LOCAL DERAILMENT SENSOR AND BRAKE ACTUATOR SYSTEM

The patent application describes a motion sensor combined with a journal bearing thermal detector which produces an output signal utilized 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.

• Supplemental Notes:
  • Government-owned invention available for licensing. Copy of application available NTIS.
• Corporate Authors:

  Department of the Navy

  Constitution Avenue and 18th Street, NW
  Washington, DC  United States 
• Authors:
  • Armstrong, J H
  • Wassman, W W
• Publication Date: 1974-8-7

Media Info

• Pagination: 19 p.

Subject/Index Terms

• TRT Terms: Actuators; Braking; Chemical activation; Derailments; Detectors; Hot box detectors; Journal bearings; Journal boxes; Motion; Patents; Railroad cars; Safety; Sensors; Temperature measuring instruments; Vehicle design; Warning systems; Wheels
• Old TRIS Terms: Activation; Car design; Temperature warning systems
• Subject Areas: Design; Railroads; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00093771
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: PAT-APPL-495-480 Patent
• Files: TRIS
• Created Date: Feb 4 1976 12:00AM