Spacer-frame bar having integral thermal break

Details Spacer-frame bar having integral thermal break Spacer-frame bar having integral thermal break

1995-05-17

1996-10-29

Canfield, Robert

Static structures (e.g., buildings)

Composite prefabricated panel including adjunctive means

Sandwich or hollow with sheet-like facing members

527304, 52172, 5271702, E06B 700

Patent

active

055687148

ABSTRACT:
An elongate tubular spacer-frame bar (18) having an integral thermal break for reducing energy flow between glass panes (14) in an insulated glass panel (10) is provided. The spacer-frame bar (18) includes a first and a second side (24, 25), each side having elongated edges (28, 29). Two nonwelded seams (26) run along the elongate dimension of the spacer-frame bar between the corresponding adjacent edges of the first and second sides. At least one continuous insulating member (30), composed of a nonmetallic, low-heat-conductive substance, and being of a length substantially equal to the length of the spacer-frame bar, separates the first and second sides of each seam, forming a thermal break. The present invention effectively eliminates all direct contact between the spacer-frame bars and the glass panes by separating the two halves of the spacer-frame bar along its nonwelded seams with a nonmetallic
onconductive substance. This separation creates an effective thermal break along the spacer-frame bar that stops conductivity between the glass panes via the spacer-frame bar, thus further reducing the heat loss in insulated glass panels.

REFERENCES:
patent: 3823524 (1974-07-01), Weinstein
patent: 4057945 (1977-11-01), Kessler
patent: 4222213 (1980-09-01), Kessler
patent: 4312905 (1982-01-01), Kreusel
patent: 4342144 (1982-08-01), Doguchi
patent: 4688366 (1987-08-01), Schmidt
patent: 5087489 (1992-02-01), Lingemann
patent: 5313762 (1994-05-01), Guillemet
patent: 5424111 (1995-06-01), Farbstein

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