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1. 发明授权

US4763290A Apparatus for performing a fast Fourier transform 失效
标题翻译：用于执行快速傅里叶变换的装置
公开(公告)号：US4763290A
公开(公告)日：1988-08-09
申请号：US855247
申请日：1986-04-24
申请人： David W. Cowen
发明人： David W. Cowen
IPC分类号： G06F17/14 , H04L27/152 , G06F15/332
CPC分类号： H04L27/1525 , G06F17/141
摘要： In a railway vehicle safety system, a frequency modulated signal is transmitted to a vehicle informing, inter alia, of a safe maximum speed, the said speed being represented by the carrier modulation frequency. In addition, the frequency of the carrier may possess one of a number of alternative frequencies. Apparatus for analysing received signals to identify the carrier frequency and the modulation frequency employs a fast Fourier transform processor. In order to save computation time by eliminating useless calculations, a received signal is heterodyned by a local signal selected according to the carrier frequency identified and the base-band components are analysed to identify the modulation frequency. A first stage transform is performed to identify the carrier signal and select the local signal frequency for a complex heterodyne process in a second stage in which local signals in phase quadrature are mixed with the received signal and the results sampled to provide data for real and imaginary data arrays for the transform process. As a result of the second stage process, noise and common mode interference signals are rejected.
摘要翻译：在铁路车辆安全系统中，频率调制信号被发送到车辆，特别是通知安全最大速度，所述速度由载波调制频率表示。此外，载波的频率可以具有多个替代频率中的一个。用于分析接收信号以识别载波频率和调制频率的装置采用快速傅里叶变换处理器。为了通过消除无用的计算来节省计算时间，通过根据所识别的载波频率选择的本地信号对接收的信号进行外差，分析基带分量以识别调制频率。执行第一级变换以识别载波信号，并且在第二级中选择本地信号频率用于第二级，其中相位正交中的本地信号与接收信号混合，并且采样结果提供实际和虚拟的数据用于转换过程的数据数组。作为第二级处理的结果，噪声和共模干扰信号被拒绝。

2. 发明授权

US4117463A Circuit fault detection apparatus for railroad track circuit redundant connections 失效
标题翻译：电路故障检测装置用于铁路轨道电路冗余连接
公开(公告)号：US4117463A
公开(公告)日：1978-09-26
申请号：US815474
申请日：1977-07-14
申请人： David John Norton
发明人： David John Norton
IPC分类号： B61L1/20 , G01R31/02 , G08B21/00
CPC分类号： G01R31/026 , B61L1/20
摘要： Continuity detector apparatus is coupled into duplicate conductors connected in parallel between each rail of a track section and an energy source or occupancy receiver of an associated track circuit to detect and register a fault in either parallel conductor and to indicate need for corrective action to restore the operational security provided by the duplicate circuit paths. In one form, each detector is a two-winding relay with one winding inserted in series in each of the duplicate circuit paths so poled that equal track current flows in opposite directions in the winding, when both conductors are unbroken to hold the relay released. Any interruption of either parallel conductor causes the relay to pick up to register the fault and transmit a corresponding indication. In a second form, a different transformer winding is connected with each conductor. An alternating current voltage of selected frequency is applied to the other winding of one transformer which, if both track conductors are complete, causes a current to flow in a loop including each conductor. This produces an output from the other winding of the other transformer which is applied through a filter and amplifier to hold energized the detector relay. A break in either conductor interrupts the loop, deenergizing the relay which releases to register the fault and activate an indication to signal a need for repairs.

