System for the control of the progression of several railway trains in a network
March 19, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3601602 3676669 3808427 3888437 Vehicle position indicator with radar interrogation each of spaced transponders disposed along a pathway for the vehicle Train position indicator Control system with improved communication for centralized control of vehicles Speed control device for trains Radio based railway signaling and traffic control system Communicating vital control signals InventorAssigneeApplicationNo. 496202 filed on 03/19/1990US Classes:246/5, Selective246/182B, Automatic vehicle-carried braking246/187BNon-mechanical control of vehicles from waysideExaminersPrimary: Werner, Frank E.Assistant: Lowe, Scott L. Attorney, Agent or FirmForeign Patent References
International ClassesB61L 003/16B61L 025/02 Foreign Application Priority Data1989-03-17 FRAbstractEach train is equipped with an on-board device for detecting the position of the train with respect to the track and with a transmitter-receive communicating with a central station. The central station has an instantaneous storage of the relative positions of all of the trains in the network, storage of the itineraries of each train, the characteristics of the network related to the speed range, and of the performance of the rolling stock in service. The central station constitutes the organizing unit of the system and comprises a transmission at regular time intervals of messages containing the identification numbers of the trains in circulation which are authorized to follow their route, taking account of position information received from these trains by the central station and of speed range parameters contained in the storage. The device on board each train constitutes an execution unit of the system and recognizes the identification number of the train with which it is associated and controls the stopping of the train in the absence of the identification number in the message which it receives from the central station.Field of SearchCentral signal controlSelective TRAIN-POSITION INDICATION CAB SIGNAL OR TRAIN CONTROL Vehicle-vehicle distance measuring Speed-control systems Track brake speed control Automatic vehicle-carried braking Automatic vehicle-carried speed comparison circuits Electric Remote control Non-mechanical control of vehicles from wayside | |
