Static structures (e.g. – buildings) – Viewing port for specific environment
Patent
1974-09-03
1976-11-09
Davis, Jr., Albert W.
Static structures (e.g., buildings)
Viewing port for specific environment
52616, 165 96, B61D 1712
Patent
active
039902013
ABSTRACT:
An evacuated dual pane window structure is provided for reducing heat loss through the window structure. The window structure comprises a pair of closely spaced panes of glass having a spacing of less than 0.25 inch with a spacer means positioned between and uniformly spaced in the area between the panes, and sealing means such as an O-ring positioned around the perimeter and between the panes of glass. A vacuum pump may be provided for evacuating the area between the panes of glass for reducing thermal losses through the window structure. Reflective coatings may be provided on the inside surfaces of the glass. A plurality of windows of the above structure may be connected by manifold piping to a single vacuum pump which is actuated by a thermostat when a preset temperature differential exists between the outside and the inside of the building where the windows are used. In an alternate embodiment of low-emissivity layer of polyester film is provided with a reflective coating and mounted between the panes of glass and the spacers positioned therebetween.
REFERENCES:
patent: 2216332 (1940-10-01), Wahl
patent: 3167159 (1965-01-01), Bovenkerk
patent: 3270802 (1966-09-01), Lindberg
patent: 3710074 (1973-01-01), Stewart
Davis Jr. Albert W.
Levinson Joseph
Liles James D.
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