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Display type refrigerator/freezer cabinet

  • US 4,477,129 A
  • Filed: 06/18/1982
  • Issued: 10/16/1984
  • Est. Priority Date: 09/15/1980
  • Status: Expired
First Claim
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1. In a display type refrigerated cabinet having a transparent viewing area comprising a cabinet body for installation inside a building and for containing merchandise required to be kept at least colder than the ambient temperature in the region surrounding the cabinet, apparatus for maintaining the temperature in the region inside the cabinet at least colder than the ambient temperature region surrounding the cabinet and including transparent pane structure for viewing the contents inside the cabinet, the improvement wherein at least some of the transparent pane structure is a single pane having one surface directly exposed in use to the warmer ambient region outside the cabinet, and an opposed surface in use facing the colder region inside the cabinet, and having an infrared reflecting visible light transmitting coating applied to the surface facing the colder region for reflecting a substantial portion of infrared radiation incident on said coating from the warmer region, so as to restrict substantial transmission of infrared radiation from the warmer region to the colder region and so as to heat the surface of the pane exposed in use to the warmer region sufficiently to prevent formation of a visibility-impeding layer thereon by reradiation of the reflected infrared radiation back through the pane toward the warm region and for transmitting a substantial portion of visible light radiation incident on said coating, to enable substantially clear visibility therethrough.

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