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Flame detector and protective cover with wide spectrum characteristics

  • US 5,773,826 A
  • Filed: 03/01/1996
  • Issued: 06/30/1998
  • Est. Priority Date: 03/01/1996
  • Status: Expired due to Term
First Claim
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1. A protective cover for use with a flame detector disposed within a housing having a viewing window, said flame detector with sensitivity for a visible band, near band infrared, and a wide infrared spectrums, said protective cover for preventing accumulation of paint, grime or the like on the viewing window, comprising:

  • a one-piece configuration shaped to completely surround said viewing window, said one-piece configuration having wide spectrum transmittance characteristics that transmit radiant energy in said visible band, said near band, and said wide infrared spectrums to which said flame detector is sensitive.

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