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US 4,542,611 AGranted
Double glass sheet insulating windows
OwnerRalph K. Dayinventor
Life of this patent
Estimating the term…
Abstract
A window structure includes a pair of panes of glass maintained in spaced apart relationship by a separating unit to define an interior chamber between the panes substantially impervious to the ambient atmosphere. The separating unit includes a pressure equalization device for controlling the volume of the chamber to maintain the interior chamber pressure substantially equal to the ambient atmospheric pressure. The separating unit can also include a desiccant-filled container in fluid communication with the chamber for dehydrating air within the chamber.
Claims7
A multiple pane window structure comprising:
- a pair of spaced apart panes of glass having an outer periphery defined by the outer marginal edges of said panes;
- separating means between the facing surfaces of said panes for maintaining said panes in generally fixed, parallel, spaced apart relationship;
- sealing means substantially impervious to the ambient atmosphere extending between and sealed to the spaced apart panes to define a chamber between said panes, said sealing means including pressure equalization means disposed inwardly of the marginal edges of said panes between the facing surfaces of said panes, said pressure equalization means being responsive to the ambient atmospheric pressure for altering the volume of said chamber to maintain the interior chamber pressure substantially equal to the ambient atmospheric pressure.
Dependencies are inferred from the claim text.