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| Number | Title | Issue Date |
| 5039038 | Railroad communication system A radio communication control system for a lead unit and a plurality of remote units is disclosed. The system has a protocol for establishing a communication link between the lead unit and the one or more remote units in the system which prevents any of t... | 08/13/1991 |
| 5006847 | Train motion detection apparatus An apparatus and method is provided for determining when a train operating in a transit system is not moving along a provided travel path in accordance with the sensed actual occupancy time of a track signal block by that train in relation to a desired oc... | 04/09/1991 |
| 4882999 | Transportation system of a floated-carrier type In a transportation system of a floated-carrier type, a carrier is suspended from a guide rail, in a non-contact manner, and is propelled along the guide rail. The transportation system includes a plurality of track units, each having the ferromagnetic gu... | 11/28/1989 |
| 4860977 | Railway signalling system 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 provide... | 08/29/1989 |
| 4855737 | Track circuit signalling arrangement A digital signal is used for railway track circuit signalling. A digital signal comprises a pseudo-random binary sequence selected from a set of such sequences. The set is chosen to give the lowest possible cross-correlation between different sequences, t... | 08/08/1989 |
| 4735383 | Communicating vital control signals A railway vehicle control system comprises a railway track (1) and a plurality of transponders (N, N+1, N+2) at predetermined positions along the track. A railway vehicle (2) moves along the track, the vehicle having means (20, 21) for detecting each of t... | 04/05/1988 |
| 4611291 | Vital interface system for railway signalling An interface system providing vital inputs to and vital outputs from a vital processor of railway signals for railway signalling and control purposes, utilizes non-vital components such as diodes and transistors. The input interface translates a railway s... | 09/09/1986 |
| 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 line circuit section in the new direction. Line circuit deen... | 11/05/1985 |
| 4500058 | Modular control panel for miniature-railway switches A modular control panel for controlling the switching operations in a miniature- or model-railway-line has grooves which reproduce the railway tracks, contacts being applied to the groove bottoms in the neighborhood of railway crossings, and is improved b... | 02/19/1985 |
| 4266273 | System for controlling track-bound vehicles forming a train A system is disclosed for controlling vehicles equipped with computer systems from a center of a rapid transit system. If at least two vehicles equipped with computer systems form a train, and the computer system of the vehicle controlling the train fails... | 05/05/1981 |
| 4179739 | Memory controlled process for railraod traffic management A method for regulating vehicular traffic over a network of itineraries travelled by various vehicles such as railroad trains, or other public modes of transportation. On board, computer assisted vehicle control processes are advantageously combined with ... | 12/18/1979 |
| 3976272 | Control system for railroads A traffic control system for governing from a central office train control equipment such as track switches and track signals which are disposed along a stretch of railroad track. The control system is flexible in that it can operate with either the CTC (... | 08/24/1976 |
| 3944986 | Vehicle movement control system for railroad terminals Data and voice communication links are provided between a movement direction center, a data processing center, and all mobile work units of a railroad terminal control system. A work assignment input from the movement direction center, e.g., an order to a... | 03/16/1976 |
