A detection and indication system for use in a railway switch machine which utilizes one or more roller members which physically interact with a point detector bar coupled to one or more switch points to provide an indication of a point failure upon movement of the point detector bar a predetermined distance from an initial position. The system includes a mounting structure structured to be coupled to a housing of the switch machine and a first sensing device coupled to the mounting structure. The first sensing device is positioned and structured to detect movement of the point detector bar a second predetermined distance from the initial position, wherein the second predetermined distance is less than the first predetermined distance.
B61L 5/00 - Local operating mechanisms for points or track-mounted scotch-blocksVisible or audible signalsLocal operating mechanisms for visible or audible signals
B61L 5/10 - Locking mechanisms for pointsMeans for indicating the setting of points
G01M 99/00 - Subject matter not provided for in other groups of this subclass
2.
POINT DETECTION CALIBRATION BEFORE SWITCH MACHINE FAILURE
A detection and indication system for use in a railway switch machine which utilizes one or more roller members which physically interact with a point detector bar coupled to one or more switch points to provide an indication of a point failure upon movement of the point detector bar a predetermined distance from an initial position. The system includes a mounting structure structured to be coupled to a housing of the switch machine and a first sensing device coupled to the mounting structure. The first sensing device is positioned and structured to detect movement of the point detector bar a second predetermined distance from the initial position, wherein the second predetermined distance is less than the first predetermined distance.
A mechanism for coupling a switch point to a point detector box having a point detector bar includes a first portion structured to be slidably coupled to the point detector bar and a second portion structured to be slidably coupled to the switch point.
A sequential monitoring system is for an interlocking logic system and a track circuit system including a plurality of track circuits. The sequential monitoring system includes an interface between the interlocking logic system and the track circuit system; and a processor structured to monitor a state of each of the track circuits, validate a sequence of state changes of the track circuits, and interrupt and correct invalid track circuit state indications between the track circuit system and the interlocking logic system. The interface normally passes inputs from the track circuit system to outputs to the interlocking logic system. When an out of sequence event occurs, the processor applies a quarantine to a minimum of three of the track circuits in a quarantined area, thereby inhibiting use of an unoccupied track circuit in the quarantined area.
B61L 5/00 - Local operating mechanisms for points or track-mounted scotch-blocksVisible or audible signalsLocal operating mechanisms for visible or audible signals
B61L 27/04 - Automatic systems, e.g. controlled by trainChange-over to manual control
B61L 27/00 - Central railway traffic control systemsTrackside controlCommunication systems specially adapted therefor
B61L 3/22 - Continuous control along the route using magnetic or electrostatic inductionContinuous control along the route using electromagnetic radiation
An electronic amplifier includes a configurable integrated circuit device structured to synthesize at least a first signal and a second signal, scale the first signal to create a scaled first signal and scale the second signal to create a scaled second signal, create a discrete time composite signal which comprises a summation of at least the scaled first signal and the scaled second signal, create a discrete time pulse width modulated signal based on the discrete time composite signal, and generate a number of control signals based on the discrete time pulse width modulated signal. The electronic amplifier also includes a power switching stage receiving the number of control signals from the configurable integrated circuit device, wherein the number of control signals are configured to control the power switching stage, and a low pass filter coupled to an output of the power switching stage.
An electronic amplifier includes a configurable integrated circuit device structured to synthesize at least a first signal and a second signal, scale the first signal to create a scaled first signal and scale the second signal to create a scaled second signal, create a discrete time composite signal which comprises a summation of at least the scaled first signal and the scaled second signal, create a discrete time pulse width modulated signal based on the discrete time composite signal, and generate a number of control signals based on the discrete time pulse width modulated signal. The electronic amplifier also includes a power switching stage receiving the number of control signals from the configurable integrated circuit device, wherein the number of control signals are configured to control the power switching stage, and a low pass filter coupled to an output of the power switching stage.
A programmable logic apparatus includes a shared memory having a first port, a second port and a third port; a first vital processor interfaced to the first port of the shared memory; and a non-vital communications processor separated from the first vital processor in the programmable logic apparatus and interfaced to the second port of the shared memory. The third port of the shared memory is an external port structured to interface an external second vital processor.
