AU779180B2

AU779180B2 - Internal glazing seal

Info

Publication number: AU779180B2
Application number: AU30109/00A
Authority: AU
Inventors: Sean Francis O'sullivan
Original assignee: Fletcher Building Holdings Ltd
Current assignee: Fletcher Building Holdings Ltd
Priority date: 1999-04-28
Filing date: 2000-04-27
Publication date: 2005-01-13
Anticipated expiration: 2020-04-27
Also published as: NZ335465A; AU3010900A

Description

12-NOU-2004 16:31 j 493693 .0 A i PAW S4 9 3096943 P. P= 0

-I-

Regulaion 3.2

AUSTRALIA

PATENTS ACT, 1990 COMPLETE

SPECIFICATION

FOR A STANDARD

PATENT

ORIGINAL

Nanae of Applicant: uxft Actual Inventor: SEAN FRANCIS

O'SULLIVAJN

in Australia: Invention Title: A J PARK, Level 11, 60 Marcus Clarke Street, Canberra ACT 2601 Internal Glazing Sea] The following Statement is a Wul description of this invention, including the bewt method Of pufrtmning it known to mefwt COMS ID No: SBMI-00994937 Received by IP Australia: Time 14:34 Date 2004-11-12 12-NOU-2004 16:31 A i PPR< 12-OU200 1:3 P P~(64 9 3096943 P.@6tr -2- The present invention relates to internal seals, eg; glazing seals, door flame seals or window sash seals.

It is common in window assemblies formed from extruded members to glaze peripheral enclosures sashes or fr-ames) using a glazing panel which is held by appropriate means against a flexible seal. Such flexible seals can take many different formis and one such form is that referred to as a "backing rubber".

Similarly, sealing requirements arise with door frames (eg; to seal onto door panels) and with window fr-ames (to seal on window sashes).

The present invention is directed to features which lend themselves to the provision (eg; in a glazing system or on at door frame or on a window sash) of a backing rubber or some other flexible sealing fitment where there is a better prospect of a reduced unsightly visibility thereof.

The present invention recognises an advantage of being able to use, if desired, a backing rubber or appropriate other seal which is symmetric in form. For example, better sealing characteristics are believed possible with symmetric twin flanged forms of backing rubber over a similar form where one flange is wider than the other. Such a symmetric backing rubber form (not niecessarily natural rubber but of *any appropriate material) is that depicted in Figure 1 which shows a typical arrangement of a backing rubber which is visible from the glazing bead side of the *(in thscs)window frame. Similar considerations arise with other extruded a members in a window or door system such as a mullion. The present invention (beyond even door frames and window sashes) even has application in glazed balustrading assemblies.

The present invention recognises the ability to utilise if desired symmetric flexible seal forms (whether a backing rubber or another type seal, iLe; with or *****without the preferred symmetric flanges of a backing rubber) reliant upon asymmetric lip forms in the supporting extrusion.

In a first aspect the present invention consists in, in an extrusion to locate a flexible sealing strip (eg; a "backing rubber") [eg; for a glazed or to be glazed assembly or for sealing onto a door panel or a window sash], said extrusion having a COMS ID No: SBMI-00994937 Received by IP Australia: Time 14:34 Date 2004-11-12 12-NOU-2004 16:32 A i PAW 12-OU-0041632 j p ~64 9 3096943 P.07? -3channel having a lip constricted strip locating mouth the Opening of which is asymmetrically Positioned to displace a said flexible sealing strip more to one side of the channel axis thereby in use, to allow said extrusion to obscure a fitted such flexible sealing strip when said extrusion is viewed from a side opposite that to which said channel opens.

In a further aspect the present invention consists in a glazing or sealing extrusion to locate a flexible glazing or sealing strip for a glazing paneJ, door panel.

or window sash, the provision of a flexible glazing or scaling strip retention channel to open towards a surface of said glazing panel, door panel or window sash to be positioned, said channel being at least partly closed (ie; constricted) at its mouth by a by a pair of inwardly directed integral protrusions (hereafter "lips"), with that lip (the "distal lip') to, in use, be positioned more from the edge of a glazing panel, door panel or window sash, to be positioned against said flexible glazing or sealing strip to be fitted providing by a greater inward directed intrusion a more constricting lip than the other lip (ie; thereby to encourage a non symmetric location of a flexible glazing or sealing strip in said channel) to thereby allow the obscuring from view, in use, of the flexible glazing or sealing strip.

