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7577502 |
Proximity detection and communication mechanism and method
A vital proximity detection mechanism and method for reliably determining and communicating the position of a railroad switch point relative to a normal fixed track and a reverse fixed track,...
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7269487 |
Method for train positioning
In the state that a train moves from a track circuit 3T toward a track circuit 5T, and a train detection signal TD1 is supplied from the boundary between the track circuits 3T and 5T to the track...
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5936517 |
System to minimize the distance between trains
Each train detects its location, velocity, and the time it will spend to pass the next bifurcation, joint, and intersection, respectively, and sends the information periodically to the trains that...
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5467945 |
Apparatus for improved block control of train operation
The invention relates to an improved block control for controlling a train safely and efficiently along a railway system. The apparatus includes a mechanism for designating a train route, a...
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4550889 |
Traffic control system for single track railroad
Reversal of the established traffic direction is initiated by a request for an entering train movement at the existing exit end of the single track stretch. This deenergizes the adjacent traffic...
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4323210 |
Manual block traffic control and signaling system for railroads
Adjacent stations along a single track railroad without continuous train detection, are coupled by a communication channel over which distinctive signals requesting, acknowledging, accepting, and...
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3229112 |
Arrangement for controlling a direct voltage source
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3008041 |
Centralized traffic control system for railroads
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2976403 |
Railway traffic controlling apparatus
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2854566 |
Railway signaling system
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2851589 |
Railway traffic controlling apparatus
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2785295 |
Railway traffic controlling apparatus
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2785294 |
Railway traffic controlling apparatus
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