A method of testing a target electronic device implemented in a configurable integrated circuit device includes receiving a baseline design for the target electronic device in a hardware description language, establishing a fault model for the particular configurable integrated circuit device, synthesizing the fault model in the hardware description language, embedding the synthesized fault model into the baseline design to create a modified baseline design in the hardware description language which enables one or more targeted signals to be selectively corrupted, creating a fault model enabled target device on the particular configurable integrated circuit device using the modified baseline design, performing a number of fault injection experiments on the fault model enabled target device, wherein each fault injection experiment includes causing at least one of the one or more targeted signals to be corrupted within the fault model enabled target device.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Freight and passenger railroad and urban rail transit traffic management and signaling software and computer hardware. (1) Engineering services in the freight and passenger railroad and urban rail transit traffic management and signaling fields.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Freight and passenger railroad and urban rail transit traffic management and signaling software and computer hardware. (1) Engineering services in the freight and passenger railroad and urban rail transit traffic management and signaling fields.
12.
METHOD FOR ADJUSTING BRAKING PARAMETERS OF A TRAIN TO ACCOUNT FOR TRAIN CHARACTERISTIC PARAMETER VARIATIONS
A method of adjusting one or more of braking parameters used in a braking function to control braking of a train includes determining an adjustment factor based on a joint stopping distance probability distribution, the joint stopping distance probability distribution representing the composite effect on stopping distance of a plurality of predetermined train characteristic parameters, each of the predetermined train characteristic parameters being variable, and applying the adjustment factor to each of the one or more of braking parameters. Also, a method of adjusting braking parameters that includes determining an adjustment factor based on a nominal value, a worst case limit value and a best case limit value of each of a plurality of predetermined train characteristic parameters, each of the predetermined train characteristic parameters being variable, and applying the adjustment factor to each of the one or more of braking parameters.
A method of testing a target electronic device implemented in a configurable integrated circuit device includes receiving a baseline design for the target electronic device in a hardware description language, establishing a fault model for the particular configurable integrated circuit device, synthesizing the fault model in the hardware description language, embedding the synthesized fault model into the baseline design to create a modified baseline design in the hardware description language which enables one or more targeted signals to be selectively corrupted, creating a fault model enabled target device on the particular configurable integrated circuit device using the modified baseline design, performing a number of fault injection experiments on the fault model enabled target device, wherein each fault injection experiment includes causing at least one of the one or more targeted signals to be corrupted within the fault model enabled target device.
A method of adjusting one or more of braking parameters used in a braking function to control braking of a train includes determining an adjustment factor based on a joint stopping distance probability distribution, the joint stopping distance probability distribution representing the composite effect on stopping distance of a plurality of predetermined train characteristic parameters, each of the predetermined train characteristic parameters being variable, and applying the adjustment factor to each of the one or more of braking parameters. Also, a method of adjusting braking parameters that includes determining an adjustment factor based on a nominal value, a worst case limit value and a best case limit value of each of a plurality of predetermined train characteristic parameters, each of the predetermined train characteristic parameters being variable, and applying the adjustment factor to each of the one or more of braking parameters.
A railroad monitoring apparatus includes first and second diverse vital processing units, first and second current sensors configured to measure the current being provided to one or more signaling elements of an item of wayside signaling equipment, and means for measuring voltage levels being supplied to each of the signaling elements. The first processing unit receives a first current measurement from the first current sensor and the measured voltage levels, and the second vital processing unit receives a second current measurement from the second current sensor and the measured voltage levels. The vital processing units are each programmed to determine based on one or more of the first current measurement, the second current measurement and the measured voltage levels: (i) the state of the item of railroad wayside signaling equipment, (ii) failures within the item of railroad wayside signaling equipment, and (iii) failures within the monitoring apparatus itself.
A railroad monitoring apparatus includes first and second diverse vital processing units, first and second current sensors configured to measure the current being provided to one or more signaling elements of an item of wayside signaling equipment, and means for measuring voltage levels being supplied to each of the signaling elements. The first processing unit receives a first current measurement from the first current sensor and the measured voltage levels, and the second vital processing unit receives a second current measurement from the second current sensor and the measured voltage levels. The vital processing units are each programmed to determine based on one or more of the first current measurement, the second current measurement and the measured voltage levels: (i) the state of the item of railroad wayside signaling equipment, (ii) failures within the item of railroad wayside signaling equipment, and (iii) failures within the monitoring apparatus itself.
