De-misting system for multi-pane glazing
First Claim
1. A multi-pane glazing unit having at least two glazing panels in mutually spaced substantially parallel relation;
- a peripheral seal in substantial sealing relation about the periphery of said panels;
to form an enclosed cavity therewith;
at least one access aperture connecting said cavity to atmosphere; and
plug means removably inserted in said access aperture, to provide access to said cavity.
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Accused Products
Abstract
Multi-pane glazing units have their internal cavity vented to atmosphere by way of one or more venting apertures that are plugged by porous ‘breathing’ plugs of predetermined permeativity, to permit controlled equalization of cavity pressure with the atmosphere. The provision of two such apertures permits the admission of a flow of demoisturizing air or other gas, to de-mist the glazing unit. The plugs permit the outward transfer of moisture from the unit cavity, and may control the rate of cavity pressure change. The outer glazing pane may be thicker than the inner pane, to better withstand wind gusts. The venting apertures may be through the glass or the unit peripheral seal.
4 Citations
20 Claims
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1. A multi-pane glazing unit having at least two glazing panels in mutually spaced substantially parallel relation;
- a peripheral seal in substantial sealing relation about the periphery of said panels;
to form an enclosed cavity therewith;
at least one access aperture connecting said cavity to atmosphere; and
plug means removably inserted in said access aperture, to provide access to said cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- a peripheral seal in substantial sealing relation about the periphery of said panels;
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16. The method of controlling pressure and humidity conditions within the cavity of a multi-pane glazing unit, comprising the steps:
- forming at least one atmospheric access aperture to said glazing pane cavity, to connect said cavity with atmosphere, and plugging said access aperture with a plug of predetermined permeativity, made of material selected from the group consisting of Polycarbonate, polypropylene, polyethylene, ceramics, powdered metals, and polymerized polyolefin material, to facilitate the egress of water vapour from said cavity, and to substantially maintain atmospheric pressure within said cavity.
- View Dependent Claims (17, 18, 19, 20)
Specification