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Method for preparing a heater glazing for a refrigerated display case

  • US 5,449,885 A
  • Filed: 08/23/1994
  • Issued: 09/12/1995
  • Est. Priority Date: 03/05/1991
  • Status: Expired due to Fees
First Claim
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1. A method of preventing moisture condensation on the display single glazing of a refrigerated display case, comprising:

  • providing at least a portion of the inside surface of the display glazing with a low emissivity conductive coating and conductive strips for current input placed in a vertical plane and being shorter than the dimension of the glazing and the low emissivity conductive coating in their vertical plane in contact with the coating which define at least one heating zone;

    applying electrical current to the conductive strips to generate heat by the Joule effect in the coating bounded by the conductive strips if atmospheric conditions are such that moisture condensation is likely to occur on the glazing, andwherein the low-emissivity coating is interrupted by an insulating strip between the part of the surface of the single glazing which is subjected to heating by the Joule effect and the remainder of the surface along a line which joins the ends of the current input strips.

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