Rail obstruction sensing means for a rail transportation system

Details Rail obstruction sensing means for a rail transportation system Rail obstruction sensing means for a rail transportation system

1975-08-12

1976-12-07

Spar, Robert J.

Railways

Track layers

Track raising car

104139, 104146, 104161, 246182B, B61B 1300

Patent

active

039955605

ABSTRACT:
In a rail transportation system, a sensor assembly is mountable on a rail vehicle for detecting, during the travel thereof, a rail obstruction which would inhibit continued and uninterrupted travel of the vehicle and for transmitting such detection to the vehicle speed control for regulating the same to thereby avoid a perilous situation. The sensor assembly includes a leashed sensor element which is guidingly propelled forwardly of the vehicle parallel to the rail at a distance required for a comfortable stop depending on vehicle speed. Travel of the sensor element is retarded upon contacting the obstruction thereby causing a reel to which the leash is connected to rewind and accordingly regulate the vehicle speed control to bring the travelling vehicle to a complete and safe stop if necessary.

REFERENCES:
patent: 400302 (1889-03-01), Clark
patent: 3365572 (1968-01-01), Strauss
patent: 3587470 (1971-06-01), Wilson
patent: 3749026 (1973-07-01), Carrasse
patent: 3921830 (1975-11-01), Bright

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