3. 发明授权

US4103977A Vehicle braking control valve apparatus for quick service operation 失效
标题翻译：车辆制动控制阀装置，用于快速运行
公开(公告)号：US4103977A
公开(公告)日：1978-08-01
申请号：US835191
申请日：1977-09-21
申请人： David John Wickham
发明人： David John Wickham
IPC分类号： B60T15/42
CPC分类号： B60T15/42
摘要： A continuous quick service device is proposed for use in conjunction with a direct release brake controlling triple valve and which, while not interfering with the emergency valve operation, operates by employing quick action chamber air both as a reference against which brake pipe pressure reductions are detected and as a source of air to operate a pressure responsive device in a reciprocating manner to discharge pulses of air from a reducing brake pipe to afford quick service operation of the triple valve both for initial application from a brakes released condition and for subsequent brake pipe pressure reductions giving rise to increased brake applications. A relay valve serves to operate the pressure responsive device to provide additional sensitivity.
摘要翻译：提出了一种连续快速维修装置，用于与直接释放制动控制三重阀结合使用，并且在不干扰紧急阀操作的情况下，通过采用快速动作室空气作为检测制动管压力降低的参考来进行操作并且作为空气源，以往复方式操作压力响应装置，以从减压制动管排出空气的脉冲，以提供三重阀的快速使用操作，以便从制动器释放状态和随后的制动管压力初始施加减少引起制动应用的增加。继动阀用于操作压力响应装置以提供额外的灵敏度。

4. 发明授权

US4860977A Railway signalling system 失效
标题翻译：铁路信号系统
公开(公告)号：US4860977A
公开(公告)日：1989-08-29
申请号：US76108
申请日：1987-07-21
申请人： David J. Norton
发明人： David J. Norton
IPC分类号： B61L3/22 , B61L19/06 , B61L25/06
CPC分类号： B61L19/06 , B61L25/06 , B61L3/221
摘要： A railway signalling system includes a plurality of trackside equipments (11,12) and means (1,2,3,4,6, 15,16) for transmitting control information to the equipments and receiving status information therefrom, each of the trackside equipments being provided with a respective microprocessor (13 or 14) via which such control information is transmitted from the said means to the equipment and via which such status information is received by said means from the equipment.
摘要翻译：轨道信号系统包括多个轨道侧设备（11,12）和用于向设备发送控制信息并从其接收状态信息的装置（1,2,3,4,6,15,16），每个轨道设备设置有相应的微处理器（13或14），通过该微处理器将这些控制信息从所述装置发送到设备，并且通过所述装置从所述装置接收所述状态信息。

5. 发明授权

US4305556A Railway control signal dynamic output interlocking systems 失效
标题翻译：铁路控制信号动态输出联锁系统
公开(公告)号：US4305556A
公开(公告)日：1981-12-15
申请号：US41594
申请日：1979-05-23
申请人： David J. Norton , Christopher R. Brown
发明人： David J. Norton , Christopher R. Brown
IPC分类号： B61L1/20 , B61L19/06 , G06F11/00 , B61L27/00
CPC分类号： G06F11/0796 , B61L1/20 , B61L19/06 , G06F11/184 , G06F11/181
摘要： A computer based railway interlocking control system, having triple parallel redundant control computers (FIG. 2) provides greater system reliability as compared to a single computer system. The railway traffic control devices, e.g. points and signals, are arranged to be controlled by signals in one of two possible steady states, the interlocking control means (30, 31, 32, FIG. 2) is arranged to produce control signals in the steady state for de-energized or "safe" device settings and in an alternating state for energized or potentially "unsafe" settings. The alternating control signals (33, 34, 35 or 38) must be converted to the corresponding steady state to operate the devices thus, the converting or restoring circuit discriminates against dormant wrong side failures, i.e. "unsafe" signals to increase the inherent safety of the system.
摘要翻译：具有三并联冗余控制计算机（图2）的基于计算机的铁路联锁控制系统与单个计算机系统相比提供了更大的系统可靠性。铁路交通控制装置，例如点和信号被布置成由两个可能稳态之一的信号控制，联锁控制装置（30,31,32，图2）被布置成产生处于稳定状态的控制信号以断电或“ 安全“设备设置，并处于交替状态，用于通电或潜在的”不安全“设置。必须将交流控制信号（33,34,35或38）转换为相应的稳态以操作设备，因此，转换或恢复电路可以区别于休眠的错误侧故障，即“不安全”信号，以增加固有的安全性系统。