A light assembly includes a lighting module having a number of LEDs and a reflector assembly disposed on the lighting module. The reflector assembly includes a number of individual reflector portions, each reflector portion being of generally concave shape and structured to selectively direct light emitted from a respective one of the number of LEDs. A lens member is disposed over the reflector assembly and a membrane is disposed between the reflector member and the lens.
An output apparatus includes a first source of a first signal having a first state or a different second state; a second source of a second signal having a first state or a different second state; and a circuit structured to output a vital output including a first state when the first state of the first signal corresponds to the first state of the second signal and, otherwise, including a different second state. At least one of the first signal and the second signal is a static signal. The other one of the first signal having the first state and the second signal having the first state is a dynamic signal. When at least one of the first signal has the different second state of the first signal and the second signal has the different second state of the second signal, the vital output includes the different second state.
H02M 3/337 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
A system for serially transmitting vital data includes first and second processors to determine first and second data, a serial communication apparatus to input third data and output serial data based upon the third data, and a memory having first and second ports accessible by the first and second processors, a first memory writable by the first processor and readable by the second processor, and a second memory writable by the second processor and readable by the first processor. The first and second processors store the first and second data in the first and second memories, cooperatively agree that the first data corresponds to the second data, and responsively cause the apparatus to employ: one of the first and second data as the third data, or parts of the first and second data as the third data, and output the serial data based upon the third data.
System and method for vitally determining position and position uncertainty of a railroad vehicle employing diverse sensors including a global positioning system sensor
A system vitally determines a position of a train. The system includes a plurality of diverse sensors, such as tachometers and accelerometers, structured to repetitively sense at least change in position and acceleration of the train, a global positioning system sensor, which is diverse from each of the diverse sensors, structured to repetitively sense position of the train, and a track map including a plurality of track segments which may be occupied by the train. A processor cooperates with the diverse sensors, the global positioning system sensor and the track map. The processor includes a routine structured to provide measurement uncertainty for each of the diverse sensors and the global positioning system sensor. The routine cross-checks measurements for the diverse sensors, and cross-checks the global positioning system sensor against the track map. The routine provides the vitally determined position of the train and the uncertainty of the vitally determined position.
G01C 21/10 - NavigationNavigational instruments not provided for in groups by using measurement of speed or acceleration
21.
SYSTEM AND METHOD FOR VITALLY DETERMINING POSITION AND POSITION UNCERTAINTY OF A RAILROAD VEHICLE EMPLOYING DIVERSE SENSORS INCLUDING A GLOBAL POSITIONING SYSTEM SENSOR
A system vitally determines a position of a train. The system includes a plurality of diverse sensors, such as tachometers and accelerometers, structured to repetitively sense at least change in position and acceleration of the train, a global positioning system sensor, which is diverse from each of the diverse sensors, structured to repetitively sense position of the train, and a track map including a plurality of track segments which may be occupied by the train. A processor cooperates with the diverse sensors, the global positioning system sensor and the track map. The processor includes a routine structured to provide measurement uncertainty for each of the diverse sensors and the global positioning system sensor. The routine cross-checks measurements for the diverse sensors, and cross-checks the global positioning system sensor against the track map. The routine provides the vitally determined position of the train and the uncertainty of the vitally determined position.
G01C 21/00 - NavigationNavigational instruments not provided for in groups
G01S 19/48 - Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system
B61L 25/02 - Indicating or recording positions or identities of vehicles or trains
G01S 19/50 - Determining position whereby the position solution is constrained to lie upon a particular curve or surface, e.g. for locomotives on railway tracks
22.
Apparatus, system and method for outputting a vital output for a processor
An apparatus outputs a vital output for a processor including an output state. The apparatus includes a first input receiving the output state, two independent circuits each of which includes a second input electrically interconnected with the first input, a third input, a fourth input and an output including the output state. Each of the independent circuits repetitively monitors the output and the third and fourth inputs of a corresponding one of the independent circuits to confirm agreement therebetween. Each of two switches is controlled by the output of the corresponding one of the independent circuits. The switches cooperate to form the vital output. Each of two feedback circuits is between the output and the third input of the corresponding one of the independent circuits, and also between the output of the corresponding one of the independent circuits and the fourth input of the other one of the independent circuits.
F02P 3/02 - Other electric spark ignition installations characterised by the type of ignition power generation storage having inductive energy storage, e.g. arrangements of induction coils
23.
