Patent ID: 7891153
Filing Date: 2011-02-22
Classification: A47F,E06B

Abstract:
1. A refrigeration door adapted for use in a refrigerating compartment, said door comprising: an inner sheet of glass including a first surface and a second surface, said first surface of said inner sheet being disposed adjacent the interior of the refrigerating compartment; an outer sheet of glass including a first surface and a second surface, said first surface of said outer sheet being disposed adjacent the exterior environment of the refrigerating compartment; a middle sheet of glass disposed between said inner and outer sheets of glass; a first sealant assembly disposed around the periphery of said inner sheet of glass and said middle sheet of glass for maintaining said inner sheet and said middle sheet in spaced-apart relationship from each other; a second sealant assembly disposed around the periphery of said middle sheet of glass and said outer sheet of glass for maintaining said middle sheet and said outer sheet in spaced-apart relationship from each other; a first low emissivity coating adjacent the second surface of said inner sheet of glass; a second low emissivity coating adjacent the second surface of said outer sheet of glass; said inner sheet, outer sheet, middle sheet, first sealant assembly, second sealant assembly, and said first and second low emissivity coatings forming an insulating glass unit having a U value substantially equal to or less than 0.2 BTU/hr-sq ft-F substantially preventing the formation of condensation on said first surface of said outer sheet of glass without the application of electricity for heating said first surface of said outer sheet of glass; and a frame secured around the periphery of said insulating glass unit.