6. 发明授权

US4234064A Slack adjuster means 失效
标题翻译：松弛调节装置
公开(公告)号：US4234064A
公开(公告)日：1980-11-18
申请号：US1420
申请日：1979-01-08
申请人： Geoffrey R. Tregoning
发明人： Geoffrey R. Tregoning
IPC分类号： F16D65/60 , F16D65/56
CPC分类号： F16D65/60
摘要： A slack adjuster for railway brakes has an input member to which a brake force is applied and an output member movable coaxially therewith, a coupling element via which a brake force is transmissible between the two members and which is positively engaged with one of the members via a cooperating helical engagement means and is engageable with the other member via clutching faces which are retained in force transmitting engagement by the reaction forces produced by the helical engagement means when a force is transmitted between the members for a brake application, the clutching faces being disengageable when such reaction forces are removed to permit relative rotation of the members and enable wear or slack in the brake rigging to be taken up.
摘要翻译：用于铁路制动器的松弛调节器具有施加制动力的输入构件和与其同轴移动的输出构件，耦合元件，通过该耦合元件，制动力可在两个构件之间传播并且通过该耦合元件与构件之一经由配合的螺旋接合装置，并且可以通过离合面与另一构件接合，所述离合面当力在制动器施加时在构件之间传递时由所述螺旋接合装置产生的反作用力而保持有力地传递接合，所述离合面可脱开当这种反作用力被移除以允许构件的相对旋转并且使得制动索具中的磨损或松弛被吸收时。

7. 发明授权

US4141179A Vehicle door arrangements 失效
标题翻译：车门安排
公开(公告)号：US4141179A
公开(公告)日：1979-02-27
申请号：US861665
申请日：1977-12-19
申请人： John C. Newson , Geoffrey R. Tregoning , James B. Digby
发明人： John C. Newson , Geoffrey R. Tregoning , James B. Digby
IPC分类号： B60J5/06 , B61D19/00 , E06B7/18 , E06B7/23 , E06B7/28
CPC分类号： B61D19/005 , B60J5/062 , E06B7/18 , E06B7/2318
摘要： A vehicle door arrangement in which a lower edge part of the door is retractable upwards into the main part of the door prior to opening. This ensures that when the vehicle is standing alongside a platform, there is no risk of the bottom of the door fouling the platform. The arrangement is particularly suitable for slide and plug doors which move outwards and then alongside the vehicle when opening. Even if the bottom of the door is normally above the platform, the invention provides an essential safety feature to cope with situations where the vehicle is abnormally depressed, e.g. by excessive loading or suspension failure. Moreover, the invention enables the height of the interior floor of vehicle to be optimized with respect to platform level so as to enhance passenger safety and convenience, whereas with prior art rigid one-piece doors, clearance requirements dictated non-optimum floor heights.
摘要翻译：一种车门装置，其中门的下边缘部分在打开之前可向上伸入门的主要部分。这确保了当车辆与平台一起站立时，门的底部没有污染平台的风险。该装置特别适用于打开时向外移动，然后与车辆一起移动的滑动和插塞门。即使门的底部通常在平台的上方，本发明提供了一种基本的安全特征，以应对车辆异常压下的情况，例如，通过过载或悬挂失效。此外，本发明能够使车辆内部底板的高度相对于平台水平进行优化，以便增强乘客的安全性和便利性，而对于现有技术的刚性单件门，间隙要求决定了非最佳地板高度。