*9S9 Preferably the form of the channel and its lips is substantially hereinafter described with reference to any one of Figures 2 to Preferably said glazing or sealing extrusion may be that to provide a mullion, .9 9.a window frame, a hinged door nil, a hinged door stile, a door frame and a sash for awning windows. It may also be a balustrade component.

In a further aspect the present invention consists in a mullion, a window frame, a hinged door rail, a hinged door stile, a door frame or a sash for an 9 9 awning window which includes a glazing or sealing extrusion with asymmetry as herein described with reference to any one of Figures 2 to S.

9 99 An assembly of apparatus of claim 5 and a flexible glazing or sealing strip 9 9 located in the channel of said extrusion.

In another aspect the invention consists in an assembly comprising or including extrusion having a channel locating a flexible glazing or sealing strip, a COMS ID Na: SMI-00994937 Received by IP Australia: Time 14:34 Date 2004-1 1-12 12-NOU-2004 16:32 A J PARK 12-IJU200 1632 j na<64 9 3096943 P.08 -4member having a surface against said strop and means to hold said extrusion, said strip and said member in that relationship wherein said extrusion by virtue of an asymmnetric opening of channel allows the strip to be obscured from view from the extrusion side thereof that would have been the case had the channel had a symmetric opening.

Preferably the arrangement is typified by those hereinafter described, In still other a further aspect the present invention consists in a method of miimjiig the visibility Of. 2exibl glazing or sealing strip (such as a backing rubber) which comprises or includes locating such a glazing or sealing strip in a location channel of an extrusion therefor, such channel having asymmetric inwardly intruding lips with one lip having a greater inward intrusion so as to be able to set in the flexible glazing or sealing strip mare from a distal extremity of the extrusion.

As used herein throughout the tern "sealing strip" may include one or both flexible seating strips and brushlike mohair) sealing strips.

Preferably in glazed assemblies of the invention a glazing bead rises sufficiently high (or inwardly) on the glazing panel on the exterior of the building envelope so as to obscure substantially from visibility the flexible glazing strip through the glazing panel.

The present invention also relates to any of the methods of assembly.

Preferred form of the present invention will now be described with reference to the accompanying drawings in which; S Figure I is a view of a typical prior art type arrangement where, from outside of the building envelope, there is the prospect of about 3 nun of a symmetric backing rubber being visible as well as providing some visibility from inside the building envelope, le; from the left Figure 2 is a similar arrangement to that of Figure 1, but using an extrusion in accordance with the present invention, showing a similar backing rubber to that 0* shown in Figure 1 better obscured from visibility from outside of the building envelope by being preferably matched with the height of the glazing bead 4 (in this instance a window fr-ame), the glazing rubber being obscured largely from view from COMS ID No: SBMI-00994937 Received by IP Australia: Time 14:34 Date 2004-11-12 12-NOU-2004 16:32 A J PARK 12-NJU-02416~2 p3 P1~(64 9 3096943 P.09 inside the building envelope by virtue of the set back towards the periphery of the glazing panel of the backing rubber by virtue of the asymmetric lip form of the backing rubber location groove, Figure 3 shows a preferred form of the backing rubber location groove with the preferably curved wings or flanges of the backing rubber located symmetrically against a glass sheet, Figure 4 shows the extrusion suitable, for example, as a window frame embodying the asymmetric lipped location groove, Figure 5 shows the asymmetric lipped flexible seal location groove on both distal extremities of a mullion extrusion, Figure 6 shows a hinged door frame showing a sealing strip groover locating a sealing strip which seals on the door panel (open out door panel), Figure 7 shows stile pairing for doors having both the feature for glazing and mutual self sealing purposes, and Figure 8 shows the feature in a window sash to seal onto a window frame.

Whilst reference is made to single glazing any double, triple, etc. glazing panel structures can similarly be accommodated.

In the arrangement shown in Figure 3 a glass sheet, by way of example, is 0000 sealed from the weather by a backing rubber 2 or other appropriate preferably symmetric sea. To set down the upper extremity 3 in the arrangement as shown in Figure 3 (but equally to set up or set out a similar such extremity in other 00 applications around the perimeter of a glazing panel) the locating region 4 of the extrusion has the channel thereof lipped by asymmetric lips 5 and 6. That lip 5 which @000 is the more distal in the extrusion is directed inwardly towards the other a greater distance (ie; is wider) so as to provide the asymmetric channel opening and thus the 0 appropriate set down, set up or set out referred to and which is demonstrated in Figures 2 and 3.