SYSTEM AND METHOD FOR CONTROLLING BRAKING OF A TRAIN
A method of controlling braking of a train that includes obtaining in an on-board computer of the train a brake propagation delay time (Td), a brake build-up time (T) and a maximum brake rate (αmax) for the train, and controlling braking of the train in the on-board computer by generating one or more braking signals for the train using Td, T and αmax. Also, a methods of determining for a train a profile velocity to a target position of a selected target, selecting a most restrictive target from among a plurality of targets for a train,and determining a plurality of braking parameters for a train having a train consist, wherein the parameters include a brake propagation delay time (Td), a brake build-up time (T) and a maximum brake rate (αmax).
B60T 8/34 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
A switch machine that includes a first relay having first normally open contacts and first normally closed contacts provided in the normal motor connection path and a second relay having second normally open contacts and second normally closed contacts provided in the reverse motor connection path. The normally open and closed contacts of each relay are associated in pairs and the first relays are structured such that each normally closed contact and the corresponding normally open contact cannot be simultaneously closed. Also, a method of protecting a motor of a switch machine that includes integrating a current being drawn by the motor and opening a motor circuit that includes the motor if the integrated current exceeds a threshold.
A switch machine that includes a first relay having first normally open contacts and first normally closed contacts provided in the normal motor connection path and a second relay having second normally open contacts and second normally closed contacts provided in the reverse motor connection path. The normally open and closed contacts of each relay are associated in pairs and the first relays are structured such that each normally closed contact and the corresponding normally open contact cannot be simultaneously closed. Also, a method of protecting a motor of a switch machine that includes integrating a current being drawn by the motor and opening a motor circuit that includes the motor if the integrated current exceeds a threshold.
B61L 5/06 - Electric devices for operating points or scotch-blocks
B61L 5/10 - Locking mechanisms for pointsMeans for indicating the setting of points
B61L 19/08 - Special arrangements for power supply for interlocking devices
H02H 7/08 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
26.
Cab signal receiver demodulator employing redundant, diverse field programmable gate arrays
A processor includes a first field programmable gate array (FPGA) having a first central processing unit (CPU) core programmed to perform a first function, and first programmable hardware logics (PHLs) programmed to perform a second function. A second FPGA includes a second CPU core programmed to perform a third function, and second PHLs programmed to perform a fourth function. A communication interface is between the first and second CPU cores. The first and second FPGAs are diverse. A portion of the first function communicates first information from the first CPU core to the second CPU core through the interface. A portion of the third function communicates second information from the second CPU core to the first CPU core through the interface, and, otherwise, the first function is substantially the same as the third function. The second function is substantially the same as the fourth function.
A processor includes a first field programmable gate array (FPGA) having a first central processing unit (CPU) core programmed to perform a first function, and first programmable hardware logics (PHLs) programmed to perform a second function. A second FPGA includes a second CPU core programmed to perform a third function, and second PHLs programmed to perform a fourth function. A communication interface is between the first and second CPU cores. The first and second FPGAs are diverse. A portion of the first function communicates first information from the first CPU core to the second CPU core through the interface. A portion of the third function communicates second information from the second CPU core to the first CPU core through the interface, and, otherwise, the first function is substantially the same as the third function. The second function is substantially the same as the fourth function.
G06F 15/78 - Architectures of general purpose stored program computers comprising a single central processing unit
B61L 3/12 - Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control controlling electrically using magnetic or electrostatic inductionDevices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control controlling electrically using radio waves
B61L 3/22 - Continuous control along the route using magnetic or electrostatic inductionContinuous control along the route using electromagnetic radiation
B61L 3/24 - Continuous control along the route using magnetic or electrostatic inductionContinuous control along the route using electromagnetic radiation employing different frequencies or coded pulse groups
G05B 19/05 - Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
H03K 19/177 - Logic circuits, i.e. having at least two inputs acting on one outputInverting circuits using specified components using elementary logic circuits as components arranged in matrix form
28.
Vital system for determining location and location uncertainty of a railroad vehicle with respect to a predetermined track map using a global positioning system and other diverse sensors
A system includes a global positioning system receiver to determine position of a railroad vehicle, a predetermined track map of possible coordinates of the vehicle, motion sensors providing a positive bias error to determine change in location of the vehicle, an acceleration sensor to determine acceleration of the vehicle, and a processor to vitally determine the location and the location uncertainty of the vehicle on the track map. The processor verifies one motion sensor with another motion sensor, determines a slip or slide condition of the vehicle from one of the motion sensors, determines speed and position of the vehicle from the acceleration sensor during the slip or slide condition, verifies the position of the vehicle from the global positioning system receiver based upon the track map, and corrects the positive bias error of the motion sensors using the position of the vehicle from the global positioning system receiver.
