Static structures (e.g. – buildings) – Composite prefabricated panel including adjunctive means – Sandwich or hollow with sheet-like facing members
Patent
1994-09-12
1996-07-09
Friedman, Carl D.
Static structures (e.g., buildings)
Composite prefabricated panel including adjunctive means
Sandwich or hollow with sheet-like facing members
527901, 156109, E04C 254
Patent
active
055333141
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a frameless insulating glazing unit comprising at least two panes arranged in parallelism to each other and connected together by a marginally surrounding spacer and to a method for the production thereof.
For a very long time the glazing elements of window lights (i.e. the movable parts of windows) have always been designed with frames containing them and endowing the glass panes with rigidity as a sheet and furthermore protecting the edge of the fragile glass material. The window framing means consisting of wood, plastic or aluminum mouldings serve more particularly to receive the functional fittings and owing to their stiffness and special cross section render possible a reliable sealing action against the outer stationary frame let into the masonry.
A departure from this traditional system to have a frameless window light glazing system leads to a substantial gain of transparent area although the windows still occupy the same proportion of the wall. Dependent on the width of the window light frame it is possible, but not having the opaque supporting frame, a gain in the free area available for the passage of light and solar radiation of 20% to 40%.
A particular advantage for building practice is to be seen in the rational nature of frameless window glazing units. In this respect one may simply call to mind the need for materials such as wood, plastic and aluminum for the production of window light frames, the attention they require, and furthermore their limited resistance to aging and last but not least recycling problems in connection therewith. In this respect it is furthermore to be taken into account that every increase in frame size necessitates additional measures in order to comply with the requirements as regards the frame. For instance for aluminum sash frames, which have an area above approximately 1 square meter, steel reinforcement is required.
Since furthermore at present with state of the art insulating glass technology the thermal insulating coefficients of the pane elements are better than those of the frame system, the supporting frame as a rule leads to a global increase in the transition of heat through the window light.
Designs of frameless window lights suitable for use of the type in which the glass element without a frame constitutes the window light, have, despite the above mentioned advantages, not found application in building practice so far. An explanation for this is to be seen in the fact that in the case of windows it is a question of components of the surface surrounding the building, which are affected by winds and other effects of the weather and consequently to this extent require a high quality sealing and closing system, which so far has only been assured by a flexurally rigid frame design bearing the pane element.
A further inconvenient factor is that at the present time frameless designs have to be on the basis of double-pane insulating glass windows, since insulating panes have become the standard for window glazing systems in building practice.
Insulating glazing units are characterized by their double pane structure. The two glass panes, each with a thickness of 3 to 6 mm dependent on the size of the area, enclose an intermediate space, filled with air or a rare gas, having a width of 12 to 16 mm which is set and sealed off at the surrounding edge of the panes with a hollow aluminum rib or using a suitable rib of an elastic or plastic synthetic resin material.
The rib defining the distance has a double function: On the one hand it serves as an adhesive bond for mechanically connecting the panes together and on the other hand it seals off the intermediate space between the panes in a diffusion-proof fashion.
An adhesive bond, even if produced using a dimensionally stiff intermediate rib, is however not suitable for stiffening the panes to give a mechanically rigid, self-supporting pane or sheet member. Owing to the weight of the panes as such it is unable to withstand the shear forces. Even for this reason such a pane unit must be mount
REFERENCES:
patent: 4831799 (1989-05-01), Glover et al.
patent: 5007217 (1991-04-01), Glover et al.
patent: 5079054 (1992-01-01), Davies
patent: 5087489 (1992-02-01), Lingemann
patent: 5139850 (1992-08-01), Clarke et al.
Brackett Jr. Tim L.
Edwards W. Glenn
Ferguson Jr. Gerald J.
Friedman Carl D.
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