opposite sides of the abutment. The control device has at least one ball poppet type valve on each side of the abutment that is spring biased toward a closed position and has an operating push rod longitudinally disposed between the associated valve and the abutment. The poppet valve on one side of the abutment is opened by movement of the abutment in one direction for permitting application of fluid from the emergency reservoir to the brake cylinder. The poppet valve on the other side of the abutment is opened by movement of the abutment in the opposite direction to permit charging of the first quick action chamber at a controlled rate from the brake pipe. A stabilizing spring is provided in the brake pipe pressure chamber biasing the abutment normally in a direction to close the poppet valve on said one side of the abutment and to open the poppet valve on the other side of the abutment.
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公开(公告)号：US4106819A
公开(公告)日：1978-08-15
申请号：US825748
申请日：1977-08-18
申请人： James E. Hart
发明人： James E. Hart
摘要： An inexpensive emergency valve device embodies a cycling-type continual quick service valve operative by an abutment, subject on its respective opposite sides to the pressure in a train brake pipe and in a quick action chamber, in response to a service rate of reduction of the pressure of the fluid in a train brake pipe to repeatedly vent and supply fluid under pressure from and to a quick service volume disposed on one side of a diaphragm-type valve that is operatively responsive to the venting of fluid under pressure from this volume to effect the release of fluid under pressure from the quick action chamber to atmosphere at a rate faster than a service rate to cause joint cyclic operation of the continual quick service valve and the diaphragm valve to successively supply fluid under pressure from the brake pipe to and thereafter release fluid under pressure from the quick service volume at a certain rate and from the quick action chamber at a faster rate so long as fluid under pressure is released from the train brake pipe at a service rate. An emergency piston disposed within the quick service volume cooperates with the diaphragm valve in response to an emergency rate of reduction of the pressure in the brake pipe to effect operation of a brake pipe vent valve and a poppet-type valve that effects the supply of fluid under pressure from an emergency reservoir to a brake cylinder jointly with the supply from an auxiliary reservoir to cause an emergency brake application.
摘要翻译： 廉价的应急阀装置体现了一种循环式连续快速操作阀，其由邻接件操作，响应于减速的服务速率，在其相应的相对侧对列车制动管和快速动作室中的压力进行操作 在列车制动管中的流体的压力反复地排出并且在压力下从设置在隔膜式阀的一侧上的快速使用体积供应流体，其可操作地响应于来自该体积的压力下的流体的排放 将压力下的流体从快速动作室以比服务速度快的速度释放到大气中，以使得连续快速操作阀和隔膜阀的联合循环操作在压力下从制动管连续地供给流体，然后释放 流体在压力下以快速使用体积以一定速率和快速动作室以更快的速率流动，只要流体在压力下 ü从服务速度从列车制动管道释放。 设置在快速使用容积内的紧急活塞响应于制动管中的压力的降低的紧急速率而与隔膜阀配合，以实现制动管通气阀和提供阀的阀，该阀提供流体 在紧急储存器的压力下，与来自辅助储存器的供应源一起产生制动缸以引起应急制动。
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公开(公告)号：USRE29722E
公开(公告)日：1978-08-08
申请号：US796784
申请日：1977-05-13
申请人： Eugene D. McEathron
发明人： Eugene D. McEathron
摘要： A fluid brake control system is disclosed having an improved quick service and accelerated release control device having valves operable when rendered effective to locally reduce the brake pipe pressure to accelerate a brake application signal through a train and at other times to apply fluid to the brake pipe for accelerating the release of brakes of a train. The control device comprises a housing containing a fluid pressure differential operated abutment subject to actuation from a normal position by differences in pressure between respective brake pipe and reference fluid pressure chambers on opposite sides of the abutment. Two quick service valves of the ball poppet type are provided on one side of the abutment that are spring biased in the direction of the abutment against their valve seats to normally closed positions and have operating push rods longitudinally disposed between the associated ball poppet valves and one side of the abutment. A ball poppet valve on the other side of the abutment is also normally closed and is opened by movement of the abutment in the other direction for delivering fluid from an emergency reservoir to the brake pipe for providing accelerated release.