An improved LED signaling device employing a number of LEDs arranged in a specific pattern. At least some of the LEDs are received in a corresponding reflective cavity with an associated output angle. The LED signaling device also employs first and second lenses. The first lens collects the light emitted by the LEDs and disperses the light such that the second lens is flooded. The second lens collects the light dispersed by the first lens and collimates the light. The type of LEDs used, their specific pattern, the specific output angles of their corresponding reflective cavities, and the combination of the first and second lenses insure that the LED signaling device meets or exceeds the minimum luminous output intensity requirements and uniformity requirements.
A light emitting diode (LED) circuit includes first and second terminals, a forward circuit including a number of LEDs electrically connected in series, and a forward steering diode electrically connected in series with the LEDs. The series combination of the forward steering diode and the LEDs is electrically connected between the first and second terminals, and is structured to conduct current in a first direction with respect to the first and second terminals in order to illuminate the LEDs. A reverse circuit includes a resistor, and a reverse steering diode electrically connected in series with the resistor. The series combination of the reverse steering diode and the resistor is electrically connected between the first and second terminals, and is structured to conduct current in an opposite second direction with respect to the first and second terminals such that the LEDs are not illuminated. An LED drive circuit is also disclosed.
31.
Signal apparatus, light emitting diode (LED) drive circuit, LED display circuit, and display system including the same
A light emitting diode (LED) circuit includes first and second terminals, a forward circuit including a number of LEDs electrically connected in series, and a forward steering diode electrically connected in series with the LEDs. The series combination of the forward steering diode and the LEDs is electrically connected between the first and second terminals, and is structured to conduct current in a first direction with respect to the first and second terminals in order to illuminate the LEDs. A reverse circuit includes a resistor, and a reverse steering diode electrically connected in series with the resistor. The series combination of the reverse steering diode and the resistor is electrically connected between the first and second terminals, and is structured to conduct current in an opposite second direction with respect to the first and second terminals such that the LEDs are not illuminated. An LED drive circuit is also disclosed.
G09G 3/32 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
A railroad signaling method includes measuring a track current on a first track section, measuring a local voltage on the railroad line wires, determining whether a magnitude of the track current meets or exceeds a threshold value independent of the local voltage, and determining whether the track current and the local voltage are nominally in phase with one another in a manner that is independent of the track current measuring step. A first signal is provided only if the magnitude is determined to meet or exceed the threshold and the track current and local voltage are determined to be nominally in phase. The first signal is an indication that a train is not present in the track section, that the track section does not have a broken rail, and that the insulated joints that bound the track section do not include a fault condition. An associated relay arrangement is also provided.
A method provides sleep and wake-up modes for railway track circuit units. An intermediate track circuit unit communicates in a first direction to a first unit and in a different second direction to a different second unit. A plurality of wireless messages are employed between a train and a plurality of wayside units operatively associated with some of the track circuit units. Included with the wireless messages are a first identifier of a corresponding one of the track circuit units and a second identifier of a direction of travel of the train. One of the wireless messages is received at one of the wayside units corresponding to the intermediate unit based upon the first identifier. A signal is responsively output based upon the second identifier from the intermediate unit in the first direction to the first unit or in the different second direction to the different second unit.
A method generates optimized traffic movement plans. A plan monitor determines a first planning boundary for traffic based upon traffic conditions of a region. A plan generator employs the first planning boundary and repetitively generates first traffic movement plans for the traffic. The plan generator selects one of the first traffic movement plans as a first optimized traffic movement plan, and outputs the same for controlling traffic movement. The plan monitor determines current traffic conditions of the region for a planning window, and updates the first planning boundary to provide a second planning boundary for the traffic based upon the current traffic conditions. The plan generator employs the second planning boundary and repetitively generates second traffic movement plans for the traffic, selects one of the first and second traffic movement plans as a second optimized traffic movement plan, and outputs the same for controlling traffic movement.
