Multiple pane insulating glass unit with insulating spacer
AssigneeCardinal IG Company
InventorJames E. Larsen
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Abstract
An insulating glass unit is shown comprising a pair of generally parallel, spaced-apart glass panes and a spacer peripherally joining the glass panes to each other. The spacer is a tubular structure, and may include a particulate desiccant filling at least a section of the interior and conforming to the interior configuration thereof to contribute compressive strength to the spacer. The spacer desirably is made from stainless steel sheeting having a thickness not greater than about 0.005 inches. In a preferred embodiment, the spacer includes side walls sealed to the glass panes and an outer wall extending between the side walls and having a sealant free portion between the side walls that extends substantially completely about the periphery of the glass unit.
Claims7
An insulating glass unit comprising a pair of generally parallel, spaced-apart glass panes having confronting inner surfaces, and a spacer joining peripheral portions of the glass panes to each other and extending about the periphery of the glass unit, the panes and the spacer defining between them a gas-containing interpane space, the spacer being formed of stainless steel having a uniform wall thickness of not greater khan about 0.005 inches, the spacer having a hollow interior and opposed, generally flat side walls each including a portion extending inwardly of the interpane space along the pane surface to which it is sealed and a doubled back portion, an interior wall extending between the doubled back side wall portions and facing the interpane space, the interior wall having elongated portions thereof extending convergently from the respective side walls and having mutually overlapping edge portions joined together at points along their length to rigidly join the elongated portions and to define a plurality of openings between the overlapping edges communicating the interior of the spacer with the interpane space.
Dependencies are inferred from the claim text.