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

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