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Publication numberUS2340469 A
Publication typeGrant
Publication dateFeb 1, 1944
Filing dateMay 28, 1941
Priority dateMay 28, 1941
Publication numberUS 2340469 A, US 2340469A, US-A-2340469, US2340469 A, US2340469A
InventorsHall Frank W
Original AssigneePittsburgh Plate Glass Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Glazing unit
US 2340469 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Feb. 1,' 1944.

F. w. HALL GLAZING mm Filed lay 28, 1941 k W m F,

Patented Feb. 1, 1944 burgh Plate Glass Company,

Allegheny County.

Pa, a corporation of Pennsylvania Application May 28, 1941, Serial No. 395,544

The present invention relates to a multiple paned insulating construction and more particularly to a glazing unit provided with a sealed insulating chambe 4 One object of the invention is to provide a glazing unit having improved spacing and sealing means which will materially prolong the effective life of the unit.

Other obiects and advantages of the invention will become more apparent from the following detailed description of certain preferred embodiments thereof, when taken in conjunction with the accompanying drawing.

In the drawing,

Figure 1 is an elevational view of a glazing unit embodying the principles of my invention;

Figure 2 is a fragmentary vertical sectional view thereof;

Figure 3 is a fragmentary vertical sectional view of another form of the invention;

Figure 4 is a fragmentary vertical sectional view of still another form of the invention.

Referring to the drawing, a glazing unit 1 com prises a plurality of glass plates 3 disposed in parallel relation and maintained therein by a spacer 4 interposed between the plates and adhered thereto marginally. A vapor barrier 6 is secured to the inner surface of the spacer 4 and extends across the space between the glass plates. A frame 8 substantially of U-shape in crosssection surrounds the unit i and completes the assembly thereof.

As shown in Figure 3, the spacer 4 may be rendered impervious by the installation of a vapor barrier l0 within the body of the spacer. Another form of the invention, illustrated in Figure 4; contemplates the use of a second vapor barrier l2 secured to the outer surface of the spacer 4 increasing the measure of protection aflorded by the barrier Bsecured to the inner surface of the spacer. p Y

The novel feature of the invention resides in the combination of the vapor barrier and spacer. l-leretofore attempts to use. thermoplastic materials as the spacers of multiple glazed units have been subiect to certain deficiencies inasmuch as these materials are relatively permeable to water vapor. The thermoplastic resins. polyvinyl acetals, acrylates and the like, may be admixed with suitable plasticizers and made to adhere directly to glass. Obviously, therefore, this characteristic of the resins could be used to great advantage in manufacturing multiple glazed units, were it onlypossibletorenderthcresinsimperviousto part of the spacer, the desired results are accomplished.

The vapor barrier is preferably a continuous strip of metal foil, copper, aluminum, lead and the like being suitable for the purpose, although the use of other metals and alloys is possible.

The metal foil may be secured to the surfaces of the spacer material as a facing extending the full width of the spacer. To increase the eifectlveness of the barrier, the end of the facing overlap theedges of the spacer. In this respect care must be taken that suflicient of the spacer is left uncovered to enable a proper bond thereof with the glass plates. If it is desired a strip of metal foil may be incorporated within the body i of the spacer (Figure 3), extending across its full width, during the formation of the thermoplastic material lnto the spacer. Excellent results have been obtained through the use of polyvinyl acetal resins as the spacer material. These resins exhibit strong adhesion to both the glass plates andthe' metal foil even when only slightly plasticized. Other thermoplastic resins may be used, however, and if desired, fillers or reinforcing agents may be added to increase their strength.

Generally a frame is added to the unit although this is not necessary in all cases. For example, a unit of the type illustrated in Figure 4 does not require a. full frame and spaced clips could be used as a substitute therefor.

It will at once be obvious that Various modiflcations in thenature ofthe several elements and their arrangement are possible without departing from the spirit of the invention or the scope of the appended claim.

What I claim is:

Amultiple glazed unit comprising adjacent glass plates disposed in parallel, face-to-face relation, a spacer ofthermoplastic resinous material disposed between and bonded to adjacent plates around the marginal portions thereof serving as the sole means to hold the plates in spaced relation, and pliable metal foil traversing, the space from plate to plate continuously around the marginal portions thereof and integrally bonded to the body of the spacer on both the inside and outside surfaces thereof to form a vapor barrier against the penetration of moisture m ntal-e. Bymakingavaporbarrieraaintesrsl into the space between the plates, said foil having inwardly turned marginal portions lying flat against the opposed surfaces of the p ]RANK WQHALL,

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4015394 *Oct 14, 1975Apr 5, 1977Gerald KesslerDouble-insulated glass window with insulating spacer
US4109432 *Jan 13, 1976Aug 29, 1978Reiner PilzMultipane insulating glass process and rim strip
US4486990 *Apr 21, 1982Dec 11, 1984Bauch Tamil DRemovable window insulation system
US4831799 *Nov 5, 1987May 23, 1989Michael GloverMultiple layer insulated glazing units
US5260112 *Aug 9, 1991Nov 9, 1993Geilinger AgCompound glass element
US6606832Jun 9, 2001Aug 19, 2003Anthony, Inc.Apparatus and methods of forming a display case door and frame
US20060048468 *Oct 15, 2003Mar 9, 2006Saint-Gobain Glass FranceInsulating glazing
DE971991C *Oct 30, 1951May 6, 1959Saint GobainVerglasung
EP0127739A2 *Mar 21, 1984Dec 12, 1984Josef Gartner & Co.Spacing element and method of producing the same
EP0261923A2 *Sep 22, 1987Mar 30, 1988Lauren Manufacturing Comp.Multiple pane sealed glazing unit
EP0470373A1 *Jul 6, 1991Feb 12, 1992Geilinger AGMultiple glass unit
WO1997049887A1 *Jun 26, 1997Dec 31, 1997Flachglas AktiengesellschaftInsulating glass unit
U.S. Classification52/309.3, 52/786.13, 52/204.593, 52/408
International ClassificationE06B3/66, E06B3/663
Cooperative ClassificationE06B2003/6638, E06B3/66328
European ClassificationE06B3/663B5