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46.发明授权Two-pressure brake control valve for single stage releasing indirectly acting airbrakes 失效双级制动控制阀，用于单级释放间接作用的气动制动器
公开(公告)号：US4103976A
公开(公告)日：1978-08-01
申请号：US820705
申请日：1977-08-01
申请人： Peter Pick
发明人： Peter Pick
摘要： A two-pressure brake control valve for a single stage releasing indirectly acting airbrake particularly for railway vehicles has a service brake portion in which is a main control element to control a valve so as to subject a brake cylinder to the action of air from an auxiliary air reservoir in response to a decrease in pressure in the brake line per unit time below a predetermined value. An emergency brake portion has a main piston as a main control element and an auxiliary piston is mounted on this main piston. The main piston controls a second valve to further subject the brake cylinder to the action of air from an emergency brake reservoir in response to a decrease in pressure in the brake line per unit time exceeding the predetermined value. A service brake accelerator valve is actuated by the auxiliary piston in response to a variation of pressure in the brake line during a service braking operation when the main piston is in an inactive position.
摘要翻译： 用于单级释放间接作用的空气制动器，特别用于铁路车辆的双压制动控制阀具有行车制动部分，其中作为控制阀的主要控制元件，以使制动缸受到来自辅助件的空气的作用 响应于每单位时间内的制动管路中的压力降低到预定值以下的空气储存器。 紧急制动部具有主活塞作为主控制元件，辅助活塞安装在该主活塞上。 主活塞控制第二阀，以响应于每单位时间内超过预定值的制动管路中的压力降低，进一步使制动缸从紧急制动器储存器的作用受到影响。 当主活塞处于非活动位置时，在制动操作期间响应于制动管路中的压力变化，由辅助活塞致动行车制动加速器阀。
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公开(公告)号：US4090738A
公开(公告)日：1978-05-23
申请号：US650861
申请日：1976-01-21
申请人： Robert J. Bray
发明人： Robert J. Bray
CPC分类号： B60T15/42
摘要： A bracking system for tractor-trailer combinations wherein the air delivery time to the trailer brakes is substantially reduced. A boost-air assembly having its own air supply is mounted at the forward end of the air delivery system. The assembly includes a fast-acting amplifying relay valve, a closely-coupled air tank and a bracket for mounting the valve and the tank. In the prime embodiment, the assembly is mounted on the tractor proximate the rear thereof to significantly reduce the time required to transmit a control pressure to the trailer brake actuators because (1) less time is required for the control pressure to reach the amplifying valve, (2) the fast response time of the valve, (3) the amplification achieved by the valve and (4) the proximity of the closely-coupled auxiliary air tank. Alternate mounting loctions are also taught for mounting one or more boost-air assemblies for even further lessening air delivery time to the trailer brakes.
摘要翻译： 用于拖拉机 - 拖车组合的起重系统，其中对拖车制动器的空气输送时间显着减小。 具有自己的空气供应的升压组件安装在空气输送系统的前端。 组件包括一个快速放大继电器阀，一个紧密联接的空气罐和一个用于安装阀门和油箱的支架。 在主要实施例中，组件在靠近其后部的情况下安装在拖拉机上，以显着减少向拖车制动器致动器传递控制压力所需的时间，因为（1）控制压力到达放大阀所需的时间越少， （2）阀的快速响应时间，（3）由阀门实现的放大和（4）紧密耦合的辅助空气罐的接近。 还教导了替代安装装置，用于安装一个或多个增压空气组件，以进一步减少拖车制动器的空气输送时间。
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48.发明授权
公开(公告)号：US4026609A
公开(公告)日：1977-05-31
申请号：US717984
申请日：1976-08-26
申请人： Robert J. Bridigum
发明人： Robert J. Bridigum
摘要： A railway vehicle fluid pressure operable emergency vent valve responsive to a reduction of brake pipe pressure at a rate in excess of a certain rate, or at an emergency rate, for unrestrictedly venting the brake pipe to atmosphere and thus propagating an emergency brake application, but also sensitive and operable responsively to a reduction of brake pipe pressure, irrespective of rate or at a normally undetectable rate, to a value insufficient for effective brake control, for initiating an emergency brake application.
摘要翻译： 一种铁路车辆流体压力可操作的紧急排气阀，其响应于以超过一定速率或以紧急速率降低制动管压力，用于将制动管不受限制地排放到大气中，从而传播紧急制动应用，但是 对于启动紧急制动应用，响应于制动管压力的降低而不管速率或通常不可检测的速率都响应于不足以有效制动控制的值而敏感和可操作。
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公开(公告)号：US3511543A
公开(公告)日：1970-05-12
申请号：US3511543D
申请日：1967-11-14
申请人： ABEX CORP
CPC分类号： B60T13/665 , B60T13/16
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公开(公告)号：US3022121A
公开(公告)日：1962-02-20
申请号：US85719159
申请日：1959-12-03
发明人： PICKERT LYNN I
IPC分类号： B60T15/42
CPC分类号： B60T15/42 , Y10T477/87
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