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5496003 |
System for transmission of information between the ground and moving objects, in particular in ground-train communications
A system for transmitting data between the ground and moving vehicles, for example consisting of a stretch of railway line V1 having beacons between the rails. The various beacons are connected to...
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4723739 |
Synchronous rectification track circuit
An improved audio frequency track circuit system utilizes a synchronous train detection arrangement and reduces the number of fixed code rate modulated carrier signals. As few as two carrier...
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4420133 |
Device for the transmission of information through the rails between a railway track and a group of vehicles running along this track
A system for transmitting data long rails of a railway track for reception by a receiver mounted on a vehicle of the train. The system includes resonance circuits defining contiguous zones which...
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4354649 |
Arrangement for continuously controlling track-bound vehicles
An arrangement enabling continuous control of vehicles on a track divided into individual areas comprises at least one track-conductor loop associated with the track in each of the areas having N...
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4352475 |
Audio frequency track circuit for rapid transit applications with signal modulation security
An audio frequency track circuit with improved security in the train detection function for rapid transit applications for use with uninsulated rails includes an improved transmitter and receiver....
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4349170 |
Safety coding process for track circuits
A process for coding track circuits allows particularly information to be transmitted to a vehicle travelling over a railway track divided into a succession of sections each equipped with a track...
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4325101 |
Vital electronic time delay circuit
A fail-safe electronic time delay circuit for providing a predetermined time delay period having an emitter-follower amplifier connectable to a source of recurrent signals, a voltage doubling...
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4235402 |
Train vehicle speed control apparatus
The present invention relates to a train vehicle speed control apparatus which recognizes a change in one of the acceleration rate or the deceleration rate of a train moving along the track and the...
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4165850 |
Safety device for a transport system
A safety device for a transport system in which a vehicle travels on a track divided into sequential sections operates to stop the vehicle when a parameter representing the motion of the vehicle...
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4103851 |
Continuous speed checking process for a powered vehicle and apparatus for carrying the process into effect
A method and apparatus for continuous supervision of both a vehicle's speed and deceleration over a track, provides overspeed detection in one set of conditions and under-deceleration detection...
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4081160 |
Fail-safe cab signal process for transmitting information by high-voltage pulsed track circuits, and apparatus for carrying the process into effect
A method and apparatus is provided for communicating information in the form of plural items of data between a first station and a rail vehicle by transmission of pulses at predetermined repetition...
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4065081 |
Alternating current track circuits
Alternating current track circuits are provided for the several adjoining track sections of a stretch of railway track, each of the track circuits comprising an alternating current code transmitter...
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4053879 |
Fail safe digital code rate generator
A digital code rate generator comprises a digital number generator driven by a clock running at an appropriate frequency. Preferably the digital number generator is arranged to simultaneously...
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4053128 |
Jointless high frequency track circuit systems for railroads
A stretch of railway track, has a high frequency track circuit transmitter and receiver and a cab signal transmitter coupled across track rails at each of several locations marking the ends of...
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4014503 |
Method and apparatus for control of central spacing of track-operated vehicles
Method and apparatus for central spacing control of track-operated vehicles, particularly railroad vehicles, along paths which are subdivided into individual track sections for the positioning of...
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4002314 |
Train vehicle speed control signal providing apparatus
The present invention relates to a train vehicle speed control signal providing apparatus operative with a frequency command speed control signal, and relates to the generation of the desired speed...
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3979091 |
Communication system for guideway operated vehicles
A communication system for track or guideway operated vehicles is disclosed. The system is adapted for two-way transmission between a vehicle and a wayside station and is provided with a...
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3973746 |
Collision avoidance system
A collision avoidance system adapted for railroad use comprising a track having connected thereto a plurality of first signal transmitters exciting the track by a first control signal within a...
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3906436 |
Detection system for the location of moving objects
Radio signals generated from a transmitter mounted on a moving object are induced into a plurality of crossed pairs of lines and into a reference pair of parallel lines. The difference in phase...
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3904157 |
Arrangement for measuring the distance between two successive objects
Means for eliminating interference between objects spaced along an electric line and arranged for measuring the distance between certain ones thereof. An apparatus involving spaced objects arranged...
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3902689 |
Arrangement for measuring the distance between two successive objects
An arrangement for measuring the distance between two successive track-carried objects which are equipped with a transmitter and a receiver. The transmitter of the forwardmost object transmits a...
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3887152 |
Automatic vehicle protection system
An automatic train protection system is disclosed for automatically operated vehicles. This system is not based upon the steel wheel riding on a steel rail and therefore is capable of use with...
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3884437 |
Train control system for transit vehicles
A plurality of biased, direct curent control relays, each requiring a predetermined high or low level of operating energy, are coupled across a two conductor signaling channel extending along the...
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3868075 |
Jointless coded track circuits for railroad signal systems
Track currents are supplied to the rails of adjoining sections at each location through a track transformer whose secondary serves as a low impedance cross bond to divide the track into sections...
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3836770 |
APPARATUS FOR MEASURING THE DISTANCE BETWEEN TWO SUCCESSIVE OBJECTS
The invention relates to and an apparatus for measuring the distance between two spaced objects and wherein either or both of said objects may be movable with respect to each other and/or with...
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3828225 |
FAIL-SAFE VEHICLE-CARRIED ANTI-COLLISION PROTECTION RECEIVER
This disclosure relates to a fail-safe vehicle-carried anti-collision receiver for automatically applying and releasing the service brakes to control the movement of a vehicle. The receiver...
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3794833 |
TRAIN SPEED CONTROL SYSTEM
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...
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3778761 |
VEHICLE ORIENTATION DETERMINATION
This invention relates to a device for determining the orientation of a vehicle so that this information can be used to correlate automatic vehicle control equipment to signalling information being...
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3772640 |
VEHICLE CONTROL SYSTEM WITH VEHICLE LOCATION ERROR CHECKING MEANS
A system for controlling the operation of a vehicle along the right of way from a remote wayside location has a first means including a ladder transmission line, or wiggle wire, along the wayside...
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3766378 |
MOVING OBJECT AUTOMATIC OPERATION SYSTEM
A moving object automatic operation system wherein moving objects travelling along a route are operated automatically in accordance with the data derived from the signal detected by an antenna...
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3760421 |
DIRECTION CONTROL IN A VEHICLE CONTROL SYSTEM
First and second antennas are situated adjacent first and second running surfaces respectively of a vehicle roadway. The first and second antennas provide first and second signal manifestations...
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3748466 |
VEHICLE CONTROL SYSTEM
The vehicle control system operates vehicles over the right-of-way divided into a plurality of zones and has control means for governung safe operation of the vehicle in accordance with traffic...
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3743935 |
METHOD AND APPARATUS FOR RECEIVING INFORMATION TRANSMITTED THROUGH RAILROAD TRACK CIRCUITS
A method and apparatus for receiving coded information transmitted through track circuits in a railroad block system to a vehicle moving along the railroad track. Successive track circuits...
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3731086 |
RAILROAD VEHICLE CONTROL SYSTEM
A railroad vehicle control system governed by a wayside computer has a communications channel for each track section in the territory for periodically exchanging information between said computer...
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3714419 |
SYSTEM FOR THE TRANSMISSION OF INFORMATION TO A VEHICLE ON RAILS
A system for transmitting additional information throughout a railroad communication system that uses unmodulated signals representing signalling information transmitted through the rails by...
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3710100 |
VEHICLE MOVEMENT CONTROL AND DETECTION METHOD AND APPARATUS
A vehicle movement control and detection system is divided into a plurality of vehicle control blocks, and the movement of a vehicle within a given vehicle control block is controlled by a vehicle...
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3681597 |
TRANSPORTATION SYSTEM
A vehicle has propelling means for propelling the vehicle along a track, a digital-to-analog converter for producing propulsion control signals for application to the propelling means, means for...
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3676669 |
APPARATUS FOR THE CENTRALIZED CONTROL OF THE OPERATION OF TRAINS
An apparatus for the centralized control of the operation of trains travelling in a network divided into zones, each zone being controlled by a central station that transmits coded messages to a...
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3669206 |
CONTAINER TRANSPORTING SYSTEM
Containers transported on containerships and the like are transferred between storage and shipping areas by means of automatic vehicles which travel along guiding cables buried in the roadways...
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3582644 |
FAIL-SAFE SPEED CONTROL SYSTEM FOR RAILROAD TRAINS
An improved fail-safe speed control system for railroad trains in which the traffic conditions which establish the permissible speed for a train are determined at a central station in accordance...
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3576524 |
SYSTEMS FOR TRANSMITTING INFORMATION TO MOVING TRAINS
A system for transmitting local information to a moving train in binary code comprising a number of conductor loops arranged one after the other along the track at the local information point and...
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3552692 |
RAILWAY CONTROL SYSTEM
A railway control system is provided in which one loop of wire extends for the length of a block along each block. The length of the trackway is divided into blocks. Provision is made for exciting...
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3532877 |
RAILWAY TRACK SIGNALLING SYSTEM
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3588494 |
PROCESS AND APPARATUS FOR MEASURING THE DISTANCE TRAVELLED BY A REMOTE CONTROLLED VEHICLE
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3441731 |
SOLID STATE SWITCHING DEVICE FOR USE IN CAB SIGNALING SYSTEMS
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3377483 |
Automatic control for trains and other vehicles
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3368072 |
Vehicle speed control system
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3297866 |
Magnetically transmitting control signals to vehicles
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3272979 |
Decoding apparatus for continuous inductive transmission system
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3263073 |
Electronic railway equipment
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