Railroad hot box detector

  • US 4,659,043 A
  • Filed: 05/14/1984
  • Issued: 04/21/1987
  • Est. Priority Date: 10/05/1981
  • Status: Expired due to Fees
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First Claim
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1. A railroad car hot box detector system comprising:

  • (a) radiant energy scanner means positioned along a section of track and adapted to scan, in a single direction along said section, surfaces associated with successively passing bearings on different axles on the same side of railroad cars passing the scanner means in either direction and to generate a signal in response to each bearing scanned;

    (b) means for determining a direction of movement of said railroad cars;

    (c) means for determining if the surfaces of the bearings being scanned dissipate heat generated by said bearings differently from bearing to bearing to distinguish (i) between bearings that are housed and bearings that are exposed and (ii) if the former, (a) if the surfaces of the bearings being scanned are housing inner or outer surfaces and (b) if the surfaces of the bearing being scanned are housing leading or housing lagging surfaces as defined by the direction of movement of the railroad cars;

    (d) means for processing said scanner signal; and

    (e) means for adjusting said scanner signal processing means as a function of the heat dissipating qualities of the surface of said bearing being scanned.

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