×

Device for detecting excessively heated wheel bearings and/or wheel tires

  • US 4,878,761 A
  • Filed: 10/16/1987
  • Issued: 11/07/1989
  • Est. Priority Date: 10/17/1986
  • Status: Expired due to Term
First Claim
Patent Images

1. A system for measuring the temperature of and detecting excessively heated wheel bearings and/or wheel tires of rail vehicles running on a track at a measuring point within a fixed field of vision wherein the system is stationarily arranged in the vicinity of the track and the position of the measuring point varies in a random manner over the length of the bearing along a known axis within a fixed field of vision, comprising:

  • heat sensing means for detecting infrared radiation and measuring the temperature of the wheel bearings;

    infrared object lens means for scanning infrared radiation emitted from the measuring point and to produce an image thereof;

    infrared focusing lens means for focusing scanned infrared radiation onto said heat sensing means; and

    afocal anamorphotic cylinder lens means for anamorphotically scanning the image produced by said infrared object lens means and for focusing the image into a beam having a substantially circular symmetrical shape on said infrared focusing lens means, wherein said afocal anamorphotic cylinder lens means widens the image in one axial direction to extend narrowly across an area at least equal to the fixed field of vision within which the position of the measuring point vaires

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×