AU598909B2 - Door and window frame and extruded profile therefor - Google Patents

Description

COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952 COMPLETE SPECIFICATION (original) FOR OFFICE USE Class Int. Class Application Number: Lodged: Complete Specification Lodged: Accepted: Published: P'eiority: Related Art; Name of Applicant: Address of Applicant: Actual Inventor Address for Service: A L WINDOWS PTY. LIMITED 8 Reid Street, BAYSWATE~R Victoria 3,153 Commonwealth of Australia LESLIE ARTHUR JOHNS ARION REEVES PIERSON DAVIES COLLISON, Patent Attorneys, 1 Little Collins Street, Melbourne, 3000.

Complete specification for the invention entitled: DOOR AND WINDOW FRAME AND EXTRUDED PROFILZ THEREFOR The followi.ng statement is a full description of this invention, including the best method of performing it known to us 1 la DOOR AND WINDOW FRAME AND EXTRUDED PROFILE THEREFOR The present invention relates to window and door frames, particularly but not only for sliding windows and doors, and to an extruded profile therefor, It has become common prjctice for aluminium window and door frames to be locxted in a suitable opening in a building or other structure by means of a flange which projects rearwardly (ie away from the opening) from the portion of the frame which defines one or more channels for receiving, for example, sashes and/or glazing of the doors and/or windows.

This may mean that the overall frame has a larger maximum cross-section than the cross-section of the opening into which it is to be located. However this does not present a problem when the frame is inserted as the structure is being constructed since the 2 structure may be built around it.

It is also common for aluminium windows to replace, for example, original timber windows and in this case it is clearly not possible to have a frame whose overall cross-section is greater than the opening. It has thus been the practice to provide a frame of the above described type where the maximum cross-section of the frame including the rearwardly extending mounting flange is substantially the same io as the cross-section of the opening, Then in order to mount the frame in the opening, the reveal which extends around the opening is displaced forwardly into the opening and the flange is secured to the edge of the reveal. This arrangement is illustrated in Figure 1 which depicts a prior art frame mounted in an opening in a brick veneer wall 12.

The wall 12 comprises an external layer of brick 14, an internal stud 16 from which internal plasterboard 18 is supported and a reveal 20 which extends around and within the window opening and is supported in a spaced manner from the stud by means of a timber spacer 22. An architrave 24 extends internally around the window opening bridging the join between the plasterboard 18 and reveal The profile of the prior art frame 10 which extends around the opening comprises a base 2.6, three wall members 28 which project at right-angles to the base and define respective channels to receive, for example, the sashes and/or glazing (not shown), and a rearwardly projecting flange 30 extending from the base. The frame 10 is secured in the opening by engaging the flange 30 with the external edge of the reveal, for example by means of screws, nails or bonding agent. The flange 30 is able to engage the 11 3 edge of the reveal 20 because the reveal projects further into the opening than the layer of brick 14.

The frame 10 is thus able to be slid inwardly through the brick layer until the flange engages the reveal.

The type of connection shown in Figure 1 has been utilised for economic reasons since it permits the same profile for the frame to be used whether the frame is for an original building or to replace existing windows. As may be seen in Figure 1, this arrangement provides two disadvantages. Firstly, the actual opening size of the window is reduced by, at each side, a distance equal to the length of the flange 30, and secondly a gap 32 is left between the outer wall member 28 and the layer of brick 14. This gap is considered unsightly and is usually bridged by a length of angled material (not shown). The angled material may be secured to the end face of the brick layer 14 and overlap the outer wall member 28 to close the gap 32.

It is an object of the present invention to alleviate the disadvantages of the aforementioned frame profile.

SAccording to the present invention there is provided a frame for a window or door opening which opening is partly defined by a reveal to which the frame is capable of being secured, the frame being formed from an extruded profile comprising at least one channel to receive the sash and/or glazing of the window or door, the channel having spaced substantially parallel walls and a base and opening in the plane of the window or door opening, the profile further comprising a flange for mounting the frame to the reveal which flange projects substantially perpendicularly to said plane whereby the flange may be secured to a surface of the reveal which extends perpendicularly to said plane such that the base of the n channel is substantially coplanar with the surface of the reveal.

4^I 4 Further according to the present invention, there is provided an extruded profile for a frame for a window or door opening which profile comprises a base and spaced ;ide walls projecting from the base to define a channel section adapted to receive an edge of a sash, light or door, the profile further comprising a flange extending substantially parallel to the base to define a surface by which the profile may be secured to a surface of the structure extending perpendicular to the plane of saidi sash, light or door such that the base is substantially coplanar with the said surface of the structure.

Advantageously, the flange Is arranged so that it is capable of overlying and engaging said surface of the reveal which is opposed to the window or door opening, that is the surface of the reveal facing the wall structure in which the opening is, provided. The connection of the frame to the reveal may then be hidden behind the frame. Such connection may be by means of a bonding agent or of a suitable 29 fastener such as a nail or screw, but conveniently the fastening is performed by crimping the flange into the material of the reveal.

The f lange may extend from a wall defining the or one of the channels, or from an extension of such wall, so that the wall may conveniently abut the outwardly facing end face of the reveal.

Alternatively, such wall need not form part of the or one of the channels. Most preferably, the wall has a second parallel flange or projection so that the two flanges may embrace the reveal.

Most advantageously, the first mentioned flange extends from or from adjacent a base of the channel.

Bly the present invention# the arrangement of the mounted f rame may be such that it lies substantially wholly within the principal plane of the reveal. This meant that the size of opening 0 defined by the channel or channels of the frame can be substantially the same as the size of the opening defined in the structure. Furthermore, no trim may be necessary.

If the frame is to be used in original buildings, it may conveniently be provided with a j further flange such as the flange 30 in Figure 1 which may abut the interior face of, for example, the Jbrick veneer layer of the structure around the 0 opening. Such a flange may assist to locate the frame as desired but, clearly, will prevent a full sized frame in accordance with the invention being used to replace existing windows since it projects beyond the confines of the opening in the structure.

Accordingly, if such a further flange is provided it may conveniently be readily separated from the remainder of the frame, for example by being connected thereto with a thinner section.

One embodiment of a frame and profile in accordance with the present invention will now be j described by way of example only with reference to the accompanying drawings in which: Figure 1 is a cross-sectional view from above of one side of an opening in a brick veneer structure showing a prior art window frame profile; Figure 2 is a view similar to Figure 1 but showing a profile in accordance with the present invention; and Figure 3 is a perspective view from above of the section shown in Figure 2.

The wall structure shown in Figures 2 and 3 is identical to that in Figure 1 and is given the same reference numerals.

The frame profile 34 shown in Figures 2 and 6 i 6 3 has a base 36 from which extend into the opening defined by the wall structure 12 three parallel walls 38 defining two adjacent channels for receiving respective sashes and/or glazing of the windows or doors (not shown). The outer end wall 38 is shown inclined inwardly, but any of the walls 38 may adopt a desired and appropriate angle. The inner end wall 38 is shown as extending perpendicularly from the base 36 and conveniently abuts the outer end face of the reveal 20. This side wall 38 is extended slightly to the opposite side of the base 36 and a flange 40 extends therefrom parallel to and away from the base. The flange 40 thus overlies the inner side face of the reveal 20 and may be crimped or otherwise fastened to the reveal. The flange 40 is shown in Figures 2 and 3 as having a lip 42. At the end of this side wall 38 remote from the flange 40, a second shorter flange 44 is provided which extends parallel to the flange 40 to define with the associated wall 38 a groove 46 in which the reveal 20 is closely received.

A sealing channel 48 is provided at the opposite end of the base 36 to engage the layer of brick 14 and to hold the base perpendicular to the plane of the opening in the wall structure 12.

An optional further flange 50 projects from the base 36 away from the opening to assist location of the frame relative to the layer of brick 14. The further flange 50 has been found to be not essential and may be formed in such a manner that it is readily broken off if so desired. It will be appreciated, that when the further flange 50 is broken off adjacent the bas( 36, the window frame 34 may be slid through the opening defined by the layer of brick 14 7 to engage the groove 46 over the outer end face of the reveal The frame 34 may be formed in any suitable extrudable material, such as aluminium, and may adopt any suitable shape which will permit it to be secured to the reveal with the or each channel disposed substantially within the principal plane of the reveal.

The present invention has been described with reference to an opening in a brick veneer wall but it will be appreciated that the wall structure could alternatively be double brick, weatherboard, or of any other appropriate material. A particular advantage is provided by the profile of the invention where it is used in a double brick wall to replace an existing window. Under these circumstances the faces of the interior and exterior layers of brick defining the window or door opening are aligned and minimal clipping or cutting of one or both brick layers will be required to provide a flush fit of the profile on the roveal and on the faces.

Furthermore it will be appreciated that a substantial saving in timber and cost is achievable by the profile of the invention as the profile itself bridges at least part of the air gap between the interior and exter4.or layers of the structure, thereby allowing the reveal to be of narrower cross-section.

Those skilled in the art will be aware that many modifications and variations may be made to the described frame and all such modifications and variations should be considered as within the scope of the present Invention.

Claims (6)

1. 2. An extruded prof ile according to claim 1 wherein the flange extends from or from adjacent the base of the profile.
2. 3. An extruded profile according tQ claim 1 or claim 2 wherein the flange extends from a wall projecting substantially transversely to and from one end of the base of the profile.
3. 4. An extruded profile according to claim 3 wherein a second flange extends fromn the wall substantially parallel to the first-mentioned flange to define a groove therebetween. An extruded profile according to claim 4 wherein the second flange projects a lesser distance from the wall than the first-mentioned flange.
4. 6. An extruded profile according to any one of claims 3 to 5 wherein the well comprises one of the spaced. side walls.
5. 7. An extruded profile according to any one of claims 3 to 6 wherein the first-mentineted flange projects from the
6. 00041.9,6 9 wall on the opposite side of the base to the spaced side walls. 8. An extruded profile according to any one of the preceding claims wherein a furthei flange projects generally transversely from the side of the base remote from the spaced side walls. 9. An extruded profile according to claim 8 wherein the further flange is readily separable from the base. An extruded profile for a frame for a window or door opening and substantially as herein described with reference to Figurces 2 and 3 of the accompanying drawings. o 11. A frame for a window or door opening which opening is partly defined by a reveal to which the frame is capable of being secured, the frame being formed from an extruded profile comprising at least one channel to receivo the sash and/or glazing of the window or door, the channel having spaced substantially parallel walls and a base and opening in the plane of the window or door :1 opening, the profile further comprising a flange for mounting the frame to the reveal which flange projects substantially perpendicularly to said plane wheraby the flange may be secured to a surf ace of the reveal which extends perpendicularly to said plane such that the base of the channel is substantially coplanar with the surface of the reveal. D~ATED this 19th day of April 1990. A G L WINDOWS PTY~. LTD. By Its Patent Attorneys DAVIES COLLISON