.0@000As indicated previously the feature lends itself for use in the mitred perimeter structures to be glazed such as frames, opening window sashes, etc.. It equally can be used in butt joined structures, eg; hinged door panels, transoms to frames, sliding COMS ID No: SBMI-00994937 Received by IP Australia: Time 14:34 Date 2004-11-12 12-NOD-2004 16:32 A J PARK 54 9 3096943 P. SfI-6door panel. It can be used also with balustrading.

The present invention therefore includes not only any extrusion with such an asymmetric lip feature providing for such set downs, set up or set outs but also any assembly incorporating such features whether in conjunction with the flexible seal or not or the flexible seal and glazing panel or not. As stated visibility of the sealing strip also results from its use with, eg; hinged door frames and, eg; awning or casement window sashes.

oe

S*

e e COMS ID No: SBMI-00994937 Received by IP Australia: Time 14:34 Date 2004-11-12

Claims

12-NOU-2004 16:33 A i P A 2 ^1 12-OU2~J4 1 Jr,-rSA6 9 3096943 P. 11 -7- CLAIMS- I An extrusion to locate a flexible sealing strip, said extrusion having a channel having a lip constricted strip locating mouth the opening of which is asymmnetrically positioned to displace a said flexible sealing strip more to one side of the channel axis thereby in use, to allow said extrusion to obscure a fitted such flexible sealing strip when said extrusion is viewed from a side opposite that to which said channel opens. 2. A glazing or sealing extrusion to locate a flexible glazing or sealing strip for a glazing panel, door panel or window sash, the provision of a flexible glazing or sealing strip retention channel to open towards a surface of said glazing panel, door panel or window sash to be positioned, said channel being at least partly closed (ic; constricted) at its mouth by a by a pair of inwardly directed integral protrusions (hereafter "lips"), with that lip (the "distal lip") to, in use, be positioned more from the edge of a glazing panel, door panel or window sash, to be positioned against said flexible glazing or sealing strip to be fitted providing by a greater inward directed intrusion a more constricting lip than the other lip (ie; thereby to encourage a non synmnetric location of a flexible glazing or sealing strip in said channel) to thereby :allow the obscuring from view, in use, of the flexible glazing or sealing strip. An extrusion of claim 1 or 2 wherein the form of the channel and its lips is substantially hereinbefore described with reference to any one of Figures 2 to An extrusion of claim 2 or 3 wherein said glazing or sealing extrusion may be 4 that to provide a mullion, a window frame, a hinged door rail, a hinged door stile, a door frame, a sash for awning windows. A mullion, a window frame, a hinged door rail, a hinged door stile, a door frame or a sash for an awning window which includes a glazing or sealing extrusion with asymmetry substantially as hereinbefore described with reference to Figures 2 through 5, in its flexible glazing strip location channel. 6. An assembly of apparatus of claim 5 and a flexible glazing or sealing strip located in the channel of said extrusion, 7. An assembly of claim 6 wherein said strip is a backing rubber symmetric in COMS ID No: SBMI-00994937 Received by IP Australia: Time 14:34 Date 2004-11-12 12-NOU-204 16:33 A J PA< 64 9 3096943 P.12 -8- its transverse section. 8. An assembly for a glazing panel, door panel or window sash comprising or including: an extrusion having a channel locating a flexible glazing or sealing strip;and a member having a surface against said strip and means to hold said extrusion, said strip and said member in that relationship wherein said extrusion, by virtue of an asymmetric opening of said channel better allows the strip to be obscured from view from the extrusion side thereof than would have been the case had the channel had a symmetric opening. 9. An assembly of claim 8 with reference to any of Figures 2 to A method of minimising the visibility of a flexible glazing or sealing strip which comprises or includes locating such a glazing or sealing strip in a location channel of an extrusion therefor, such channel having asymmetric inwardly intruding lips with one lip having a greater inward intrusion so as to be able to set in the flexible glazing or sealing strip more from a distal extremity of the extrusion. 0* *o Dated: 26 April 2000 Fbg; Q iETCIR- AUjRnNifffv HNItfflTCOE, F-JleAer jtUo106 UokA t..ik A J PARK i"Patent Attorneys for the Applicant 9 9 *99@ 99o COMS ID No: SBMI-00994937 Received by IP Australia: Time 14:34 Date 2004-11-12