AU709564B2 - Window frame or door frame assembly having an internal reveal with a cover - Google Patents

Description

2 WINDOW FRAME OR DOOR FRAME ASSEMBLY HAVING AN INTERNAL REVEAL WITH A COVER FIELD OF THE INVENTION This invention relates to an extruded window frame 10 or door frame assembly having an internal reveal with a .e cover.

DESCRIPTION OF PRIOR ART Hitherto, we have filed Australian patent application no. 75857/94 for a window frame or door frame assembly which has an internal reveal. The internal reveal is of extruded material and is provided of extruded material so as to produce an economical window construction. In the past prior to filing of the o patent application 75857/94 reveal parts were made from wood. Wood is becoming an increasingly precious resource and as a result is becoming very expensive.

S"Thus, attempts have been made to provide substitutes for wood.

The aforementioned patent application describes an embodiment in relation to Figure 12 where the reveal frame is provided with a channel. The reveal frame can be fixed to a building by screws or nails passing into the channel and through the reveal frame material.

A

cover can then be provided to the channel to hide the fixing means such as nails or screws.

It has been found that such fixing is desirable and attempts have been made to provide enhanced covers.

H:\Gale\Keep\specl\pN9753.Dowell.doc 28/04/97 3 The present invention is directed to such an assembly having an improved cover.

STATEMENT OF INVENTION According to a first broad aspect of the present invention there may be provided an extruded window frame or door assembly having an internal reveal, said assembly having an extruded frame to carry said window or door, and a reveal frame, said reveal frame having at least two extruded reveal frame parts interconnected with said extruded frame, one reveal frame part interconnected with one side or top of said extruded frame and the other reveal part interconnected with an S• opposite substantially parallel extending side or bottom of said extruded frame, each interconnection being by a flange of said reveal frame part located behind a flange of said extruded frame sides or top or bottom, to inhibit against removal of said reveal frame from said extruded frame in a direction transverse to the plane of ee' the window or door to be carried by said frame, 20 and characterised by said reveal frame having a recessed channel formed in a reveal face thereof to permit fastening means to be passed into said channel and through a reveal part in said channel to permit fixing of said reveal frame relative to a building, and wherein said channel is covered after fixing by a reveal cover of generally "L"-shape in transverse cross-section, the leg of the extending at least completely across said channel and to the edge face of said reveal frame which is innermost of said building, and wherein the foot of said extends over said edge face of said reveal frame, and wherein the innermost face of said reveal cover is provided with surfaces to enable clip fastening to said reveal frame.

\\telbO\homeS\MCooper\Keep\Speci\PN97a .Dowell.doc 30/06/99 4 It is particularly preferred that said reveal cover extend over the whole exposed face of said reveal frame so that when fitted said reveal cover has the appearance of extending from said extruded window frame or door frame.

It is also particularly preferred that the foot of the of said reveal cover extend up to either an internal wall surface of said building or up to an architrave surrounding said window frame or door frame 10 to completely hide the reveal frame from view.

e S" In one embodiment the foot of the of said *000reveal cover is shaped to give the appearance of an architrave.

The cover, in combination with the reveal frame, therefore has the advantage of permitting the reveal frame to be fixed to the building such as by nails or screws passing into said channel and through a reveal part in said channel, and then completely covering said channel whilst maintaining an aesthetic appearance to the assembly. In certain embodiments, the reveal cover can be removed at the time of painting the building and S. time consuming cutting-in of a painter wall surfaces around the window frame or door frame assembly can be minimised and not as critical. After painting, the reveal cover can then be fitted to give a completely clean finished line to the window frame or door frame assembly.

BRIEF DESCRIPTION OF DRAWINGS In order that the invention can be more clearly ascertained examples of preferred embodiments will now be described with reference to the accompanying drawings wherein: H:\Gale\Keep\speci\pN9753.Dowell.doc 28/04/97 1 I* I 5 Figure 13 is a transverse horizontal crosssectional view of an assembly taken across a vertically extending part; and Figure 14 is a view similar to that of Figure 13 but of a further example.

DETAILED DESCRIPTION OF PREFERRED

EMBODIMENT

Reference will now be made to the specification of Australian patent application no. 75857/94 which is reproduced herein together with drawing Figures 1 through 12. The claims of the specification relating to that patent application have not been included.

