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Insulating units

  • US 5,819,499 A
  • Filed: 12/11/1995
  • Issued: 10/13/1998
  • Est. Priority Date: 08/26/1992
  • Status: Expired due to Fees
First Claim
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1. A sealed insulation unit comprising two parallel opposed panes with a spacing and sealing system therebetween, the spacing and sealing system and panes defining a sealed gas spaced, said spacing and sealing system comprising:

  • a spacer frame comprising an elongate hollow metal member having opposed outer and inner walls connected together by two opposed sides walls, the side walls each defining therein an elongate recess having a section in the form of a trapezium,a primary seal interposed between each side wall of the spacer frame and the opposing pane, anda secondary seal extending between the panes outside the outer peripheral face of the spacer frame,wherein each primary seal is greater than 0.4 mm thick on construction of the unit and comprises at least 7 grams of sealant material on each side of the spacer frame per meter of the spacer frame length.

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