An autonomous vehicle collision/crossing warning system provides for simple, inexpensive and decentralized installation, operation and maintenance of a reliable vehicle collision/crossing warning system. The autonomous warning system preferably utilizes a single frequency TDM radio communication network with GPS clock synchronization, time slot arbitration and connectionless UDP protocol to broadcast messages among vehicles and components in the warning system. Adaptive localized mapping of components of interest within the warning system eliminates the need for centralized databases or coordination and control systems and enables new vehicles and warning systems to be easily added to the system in a decentralized manner. Preferably, stationary warning systems are deployed as multiple self-powered units each equipped to receive broadcast messages and to communicate with the other units by a low power RF channel in a redundant Master-Slave configuration. The communication schemes are preferably arranged for low duty cycle operation to decrease power consumption.
A method provides sleep and wake-up modes for railway track circuit units. An intermediate track circuit unit communicates in a first direction to a first unit and in a different second direction to a different second unit. A plurality of wireless messages are employed between a train and a plurality of wayside units operatively associated with some of the track circuit units. Included with the wireless messages are a first identifier of a corresponding one of the track circuit units and a second identifier of a direction of travel of the train. One of the wireless messages is received at one of the wayside units corresponding to the intermediate unit based upon the first identifier. A signal is responsively output based upon the second identifier from the intermediate unit in the first direction to the first unit or in the different second direction to the different second unit.
03 - Cosmetics and toiletries; cleaning, bleaching, polishing and abrasive preparations
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
14 - Precious metals and their alloys; jewelry; time-keeping instruments
15 - Musical instruments
16 - Paper, cardboard and goods made from these materials
21 - HouseHold or kitchen utensils, containers and materials; glassware; porcelain; earthenware
28 - Games; toys; sports equipment
37 - Construction and mining; installation and repair services
41 - Education, entertainment, sporting and cultural services
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Friction car retarders, mechanical railway track switch and lock movements, facing point lock railway track switch movements, crank stands, train stops, buffer type rail contactors, railway track switch valves, oil buffer shock absorbers, reflector button signs, highway crossing gates, and train control governors.
(2) Electronic amplifiers, electrical power supplies, audio frequency oscillators, coded current transmitters, coded current decoding units, line circuit carrier modulators, tuned electrical alternators, battery charge control units, audio frequency overlay track circuit receivers, electrical switches, electrical inductors, electrical transformers, electrical reactors, electrical condensers, electrical relays, electrical relay snub units, electrical plug connectors, electrical network subassemblies, namely, resonant units, arc suppressors, interstage coupling units, electrical interference suppressors, passive networks, buffer coils and phase shift networks, electrical filters, and parts therefor, electrical contactors, lightning arresters, electromechanical audible indicators, voice operated calling devices, train communication systems, telephone communication apparatus of the modulated carrier wave type, and audial and visual indicating call detectors therefor, voice and/or code modulated carrier communication and/or indication and/or control equipment, and components thereof, namely, transmitters, receivers, modulators, and code repeaters, multiplex code control systems, data display and transfer systems, channel selectors for multiple indication, multiple channel locomotive cab signal systems, electronic systems for indicating at a station platform prior to the arrival of a train the origin, destination and/or class of the train, hermetically sealed and potted transformers and/or choke coils, interlocking systems for railways, railway signalling and/or control system sectionalizing units, train control systems, and parts therefor, namely, reversing switches, equipment boxes and receiver coils, office line, office and/or field coding units, auxiliary line units, field and/or line storage units, remote code indication systems, indication registry units, and train graph panels for centralized railway traffic control systems, car retarder systems, electric switch and lock movements, electric switch locks, railway slide detectors, impedance bonds for railway track circuits, draw bridge circuit controllers, highway crossing signals, electrically operated highway crossing bells, railway wayside visual motor car indicators, railway wayside and/or overhead visual signals, namely, light signals, dwarf signals and searchlight signals, locomotive cab signals, equipment boxes for train control systems, relay and/or filter and/or instrument cases, racks, panels and/or housings and junction and terminal boxes, alternating current pulse length recorders, carrier level meters for voice and/or code modulated carrier communication and/or indication and/or control equipment, mobile testing equipment for simulators, computers, electrical servomechanisms, and parts therefor, namely, servomotor operated ratiometers and servomechanism analyzers, portable electronic test sets, clockwork time releases, screw time releases, railroad dragging equipment detectors, training simulators, condenser-type timing units, apparatus for railway classification yards, namely, automatic track switching systems, car speed control systems, rolling resistance recording and storage units, and track capacity indicators, electronic systems for processing, storing and/or displaying traffic control information, portable electronic inductor test sets, DC/AC inverters, audible alarms, DC/AC converters, radar speed sensors and controls, wheel detectors, vehicle weighing rail units, incandescent and quartziodine lamps, rectifiers, transformers, plug-in relay mountings, timers, event recorders, logic emulators, programmable remote code computer interfaces, code emulators, equipment identification devices, and fixed and mobile satellite communication equipment.