H:\Gale\Keep\speci\pN9753.Doell.dc 28/04/97 X I 6 REVEAL FOR WINDOW OR DOOR ASSEMBLY Field of the Invention This invention relates to a reveal for a window or door assembly and relates particularly, but not exclusively, to such for aluminium extruded window or door assemblies.

Description of Prior Art Hitherto, it has been common to provide an extruded window or door frame and to attach a wooden reveal to the window or door frame so that it extends inwardly of the building to which it is attached. Recently, quality woods for finishing surfaces have become quite expensive. It is considered that it is now cost effective to produce the reveal from extruded section and particularly, although not exclusively, from extruded aluminium.

Object and Statement of Invention The present invention is directed towards a reveal of that nature and attempts to overcome the cost problem associated with the use of a total wooden reveal for such windows or doors.

According to a first broad aspect of the present invention there may be provided an extruded window frame or door assembly having an internal reveal, said assembly comprising an extruded frame to carry said window or door, and a reveal frame, said reveal frame comprising at least two extruded reveal frame parts interconnected thereto, one reveal frame part H:\Gaie\Keep\speci\pN9753.Do.,ei doc 28/04/97 I f 7 interconnected with one side or top of said extruded frame and the other reveal part connected with an opposite substantially parallel extending side or bottom of said extruded frame, the interconnection being by a flange of said reveal frame part located behind a flange of said extruded frame sides or top or bottom, to inhibit against removal of said reveal frame from said extruded frame in a direction transverse to the plane of the window or door to be carried by said frame.

10 Most preferably there are two interconnecting e S" reveal frame parts extending between adjacent ends of said two reveal frame parts and connected therewith.

It is further preferred that all four reveal frame parts are of the same transverse cross-section and that said two interconnecting reveal parts also have a flange thereof located behind a flange of said extruded frame sides or top or bottom.

In accordance with a further aspect of the present invention there may be provided an extruded reveal part for an extruded window or door frame, said reveal part having a surface which will be exposed as the reveal face and an edge surface for butting with the extruded window or door frame, said reveal having a flange extending from behind the reveal face and past the edge surface, to permit location of said flange behind a flange of said extruded frame to inhibit against removal from said door or window frame in a direction transverse to the plane of a window or door to be carried by said frame.

Most preferably, said extruded reveal part has surfaces at the rear of said reveal face which can be used to effect mounting of said reveal and said frame to a building.

H:\Gal\Keep\Sp ci\PN9753.DowIllldc 28/04/97 I nI r 8 It is particularly preferred that said surfaces comprise two opposed faces which can be engaged by a mounting bracket.

It is further particularly preferred that the rear of the reveal be provided with either screw flute channels or flange surfaces which will permit two such reveals, which are brought together in butting, mutually perpendicular alignment, to be interconnected with screws or stakes carried behind said reveal face.

In another embodiment, the mounting can be effected by having the reveal face provided with a recessed e.

channel, and fastening means can be passed into said channel and through said reveal part and an infill cover can then subsequently be fitted into the channel to cover the fastening means.

~Brief Description of Drawings In order that the invention can be more clearly ascertained reference will now be made to the accompanying drawings wherein: Figure 1 is an isometric view of a lower bottom *oocorner of an assembly looking from the inside of a building outwards, without any internal architrave fitted to the assembly; Figure 1A is a view similar to Figure 1 but showing an architrave fitted to the assembly and plasterboard or other covering in place.

Figure 2 is a rear isometric view of part of the assembly showing interconnection of a mounting bracket; Figure 3 is a transverse cross-sectional view-of a reveal part; Figure 4 is an isometric view of a mounting bracket; H:\Gale\Keep\spclAPN9753.Dowell.doc 28/04/97 9 Figure 5 is a plan view of the mounting bracket shown in Figure 4; Figure 6 is a side view of the mounting bracket shown in Figures 4 and Figure 7 is close-up transverse cross-sectional view of the assembly at the sill level; Figure 8 is a transverse horizontal section of the assembly taken across a vertically extending part in the jamb; Figure 9 is a vertical transverse cross-sectional view taken at the head level; o.

Figure 10 is a side view showing how fastening eS **screws may be used to interconnect the reveal parts; S. Figure 11 is a side view showing how a corner stake may be used to interconnect the reveal parts; and ~Figure 12 is a transverse cross-sectional view of a reveal part which has a channel therein through which fastening means can be passed to mount the reveal to a Sbuilding.

Detailed Description of Preferred Embodiment So.. The present invention is applicable to window or door frame assemblies and the description which follows will be in relation to a window assembly. It should be appreciated that the concepts expounded apply also to doors.

Referring now to Figures 1 and 1A there is shown an extruded window frame 1. The window frame 1 may have a further frame carried thereby which supports a pane of glass. Alternatively, a pane of glass may be suitably glazed into the window frame 1. The window frame 1 is held relative to a window opening 3 provided in the external covering of the building. In this example, the external covering is of bricks and mortar 5. The H:\Gale\Keep\specl\PN9753. Dowell.doc 28/04/9 10 building has an internal stud frame wall and one such stud 7 is shown. The stud 7 is aligned relative to the window opening 3. A noggin 9 extends between a pair of studs 7 on each side of the window opening 3 at the sill level. A similar noggin 9 may extend between the studs 7 at the head level.

The window frame 1 can be of known configuration and of known extrusions.

A reveal frame 11 is provided on the internal part of the assembly. Thus, the reveal frame 11 can be referred to as an internal reveal. The reveal frame 11 is fabricated from an extrusion which may, typically, be c0 of suitable metal such as aluminium or it may comprise a *0*0 suitable plastics material. Typically, an aluminium extrusion is preferred.

i" ~Figure 1A shows plaster board 13 attached to the studs 7 and noggin 9 and an architrave 15, such as of wood, attached to the inside edge of the reveal relative to the building.

0..20 Referring now to Figure 2 which is a rear isometric *view of part of the assembly comprising the window frame 1 and the reveal frame 11, it can be seen how the reveal frame 11 is interconnected with the window frame 1. The reveal frame 11 is formed from a reveal part 17 which has a reveal face 19 which is intended to be the exposed face of the reveal in the assembly. It also has an edge surface 21 for butting with an internal face 23 of the window frame 1. The reveal 11 also has a flange extending from behind the reveal face 19 past the edge surface 21, to permit location of the flange 25 behind a flange 27 of the window frame 1. As clearly shown in Figure 3, the edge surface 21 may have a protruding rib 29 so that the forward end of the rib 29 engages with H:\Gale\Kep\speci\PN9753.Dowel.doc 28/04/97 11 the face 23 of the window frame. Figure 3 also clearly shows that the flange 25 of the reveal is generally transversely extending relative to the reveal face 19 and is formed on a leg 31 which extends from the edge surface 21. Preferably, the flange 25 of the reveal is hook-shaped as shown, although this is not absolutely essential. Thus, the hook is formed by a rib 33 extending mutually perpendicular to the flange Thus, in use the flange 25 locates behind flange 27 of the window frame 1 and inhibits against removal of the reveal frame 11 in a direction transverse to the plane of a window carried by the window frame i.

The flange 27 of the window frame 1 may be provided with an upstanding rib 35 so that the upstanding rib 0 *15 can locate within the hook-shaped configuration of the flange 25 and rib 33. Thus, this will inhibit against considerable lateral in and out movement of the reveal frame 11 relative to the window frame 1 in a direction horizontally across the window opening.

20 In the embodiments shown in Figure i, the reveal 0 *frame 11 is formed by identical section extrusions. The vertically extending extrusions are cut to a length to overlap the ends of the horizontally extending extrusions as shown by Figures 1 and 1A. Thus, in the embodiments shown in Figures 1 and 1A, and Figure 2, the reveal frame 11 is formed from four reveal parts. Thus, there are two reveal parts extending along the upright sides of the window frame 1 and two further reveal parts extending along the top and bottom parts of the window frame 1. Accordingly, it can be said that two such reveal frame parts the vertically extending parts are connected so that one of those parts is connected with a side of the window frame 1 and the other of the H:\Gale\Keep\spci\PN9753.Dowell.doc 28/04/97 12 two reveal frame parts is connected with an opposite substantially parallel extending side of the window frame i. Similarly, the horizontally extending reveal frame parts are connected so that one is an interconnected with a top of the extruded frame of the window frame 1 and the other is connected with the bottom of the extruded frame of the window frame 1 at the sill level again an opposite substantially parallel extending part of the window frames.

The reveal frame parts are provided with surfaces 37 at the rear of the reveal face 19 which can be used to effect mounting of the reveal part to the building.

Figures 2 and 3 clearly show that the surfaces 37 too present two opposed faces which can be engaged by a mounting bracket 39. The mounting bracket 39 is formed t from a sheet of strip metal such as galvanised sheet steel and provided with a body part 41 and a mounting V 0 leg 43. Typically the mounting bracket 39 is pre-formed to the shape shown in Figures 4, 5 and 6 with the 20 mounting leg 43 being perpendicular to the body part 41.

too° The body part 41 is provided with a pair of lugs pressed from the sheet material of the body part 41.

The lugs are displaced from the body part 41 by a toe e distance approximately equal to the thickness of flanges 47 on which the surfaces 37 are provided. The inside edges are spaced slightly less than the spacing of the surfaces 37. The lugs 45 may be split as shown and bent downwardly as indicated. In use, the mounting bracket 39 can be located so that the lugs 45 engage over the flanges 47 and effect twisting locking engagement with the surfaces 37 thereon. The split arrangement of the lugs 45 will permit biting engagement of the lugs into the metal of the flanges 47 when the mounting H:\Gale\Keep\spei\N9753.Dowell d-o 28/04/97 13 bracket 39 is twisted to engage over the flanges 47. In this arrangement, the mounting bracket 39 will be disposed transversely across the length of the reveal part. This is shown clearly in Figure 2.

Figure 4 shows that a further mounting leg 43' may be provided on the body 41. This may be preformed so that it extends parallel with the mounting leg 43 or it may be left so that it extends parallel with the body 41 and bent by the installer as required. Figure 4 shows how it can be bent and swung to the required position.

The distance between the mounting legs 43 and 43' will be arranged to correspond with the width of the stud 7 or the noggin 9. A nail or like fastening means can be 0 passed through the mounting legs 43 or 43' through a 15 preformed opening 49.

By use of the mounting bracket 39 as shown, the reveal frame 11 can be fastened relative to the building e.e, so that the window frame 1 is correctly disposed relative to the window opening 3. In the assembled 20 relationship of the reveal frame 11, the window frame 1 is carried by the reveal 11 and sits in a required position in the window opening 3. Thus, the window *frame 1 is not directly connected to the building or to the outer covering of the building such as the bricks and mortar 5. Suitable silicon or other sealing material may be used to effect a weather-tight seal if required.

The reveal frame 11 is held integral to itself by the use of screw flute channels 51 on the rear of the face 19. Thus, when the reveal parts are cut to length and then brought together in butting, mutually perpendicular alignment, they can be interconnected with screws passing through the face 19 of one of the reveal H:\Gale\Reep\speci\PN9753.DoweI .doc 2i/04/9, 14 parts such as the vertically extending part and into the screw flutes 51 of the other part. The arrangement is such that the screws are carried behind the reveal face 19 and therefore cannot be seen following complete installation of the assembly to a building.

The rear of the reveal face 19 is provided with a channel 53 at the side opposite to that of the flange The channel 53 is formed with opposed parallel sides 55 and 57. The channel 53 is provided to receive an insert 59 which may be of wood or of a high density polyethylene or other suitable material. The insert may be of a short length or it may extend the whole length of the reveal parts. The insert is typically provided with a corrugated surface which can matingly engage with 15 a corresponding corrugated surface on the internal faces *of the channel sides 55 and 57 so that it is a force-fit therein. The insert 59 is provided so that nails or other fastening means can penetrate the insert 59 so that the architrave 15 can be fixed thereto.

20 Figures 7 through 9 show various transverse crosssectional views of the assembly shown in Figure 1A.

These figures also show that a screw-tensioning device 61 is screwed through the flange 25 of the reveal part and wedged against an outer face of the window frame 1.

The insertion of the screw tensioning means 61 in this way tends to spread the reveal part 17 relative to the window frame 1 and thus force the two sections into locking engagement. It also can inhibit against the rattling of the window frame 1 relative to the reveal frame. Thus, the screw tensioning device 61 can be inserted at desired locations around the assembly.

It should be observed from all of the previous figures and, in particular, Figure 3 that the flanges 47 H:\Gale\Keep\speci\pN9753,Dowell.doc 2A/04/9 15 are generally parallel and aligned co-planer. It is also observed that the outermost face of the flanges 47 on the outermost periphery of the reveal frame 11 only protrudes marginally outwardly past the edge face 63 (see Figure 8) of the window frame 1. Thus, whilst the window frame 1 is provided with a mounting flange which extends outwardly past the outer face of the flanges 47, the mounting flange 65 is provided with a score line 67 to enable the outer portion of the mounting flange 65 to be removed by breaking therefrom.

Thus, in this arrangement, when the outer portion of the mounting flange 65 is removed, the outermost width and a height of the assembly comprising the window frame 1 and the reveal frame 11 corresponds substantially or 15 marginally less to the window opening 3 or the space o between opposed studs 7 or noggins 9. Thus, the assembly is suitable for retro-fitting into existing buildings by removal of the outer portion of the flange 20 It should be appreciated that in the embodiment previously disclosed, that the horizontally extending reveal frame parts 17 may be cut slightly longer than is necessary to effect tight engagement of the a S.interconnecting flanges of the upright reveal part 17 with the corresponding flanges of the upright frame parts of the window frame 1. Thus, slight adjustment can be effected in the positioning of the reveal frame 11 relative to the window frame 1 by moving the whole reveal frame 11 left or right as may be needed. Similarly, the horizontally extending reveal part 17 may be fitted with a similar lengthened arrangement so that up and down displacement may be effected. In this way, adjustment on site can be made to cope for slightly H:\Gale\Keep\spec,\N9753.Dl1owe Id 28/04/9? 16 misplaced studs 7 or noggins 9. The screw tensioning devices 61 may be arranged to effect the necessary transverse side to side or vertical up and down displacement as needed. Thus, appropriate insertion of the screw tensioning devices 61 can move the reveal frame 11 to some minor degree relative to the window frame 1.

Figure 10 shows the screw interconnected arrangement of the reveal part 17 at one corner.

Figure 11 shows a different arrangement of interconnection where a corner stake 69 can be force fitted into appropriate channels in the reveal part 17.

In this arrangement, a mitre cut can be provided at the S. butting ends of the reveal part 17.

15 Figure 12 shows a transverse cross-sectional view of a different arrangement of the reveal part 17 whereby mounting of the reveal frame 11 can be by way of screws or like fasteners. Here a channel 71 can be formed in the face 19 of the reveal part 17. The head of the 20 screw 73 can be below the face 19 when the screw 73 is .driven home. An infill cover 75 can be force fitted into the channel 71 to cover the head of the screw 73.

*"The cover 75 may be arranged to snap-lock into the a channel 71 if desired. Typically the cover 75 is of the same material as the reveal part 17 although it may be of some other material to provide a contrasting decorative appearance if required.

In the embodiments described it can be seen that the cut of the reveal parts 17 is effected by a straight cut and that check-out cuts and the like are not needed to effect a neat engagement of the abutting frame part 17.

H:\Gaie\Keep\speci\N9753.Dowell.do c 28/04/97 17 The whole assembly can be uniformly painted or coated such as by powder coating to give a durable surface to the assembly.

Modifications may be made to the invention as would be apparent to persons skilled in the aluminium and/or window or door arts. For example, the window frame 1 may be fitted with an architrave in accordance with the disclosure in our Australian Patent Specification No 590479. A similar internal architrave 15 may be provided in accordance with the disclosures in that aforementioned Australian patent specification.

In another modification only two reveal parts with the flanges 25 for connecting behind flanges 23 of the window frame 1 may be used. In this case they may be S. 15 fitted to the two vertically extending jamb parts of the window frame 1 or to the two top and bottom horizontally extending parts of the window frame 1. These two reveal parts can then be interconnected with interconnecting parts at their ends to hold them in the required spaced 20 apart position. For example, if the two vertically 0 extending reveal parts 17 are fitted to the window frame 1, the horizontal extending parts may be wood or other *.material parts, and these may be intended to be visible or non-visible in the final assembly when fitted in a building. These horizontally extending parts may not have flanges thereon corresponding to flanges 25 and thus may be used merely to hold the vertically extending reveal parts in position.

These and other modifications may be made without departing from the ambit of the invention, the nature of which is to be determined from the foregoing description.

H:\Gale\Keep\speci\PN9753.Dowell.doc 28/04/97 18 Referring now to Figure 13, like components to those in the previously referred to Australian patent specification of patent application no. 75857/94 are provided with the same numerical designations and will not be referred to again in detail. The fastening of the window frame 1 to the reveal frame 11 is by the same hook arrangement. The reveal frame is fastened to a stud 7 of the building by means of a nail or screw 101 passing into the channel 71 and through a reveal part 103 in the channel 71. Packing 105 can be provided behind the reveal frame 11 and the stud 7 so that the rib 29 on the frame part 11 buts with the face of the window frame 1 and in effect locks the reveal part 11 angularly relative to the window frame 1. The use of 15 nails or screws to fix the reveal frame 11 and the *window frame 1 into the window opening is readily compatible with existing building techniques for fixing window frames and therefore does not require additional window fixing skills. It should be noted in Figure 13, 20 that the internal edge surface of the reveal frame 11 relative to the building is provided with an end flange 106 which has an upstanding rib 107. The forward edge *9of the rib 107 is arranged to align with the front face .i* of panelboard or plasterboard 13 which is used to provide the internal finished surface walls of the building. Typically, the flange 106 can be of the same width dimension as the thickness of the panelboard or plasterboard 13. Alignment of the rib 107 with the front internal face of the panelboard or plasterboard 13, in turn, will displace the exposed weather face of the window or door fame 1 relative to the brickwork 5 in a direction inwardly or outwardly relative to the window or door opening in the building. The positioning of H:\Gaie\ieep\speci\PN9753.Dowell.doc 28/04/97 19 that weather face is not critical provided it extends outwardly past the internal face of the brickwork The bottom of the channel 71 is provided with an upstanding flange 109 with a bead 111 at its free Edge.

The reveal frame is provided with a bead 113 adjacent the end flange 106. The beads 111 and 113 provide a surface to permit clip fastening of a reveal cover 115 to the reveal frame 11. In the embodiment of Figure 13, the reveal cover 115 is provided with an internally upstanding flange 117 which has a bead 119 at its forward end. The cover 115 also has a bead 121 formed .on an internal surface which is arranged to engage with the bead 113 of the reveal frame 11. Thus, the reveal •ocover 115 can be fastened over the reveal frame 11 by movement in a direction It should be noted that the reveal cover 115 is of generally shape in transverse cross-section and that the leg 123 extends at least completely across the channel 71 and to the edge face 125 of the reveal frame 20 11 which is innermost of the building. It should also o abe noted that the foot 127 of the reveal cover 115 extends over the edge face 125 of the reveal frame 11.

a..

e "The height of the bead 107 is preferably chosen to be flush with the innermost exposed surface of the foot 127 of the reveal frame 115 so that the exposed surface of the foot 127 lies flush with the surface of the panelboard or plasterboard 13.

The assembly can be finished by fitting an architrave 129 around the window opening.

Referring now to Figure 14 there is shown an alternative example of cover 115. In this embodiment, the channel 71 is provided with a lip 131 which partly closes the opening of the channel 71. The lip 131 is H:\Gsde\Keep\spec\pN9753.Dowell doc 28/04/97 20 directed towards the inside of the building in which the window or door frame is to be fitted. The edge face 125 of the reveal frame 11 is provided with an inturned end flange 133 which is provided with a bead 135 on its outermost face at the free edge.

The cover 115 is provided with a flange 137 which provides a channel 139. The foot 127 of the reveal cover 115 is provided with a flange 141 which extends in a direction generally parallel with the front face of the leg 123. The internal free end of the flange 141 is provided with a bead 143 which is directed towards the leg 123.

.In use, the window frame 1 and reveal frame 11 are fitted to the stud 7 in the same manner as described previously. A reveal cover 115 is then fitted over the reveal frame 11 by moving the reveal cover 115 in a direction shown by arrow This, in turn, causes the reveal cover 115 to be attached relative to the reveal frame 11 by the lip 131 locating within the channel 139 20 and also by the beads 135 and 143 cooperating with one o ~another in a clip fastening arrangement. By such fastening, the internal face of the leg 123 of the .*reveal cover 115 engages with the external face of the reveal 11 and is held tightly relative to the reveal frame 11. It is also noted that the foot 127 of the reveal cover 115 is shaped to represent an architrave.

Thus, the foot 127 extends inwardly of the building past the edge face 125 and has a return 145 to but with the exposed face of the panelboard or plasterboard 13.

Thus, it can be seen that the reveal cover 115 is generally "L"-shape in transverse cross-section and the leg of the extends at least completely across the channel 71 to the end face of the reveal frame 11 which H:\Gale\Keep\spcA'. N~9753 Dowoll do c /04/97 21 is innermost of the building. The foot 127 of the shaped reveal cover 115 extends over the edge face 125 of the reveal frame 11. It is also seen that the innermost face of the reveal cover 115 is provided with surfaces to enable clip fastening to the reveal frame 11.

In both examples of Figures 13 and 14, the reveal covers may be fitted to the reveal frame 11 after painting of the panelboard or plasterboard 13. In this way, careful detailing by painters is no longer required as the fitting of the cover 115 then finishes the assembly with clean lines against the panelboard or plasterboard 13 or against the architrave 129.

In both embodiments it is noted that the cover 115 15 extends over the whole of the exposed face of the reveal frame 11 so that when it is fitted, the reveal cover has the appearance of extending from the window or door frame 1. This also provides a clean appearance to the assembly.

20 Modifications may be made to the invention as would be apparent to persons skilled in the building construction arts and/or aluminium extrusion arts. For example, other flanges or the like may be provided on the internal face of the reveal cover 115 or the reveal frame 11 to permit clip or other snap-lock fastening of the reveal cover 115 relative to the reveal frame 11.

These and other modifications may be made without departing from the ambit of the invention, the nature of which is to be determined from the foregoing description.

H:\Gale\Koep\speci\PN9753,Doeii-doc 2 3/04/9 4. 22 THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS: 1. An extruded window frame or door assembly having an internal reveal, said assembly having an extruded frame to carry said window or door, and a reveal frame, said reveal frame having at least two extruded reveal frame parts interconnected with said extruded frame, one reveal frame part interconnected with one side or top of said extruded frame and the other reveal part interconnected with an opposite substantially parallel extending side or bottom of said extruded frame, each o interconnection being by a flange of said reveal frame part located behind a flange of said extruded frame sides or top or bottom, to inhibit against removal of 15 said reveal frame from said extruded frame in a direction transverse to the plane of the window or door to be carried by said frame, and characterised by said reveal frame having a *e recessed channel formed in a reveal face thereof to 20 permit fastening means to be passed into said channel and through a reveal part in said channel to permit fixing of said reveal frame relative to a building, and wherein said channel is covered after fixing by 25 a reveal cover of generally "L"-shape in transverse cross-section, the leg of the extending at least completely across said channel and to the edge face of said reveal frame which is innermost of said building, and wherein the foot of said extends over said edge face of said reveal frame, and wherein the innermost face of said reveal cover is provided with surfaces to enable clip fastening to said reveal frame.

\\melbOl\home$\MCooper\Keep\Speci\PN9753.Dowell.doc 30/06/99

Claims (2)

1. 2. An extruded window frame or door assembly as claimed in claim 1 wherein said reveal cover extend over the whole exposed face of said reveal frame so that when 6* 0 S 00 0 SO S. 0555 S 9 @9 S* S. 0* a. @055 ~0
2. 9. 0 SS@ S S S 9 S S. S. \\melb~l\home$\MCooper\Keep\Speci\PoNo753.Dowell dc 30/06/99 23 fitted said reveal cover has the appearance of extending from said extruded window frame or door frame. 3. An extruded window frame or door assembly as claimed in claim 1 or claim 2 wherein said foot of the of said reveal cover extends up to either an internal wall surface of said building or up to an architrave surrounding said window frame or door frame to completely hide the reveal frame from view. 4. An extruded window frame or door assembly as claimed in any one of claims 1 to 3 wherein said reveal cover is snap lock clip-fastenable to said reveal. 5. An extruded window frame or door assembly substantially as herein described with reference to the accompanying drawings. eo.* Dated this 28th day of April 1997 DOWELL AUSTRALIA LIMITED By their Patent Attorneys 20 GRIFFITH HACK **s Fellows Institute of Patent Attorneys of Australia go o o o° H:\ale\Keep\speci\N97530 0 weellldoc 28/04/' I 24 Abstract An extruded window frame or door frame assembly is provided which has in internal reveal (115). The assembly has an extruded frame to carry a window or door, a reveal frame (11) and a reveal cover (115) which provides the internal reveal (115). The reveal frame (11) is provided with a channel (71) and the reveal frame (11) can be fastened relative to a building by fastening means (101) passing into the channel (71). The reveal cover (115) is of generally shape in transverse cross-section and a leg (123) of the "L" extends at least completely across the channel (71) to an edge face of the reveal frame (11) which is innermost of the building, and the foot (127) of the extends over that edge face of the reveal frame. The innermost face of the reveal cover (115) is provided with surfaces (121), (141, 143), (119), (137, 139) to enable clip fastening to the reveal frame (11). H:\Gale\Keep\speci\N9753.Dowell doc 28/04/9i