8. 发明授权

US4113070A Brake actuator 失效
标题翻译：制动执行器
公开(公告)号：US4113070A
公开(公告)日：1978-09-12
申请号：US816133
申请日：1977-07-15
申请人： Philip Norman Paginton
发明人： Philip Norman Paginton
IPC分类号： B60T17/08 , F16D65/46 , F16D65/56
CPC分类号： B60T17/081 , F16D65/46
摘要： A brake actuator comprising: a piston-cylinder arrangement having a piston member and a cylinder member arranged for sliding motion relative to one another by fluid pressure medium; an elongate plunger longitudinally movable by one said member and comprising two mutually screw-threaded parts arranged to vary the effective or overall length of the plunger upon relative rotation of said two parts; a resilient spring torque motor for effecting said relative rotation, the torque motor being coupled to one of the parts for driving that part relative to the other part; and rotation preventing means comprising friction clutch or brake members coupled to said one part and releasable when the stroke of the plunger exceeds a pre-set or predetermined amount to permit torque transmission from the torque motor to said one part in a direction tending to increase the effective or overall length of the plunger.

9. 发明授权

US4109416A Vehicle door arrangements 失效
标题翻译：车门安排
公开(公告)号：US4109416A
公开(公告)日：1978-08-29
申请号：US745864
申请日：1976-11-29
申请人： John Chase Newson , Geoffrey Robinson Tregoning , James Baden Digby
发明人： John Chase Newson , Geoffrey Robinson Tregoning , James Baden Digby
IPC分类号： B60J5/06 , B61D19/00 , E06B7/18 , E06B7/23 , E06B7/28
CPC分类号： E06B7/18 , B60J5/06 , B60J5/062 , B61D19/005 , E06B7/2318
摘要： A vehicle door arrangement in which a lower edge part of the door is retractable upwards into the main part of the door prior to opening. This ensures that when the vehicle is standing alongside a platform, there is no risk of the bottom of the door fouling the platform. The arrangement is particularly suitable for slide and plug doors which move outwards and then alongside the vehicle when opening. Even if the bottom of the door is normally above the platform, the invention provides an essential safety feature to cope with situations where the vehicle is abnormally depressed, e.g. by excessive loading or suspension failure. Moreover, the invention enables the height of the interior floor of vehicle to be optimised with respect to platform level so as to enhance passenger safety and convenience, whereas with prior art rigid one-piece doors, clearance requirements dictated non-optimum floor heights.
摘要翻译：一种车门装置，其中门的下边缘部分在打开之前可向上伸入门的主要部分。这确保了当车辆与平台一起站立时，门的底部没有污染平台的风险。该装置特别适用于打开时向外移动，然后与车辆一起移动的滑动和插塞门。即使门的底部通常在平台的上方，本发明提供了一种基本的安全特征，以应对车辆异常压下的情况，例如，通过过载或悬挂失效。此外，本发明能够使车辆内部底板的高度相对于平台水平进行优化，以便增强乘客的安全性和便利性，而对于现有技术的刚性单件门，间隙要求决定了非最佳地板高度。

10. 发明授权

US4066916A Transistor drive circuits 失效
标题翻译：晶体管驱动电路
公开(公告)号：US4066916A
公开(公告)日：1978-01-03
申请号：US663246
申请日：1976-03-02
申请人： Kenneth Gordon King , Derek Ernest Burch
发明人： Kenneth Gordon King , Derek Ernest Burch
IPC分类号： H02M1/08 , H03K17/00
CPC分类号： H02M1/08
摘要： A transistor drive circuit arrangement in which the collector current of a transistor is passed through the primary or control windings of a direct current current-transformer or transductor and the secondary or output windings of the current-transformer or transductor control the passage of alternating current via rectifying means which provides base current drive for the transistor. Thereby the base current is directly related to instantaneous collector current which results in significant power economies relative to prior art arrangements in which the base is continuously over-driven to ensure permanent base-emitter saturation.
摘要翻译：一种晶体管驱动电路装置，其中晶体管的集电极电流通过直流电流互感器或变压器的主要或控制绕组，并且电流互感器或导体的次级或输出绕组控制交流电流通过为晶体管提供基极电流驱动的整流装置。因此，基极电流与瞬时集电极电流直接相关，这导致相对于其中基极连续过驱动以确保永久的基极 - 发射极饱和的现有技术布置的显着功率经济性。

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