Railway switches and signals – Cab signal or train control – Derailment
Patent
1989-01-12
1990-01-23
Kashnikow, Andres
Railway switches and signals
Cab signal or train control
Derailment
246246, B61L 300, B61L 120
Patent
active
048953245
ABSTRACT:
A portable, reusable derailment signaling device has an elongated base, clamps on each end of the base adapted to affix the base firmly to the pedestals of spaced railroad tracks with the base positioned between the pedestals. Restraining shoulders are located on the base adjacent each end, and a cable is attached at its ends to the restraining shoulders and extends therebetween under substantial tension. One of the restraining shoulders has a movable segment to which the cable end is attached such that derailment force applied to the cable in a generally normal direction to its axis will cause the cable to deflect from its axis and cause the segment to move to actuate a transmission unit on the base that is electrically energizable to emit a radio signal. And an electrical power unit on the base is in electrical communication with the transmission unit and is actuable by movement of the segment to energize the transmission unit to emit a signal.
REFERENCES:
patent: 3902690 (1975-09-01), Wanha
patent: 3929308 (1975-12-01), Armstrong et al.
patent: 4133506 (1979-01-01), Webster
Kashnikow Andres
Newholm Timothy
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