(3) Vehicle axle tachometers, vehicle mounted track receivers, manually operated railway track switch machines, and vehicle identification transponder tags.
(4) Friction car retarders, mechanical railway track switch and lock movements, facing point lock railway track switch movements, crank stands, train stops, buffer type rail contactors, railway track switch valves, oil buffer shock absorbers, reflector button signs, highway crossing gates, and train control governors, electronic amplifiers, electrical power supplies, audio frequency oscillators, coded current transmitters, coded current decoding units, line circuit carrier modulators, tuned electrical alternators, battery charge control units, audio frequency overlay track circuit receivers, electrical switches, electrical inductors, electrical transformers, electrical reactors, electrical condensers, electrical relays, electrical relay snub units, electrical plug connectors, electrical network subassemblies, namely, resonant units, arc suppressors, interstage coupling units, electrical interference suppressors, passive networks, buffer coils and phase shift networks, electrical filters, and parts therefor, electrical contactors, lightning arresters, electromechanical audible indicators, voice operated calling devices, train communication systems, telephone communication apparatus of the modulated carrier wave type, and audial and visual indicating call detectors therefor, voice and/or code modulated carrier communication and/or indication and/or control equipment, and components thereof, namely, transmitters, receivers, modulators, and code repeaters, multiplex code control systems, data display and transfer systems, channel selectors for multiple indication, multiple channel locomotive cab signal systems, electronic systems for indicating at a station platform prior to the arrival of a train the origin, destination and/or class of the train, hermetically sealed and potted transformers and/or choke coils, interlocking systems for railways, railway signalling and/or control system sectionalizing units, train control systems, and parts therfor, namely, reversing switches, equipment boxes and receiver coils, office line, office and/or field coding units, auxiliary line units, field and/or line storage units, remote code indication systems, indication registry units, and train graph panels for centralized railway traffic control systems, car retarder systems, electric switch and lock movements, electric switch locks, railway slide detectors, impedance bonds for railway track circuits, draw bridge circuit controllers, highway crossing signals, electrically operated highway crossing bells, railway wayside visual motor car indicators, railway wayside and/or overhead visual signals, namely, light signals, dwarf signals and searchlight signals, locomotive cab signals, equipment boxes for train control systems, relay and/or filter and/or instrument cases, racks, panels and/or housings and junction and terminal boxes, alternating current pulse length recorders, carrier level meters for voice and/or code modulated carrier communication and/or indication and/or control equipment, mobile testing equipment for simulators, computers, electrical servomechanisms, and parts therefor, namely, servomotor operated ratiometers and servomechanism analyzers, portable electronic test sets, clockwork time releases, screw time releases, railroad dragging equipment detectors, training simulators, condenser-type timing units, apparatus for railway classification yards, namely, automatic track switching systems, car speed control systems, rolling resistance recording and storage units, and track capacity indicators, electronic systems for processing, storing and/or displaying traffic control information, portable electronic inductor test sets, DC/AC inverters, audible alarms, DC/AC converters, radar speed sensors and controls, wheel detectors, vehicle weighing rail units, incandescent and quartziodine lamps, rectifiers, transformers, plug-in relay mountings, timers, event recorders, logic emulators, programmable remote code computer interfaces, code emulators, equipment identification devices, fixed and mobile satellite communication equipment, vehicle axle tachometers, vehicle mounted track receivers, manually operated railway track switch machines, and vehicle identification transponder tags. (1) Office equipment servicing, including computer, monitor, printer, modem, relay repair, signal equipment integrity inspections, and training on basic electronics and signal maintenance.
(2) Training on basic electronics and signal maintenance, office equipment servicing, including computer, monitors, printer, modem, relay repair, and signal equipment integrity inspections.
06 - Common metals and ores; objects made of metal
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
(1) Castings for railway and signaling and interlocking apparatus; railway train control and cab signaling apparatus, highway crossing signal apparatus; and railway car retarders.
