Accession Number : ADD002408
Title : Local Derailment Sensor and Brake Actuator System.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Armstrong,John H ; Wassmann,William W
Report Date : 30 Dec 1975
Pagination or Media Count : 9
Abstract : The patent relates to a motion sensor combined with a journal bearing thermal detector which produces an output signal used to activate a train's brake system upon detection of a local wheel derailment or excessive bearing temperatures. Wheel impact with the roadbed and/or bearing temperatures exceeding a predetermined value causes the sensor to activate a percussion-initiated power source. The output signal triggers an electroexplosive brake venting mechanism, puncturing and venting the brake line for a full service brake application to stop the train.
Descriptors : *Railroad cars, *Derailment, *Journal bearings, *Patents, Axle shafts, Failure(Mechanics), Temperature sensitive elements, Braking, Detectors, Monitors
Subject Categories : Surface Transportation and Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE