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US 4,994,309 AGranted
Insulating multiple layer sealed units and insulating
AssigneeLauren Manufacturing Company
InventorsGerhard Reichert, Michael Glover
Life of this patent
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AssigneeLauren Manufacturing Company
InventorsGerhard Reichert, Michael Glover
Estimating the term…
There is described a multiple layer sealed glazing unit comprising two or more glazing layers arranged in a parallel spaced apart relation, with an insulating spacer made of oriented thermoplastic polymer material interposed between the separate glazing layers and adjacent to the periphery thereof. The required physical properties of the insulating spacer are substantially governed by controlling the degree and directions or orientation of the molecular structure of the thermoplastic material or materials from which it is formed. Typically, the orientation of the polymer material used to manufacture the insulating spacer is largely in the longitudinal axis of the spacer. There is also described an insulating spacer for multiple layer sealed units. The spacer is formed from oriented thermoplastic polymeric material and among other physical properties of which, the thermal conductivity, coefficient of thermal expansion and dead bend properties are governed by controlling the degree and directions of orientation of the molecular structure of the material.
An insulating spacer for interposition between at least first and second glazing layers of a multiple-pane sealed unit, which spacer is of a high draw ratio oriented thermoplastic polymeric material which is more highly molecularly oriented in the direction of the length thereof and which is free of reinforcing fibers, said material having a lower thermal conductivity in the direction between said first and second glazing layers than a material which does not have such a high draw ratio, being sufficiently highly drawn for having a coefficient of thermal expansion in the direction of the length of said spacer which substantially matches the thermal coefficient of expansion of said glazing layers, having dead-bend properties, having stiffness and rigidity sufficient to make a frame around the sealed unit self supporting, having ultra-violet resistance, and having moisture vapor and gas permeability less than said material which does not have such a high draw ratio.
A multilayered glazing unit comprising an insulating spacer interpositioned between at least first and second glazing layers, which spacer is of a high draw ratio oriented thermoplastic polymeric material which is more highly molecularly oriented in the direction of the length thereof and which is free of reinforcing fibers, said material having a lower thermal conductivity in the direction between said first and second glazing layers than a material which does not have such a high draw ratio, being sufficiently highly drawn for having a coefficient of the thermal expansion in the direction of the length of said spacer which substantially matches the thermal coefficient of expansion of said glazing layers, having dead-bend properties, having stiffness and rigidity sufficient to making a frame around the sealed unit self supporting, having ultra-violet resistance, and having moisture vapor and gas permeability less than said material which does not have such a high draw ratio.
Dependencies are inferred from the claim text.