Patent ID: 11859439
Assignee: VITRO FLAT GLASS LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 13:
14. A method of preparing an insulating glazing unit, comprising affixing a spacer between a first glazing panel and a second glazing panel, the spacer comprising:
a single metal sheet formed into a structure comprising:
an elongate corrugated portion comprising two or more longitudinal ridges;
a first elongate lateral wall, having a major planar portion and extending from a first major edge of the corrugated portion;
a second lateral elongate wall, having a major planar portion and extending from a second major edge of the corrugated portion in the same direction as the first elongate wall;
a first lip extending from the first elongate lateral wall opposite the corrugated portion and extending towards the second elongate lateral wall; and
a second lip extending from the second elongate lateral wall opposite the corrugated portion and extending towards the first elongate lateral wall, wherein a combined length of the first lip and the second lip is less than a length of the elongate corrugated portion so as to define a gap between the first lip and the second lip, and wherein the first lip and the second lip define a maximum height of the spacer;
the corrugated portion comprising two or more longitudinal ridges, with a first lateral valley portion between and connecting the first elongate lateral wall and an adjacent ridge and defining a first lateral valley, a second lateral valley portion between and connecting the second elongate lateral wall and an adjacent ridge and defining a second lateral valley, and one or more central valley portions between and connecting adjacent longitudinal ridges and defining one or more central valleys, each ridge comprising a plurality of walls, with peak portions connecting adjacent walls,
the method further comprising affixing the spacer with an adhesive to marginal portions of a major surface of the first panel and the second panel, and holding the first and second panels in a spaced-apart configuration, thereby defining a compartment, wherein the insulating glazing unit has a Res-value of at least 175 (in-hr-° F.)/BTU.