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US 4,895,324 AGranted
Reusable derailment detection and signaling device
OwnerDon R. Bucklesinventor
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OwnerDon R. Bucklesinventor
Estimating the term…
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.
A portable, reusable derailment signaling device comprising elongated base means, clamping means on each end of said base means adapted to affix said base means firmly to the pedestals of spaced railroad tracks with said base means positioned therebetween, restraining means on said base means adjacent each end thereof, cable means attached at each of two respective ends to said restraining means and extending therebetween under substantial tension, one of said restraining means having a movable segment to which the cable end is attached such that derailment force applied to said cable in a generally normal direction to its axis will cause said cable to deflect from its axis and cause said segment to move, transmission means on said base means electrically energizeable to emit a radio signal, and electrical power means on said base means in electrical communication with said transmission means and actuable by said movement of said segment to energize said transmission means to emit said signal.
Dependencies are inferred from the claim text.