Accession Number : ADD004840

Title :   Thermal Sensor and Current Generator.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

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

Report Date : 14 Jun 1977

Pagination or Media Count : 8

Abstract : In a system to prevent train derailment due to axle failure resulting from journal bearing overheating, a thermal sensor continuously monitors the temperature of the bearing and activates the brake system when the temperature exceeds a predetermined level. A thermally-responsive element located in the journal bearing housing physically deforms to activate a power source. The resulting signal initiates an electro-explosive brake line venting mechanism, which punctures and vents brake line to stop the train. Several configurations of the thermal sensor and the power source are possible. (Author)

Descriptors :   *Patents, *Temperature warning systems, *Temperature sensitive elements, Railroad cars, Journal bearings, Generators, Electric current

Subject Categories : Surface Transportation and Equipment
      Machinery and Tools
      Safety Engineering
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE