Accession Number : ADD002411

Title :   Overheated Journal Bearing Derailment Prevention System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Armstrong,John H ; Kluge,Frank C

Report Date : 06 Jan 1976

Pagination or Media Count : 8

Abstract : The patent relates to an anti-derailment system to prevent train derailment due to axle failure resulting from journal bearing overheating. It includes a thermal sensor to continuously monitor the temperature of the bearing and to activate the brake system when the temperature exceeds a predetermined level. A thermally-responsive element located in the journal bearing adapter physically deforms to activate a power source. The resulting signal initiates an electroexplosive brake line venting mechanism, puncturing and venting the brake line to stop the train. Several configurations of the thermal sensor and the power source are possible.

Descriptors :   *Railroad cars, *Derailment, *Journal bearings, *Patents, Axle shafts, Failure(Mechanics), Temperature sensitive elements, Braking, Detectors, Monitors

Subject Categories : Surface Transportation and Equipment
      Safety Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE