AU682492B2

AU682492B2 - Ceiling panel trimmer bracket

Info

Publication number: AU682492B2
Application number: AU60632/94A
Authority: AU
Inventors: Brad Frank Golledge
Original assignee: B H P STEEL JLA Pty Ltd; BHP Steel JLA Pty Ltd
Current assignee: BHP Steel JLA Pty Ltd
Priority date: 1993-04-28
Filing date: 1994-04-21
Publication date: 1997-10-09
Anticipated expiration: 2014-04-21
Also published as: AU6063294A

Description

1 P/00/011 Regulation 3.2

AUSTRALIA

Patents Act 1990

ORIGINAL

COMPLETE SPECIFICATION STANDARD PATENT Invention Title: "CEILING PANEL TRIMMER BRACKET" oo The following statement is a full description of this invention, including the best method of performing it known to the Applicant:- 9** This invention relates to the fixing of ceiling panels, for example plasterboard panels. Such panels may be fixed directly to the undersides of roof trusses in single storey buildings or the undersides of upper floor bearers in multi-storey buildings.

0 99 In either event, special arrangements may be required to secure the edges of the panels where they meet the building walls, and the present invention provides a trimming bracket for that purpose.

Brackets according to the invention are intended primarily for use in buildings having metal wall frames, but in preferred embodiments are also able to be used in relation to timber framed buildings.

The invention consists in a ceiling panel trimmer bracket comprising a vertical sheet metal body; a forwardly directed adhesive retained flange projecting in a substantially horizontal plane from said body; shelf means on said body spaced below said flange for the support of a panel edge; and fixing means to secure said body to a top wall plate of a wall frame, wherein the sheet metal body comprises a back plate having top and bottom edges, and the adhesive retainer flange projects from the top edge of the back plate, and wherein the fixing means comprise a rearwardly directed lug projecting from the top edge of the back plate, and a manually foldable tab integral with the back plate and united therewith along a fold line spaced upwardly from the bottom edge of the back plate.

In preferred embodiments the sheet metal body comprises a back plate having top and bottom edges, the adhesive retainer flange projects from the top edge of the back plate, the shelf means comprise a manually unfoldable tongue integral with the back plate and united therewith along a fold line spaced downwardly from the top edge of the back plate, and the fixing means comprise a rearwardly directed lug projecting from the top edge of the back plate, and a manually foldable tab integral t with the back plate and united therewith along a fold line spaced upwardly from the bottom edge of the back plate.

ECy way of example, an embodiment of the above described invention is described in more details hereinafter with reference to the accompanying drawings.

Figure 1 is an end elevation of a metal wall top plate.

to 0.

Figure 2 is a side elevation of a trimmer bracket according to the invention, S* adapted to be used in conjunction with the top plate of figure 1.

Goose: 0 Figure 3 is a perspective view of the bracket of figure 2.

~I I~ P A 3 The wall plate illustrated by figure 1 is a conventional item. It is essentially an inverted channel, comprising a web 4 and flanges 5, that has been cold-formed from a steel strip. It is preferably galvanised or similarly coated. In use, it extends horizontally along the top of a wall frame. That frame further comprises upright studs with their top ends fitting between the flanges 5 and abutting the underside of the web 4.

The studs may be fastened to the plate by tabs projecting from the end of the studs through slots piercing the floors of elongated depressions 6 formed in the web 4. On assembly, those tabs are bent over so as to 10 lie within the depressions 6.

0 The trimmer bracket illustrated by figures 2 and 3 is adapted for p use in conjunction with the wall plate of figure 1. It is cold-formed from a single piece of steel sheet and comprises a back plate 7 having top and bottom edges; a forwardly directed adhesive retainer flange 8 15 projecting from the top edge of the back plate 7; a rearwardly directed, bracket supporting lug 9 projecting from the top edge of the back i plate 7; a manually unfoldable pernel shelf comprising a tongue o*0o integral with th back plate 7 and united therewith along a fold line 11 spaced downwardly from the top edge of the back plate 7; and a 20 manually foldable bracket retainer tab 12 integral with the back plate 7 and united therewith along a junction line spaced upwardly from the bottom edge of the back plate 7.

In use, the bracket may be applied to one side of the wail plate so that ribs 13 in the bracket back plate may contact one of the flanges with the lug 9 resting upon the top face of the web 4. It will be seen that the lug 9 has an end rib 14 formed in it, that is adapted to enter onej^ the depressions 6. Furthermore the ribs 13 enable the upper part of the back plate to clear a relief rib 15 of the kind conventionally provided at I 4 the junctions of the flanges 5 and web 4 to ensure that the edges of the wali studs do not bear unduly upon those junctions. Having been so positioned the bracket may be better secured in place by the installer bending the tab 12 backwards and upwards about its junction line so as to embrace a part of the bottom margin of a flange The flange 8 may then be coated with adhesive and the edge of a ceiling panel brought into position in contact with the underside of the flange 8. The tongue 10 may then be bent upwards to come against the underside of the panel for its final securement.

10 The flange 8 may be fluted as shown so that it may better retain a quantity of adhesive as that adhesive sets.

For preference the back plate 7 is pierced by a plurality of fastener clearance holes 16, whereby the bracket may be nailed to a timber plate if such be used at a particular building site.

a 15 As a general rule, brackets according to the invention are hidden in the finished building by the conventional cornice moulding normally pr(,.ided at the junction of the ceiling and wall cladding.

I

Claims

1. A ceiling pane! trimmer bracket comprising a vertical sheet metal body; a forwardly directed adhesive retainer flange projecting in a substantially horizontal plane from said body; shelf means on said body spaced below said flange for the support of a panel edge; and fixing means to secure said body to a top wall plate of a wall frame, wherein the sheet metal body comprises a back plate having top and bottom edges, and the adhesive retainer flange projects from the top edge of the back plate, and wherein the fixing means comprise a rearwardly directed lug projecting from the top edge of the back plate, and a manually foldable tab integral with the back plate and united therewith along a fold line spaced upwardly from the bottom edge of the back plate, *i

2. A trimmer bracket according to claim 1 wherein the shelf means comprise a manually foldable tongue integral with the back plate and united oil• therewith along a fold line spaced downwardly from the top edge of the back plate. got

3. A trimmer bracket according to any one of claims 1 and 2 wherein the back plate is pierced by a plurality of nail clearance holes. *so

4. A trimmer bracket according to any one of the preceding claims o:oe* wherein the retainer flange is fluted to augment its ability to retain adhesive. 123*~AMD 13F\B N-" i 6 A ceiling panel trimmer bracket substantially as described herein with reference to figures 2 and 3 of the accompanying drawings. Applicant BH.P. STEEL (JLA) PTY. LTD, Date 10 July 1997 By its Patent Attorneys CARTER SMITH BEADLE 0. 0 A* M ABSTRACT A ceiling panel trimmer bracket comprises a sheet metal back plate adapted to be applied against a flange of sheet metal wall top plate (fig. a fluted adhesive retainer flange projecting from the top edge of the back adapted to overlie and be adhered to a margin of a ceiling panel, a tongue (10) integral with the back plate and united therewith along a fold line (11) spaced downwardly from the top edge of the back plate about which it may be unfolded to form a supporting shelf for the ceiling panel, a rearwardly directed lug (14) projecting from 10 the top edge of the back plate adapted to rest upon the web of the wall plate and a tab (12) united with the back plate along a fold line spaced upwardly from the bottom edge of the back plate about which it may be folded to embrace the bottom margin of the plate flange 15 Figure 3.

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