AU2001100293A4

AU2001100293A4 - A security wing and method of manufacture thereof

Info

Publication number: AU2001100293A4
Application number: AU2001100293A
Authority: AU
Inventors: Craig French; Leslie James Thomas
Original assignee: Australian Aluminium Distrib Services Pty Ltd
Current assignee: AUSTRALIAN ALUMINIUM DISTRIBUTION SERVICES Pty Ltd
Priority date: 2001-08-21
Filing date: 2001-08-21
Publication date: 2001-11-15
Anticipated expiration: 2009-08-21

Description

P/00/012 Regulation 3.2

AUSTRALIA

Patents Act 1990

ORIGINAL

COMPLETE SPECIFICATION INNOVATION PATENT Invention Title: "A SECURITY WING AND METHOD OF MANUFACTURE THEREOF" The following statement is a full description of this invention, including the best method of performing it known to us: 2

TITLE

"A SECURITY WING AND METHOD OF MANUFACTURE THEREOF FIELD OF THE INVENTION THIS INVENTION relates to a security wing and method of manufacture thereof. In particular, the invention relates to producing a security wing having louvers using a traditional security wing frame member. However, it should be appreciated that other security wing frame members may be used.

BACKGROUND OF THE INVENTION Metal security grille doors and windows have become very popular due to their strength, their low cost and their ability to allow ventilation into a dwelling.

Security doors and windows are normally constructed from four frame members and a security grille. Each frame member includes a box section connected to a U-shaped channel, as shown in Australian Design Registration Nos 125831 and 134283. The security grille is placed within the U-shaped channel of each frame member and the four frame members are secured together using fasteners to complete the security door or window.

The cost of a security door or window can be kept relatively low as the frame members and security grilles are mass produced. Many fittings, including latches, locking arrangements, hinges and rollers for slidable mounting, are readily available for existing frame members.

However, the security doors and windows that use these frame members 3 have been limited to use with a security grille.

OBJECT OF THE INVENTION The object of this invention is to overcome or alleviate one or more of the above disadvantages or provide the consumer with a useful or commercial choice.

SUMMARY OF THE INVENTION Accordingly, in one form, though not the only or broadest form, the invention relates to a security wing comprising: a frame having at least a pair of spaced apart frame members, each frame member having a body portion connected to a channel; a pair of support members, each support member having an engagement portion and mounting portion; and a plurality of louvres extending between and connected to said mounting portions; wherein said engagement portions engage with respective channels to secure said louvres between said spaced apart frame members.

The frame may comprise four frame members.

The frame members may be uniform cross-section through their length.

The body portion may be a box-shaped section.

The channel may be a U-shaped channel. The channel may be spaced from the body portion via a web.

The support member may be uniform transverse crosssection throughout its length.

The mounting portion and engagement portion may be integrally formed.

The engagement portion may prevent the support member moving relative to the frame member. The engagement portion may be placed over and/or within the channel. The engagement portion may be a pair of flanges that locates on the outside of the channel. Alternately, the engagement portion may be a pair of flanges that locates within the channel. Still alternately, the engagement portion may be a pair of flanges with one flange located within the channel and one flange located outside the channel.

A projection may be located on the engagement portion to keep the support member in contact with the channel.

The mounting portion may provide a substantially flat surface for mounting the louvres. The mounting portion may be a plate.

A face portion may be provided on the support member.

The face portion may be a face plate.

The louvres may be mounted to the mounting portions so the louvres are fixed or rotatable.

In another form, though not the only or broadest form, the invention resides in a method of manufacturing a security wing, including the steps of: making a frame having at least a pair of spaced apart frame members, each frame member having a body portion connected to a channel; joining a plurality of louvres to a pair of support members, each support member having an engagement portion and mounting portion; and engaging said engagement portions with respective channels to secure said louvres between said spaced apart frame members.

In yet another form, the invention resides in a support member for adapting a security frame member to mounting a plurality of Iouvres, wherein said frame member has a body portion connected to a channel, said support member comprising: a mounting portion for connection with said plurality of louvres; and an engagement portion in the form of a pair of flanges adapted for engagement with respective webs of the channel of said security frame member.

The support member optionally includes features as herein before described for adapting frame members to mount closures other than grilles.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a security window according to an embodiment of the invention.

FIG. 2 is a transverse cross-sectional view of the security wing of FIG. 1.

FIG. 3 is transverse cross-sectional view of a support member detached to a frame member.

FIG. 4 is a transverse cross-sectional view of a support member attached to a frame member.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIGS. 1 and 2 show a security window 10 comprising a frame 20, support members 30 and 31 and louvres The frame 20 is constructed from four frame members 21, 22, 23 and 24. Each frame member comprises a box-shaped section to which is joined a U-shaped channel 26 via a web 27 shown more clearly in FIG. 3 and FIG. 4. The frame members 21, 22, 23 and 24 are joined to each other at respective ends using suitable fasteners, such as internal stakes and rivets (not shown).

The support member of the embodiment is an extruded section that is constructed from a suitable material, such as steel or aluminium. Each support member 30 and 31 comprises a mounting web 32 having a pair of depending outer flanges 33 and 34 and a pair of inner flanges 35 and 36. A face plate 37 also depends from the mounting web 32. A barbed projection 38 is located adjacent the end of outer flange 34.

The louvres 40 are rotatably mounted to the mounting web of each of the support members via respective shafts 41. The louvres are constructed of metal, such as aluminium or steel. An actuator rod (not 7 shown) is connected to the Iouvres and can be reciprocated to rotate louvres between an open position and a closed position.

The security window 10 is constructed by rotatably mounting the louvres 40 to the mounting webs 32 of the support members 30 and 31. The support members 30 and 31 are then placed on respective frame members 22 and 24. The support members 30 and 31 have been designed so that the outer flanges 33 and 34 engage with the outside of the U-shaped channel 26. The barbed projection 38 engages with an underside of the U-shaped channel 26 to hold the support portion on the U-shaped channel 26. The inner flanges 35 and 36 engage with the inside of the U-shaped channel to prevent transverse movement of the support members 30 and 31.

The outer flange 33 and face plate 37 are of the same length for aesthetic purposes. The outer flange 33 is of increased width when compared to outer flange 34 so as to inhibit entry through the security window by removing the louvres. A fastener, such as rivet 39, can optionally be placed through the outer flange 33 and frame web 27.

The advantage of this security wing is that frame members 21, 22, 23 and 24 that are currently used to produce security wings that have security grilles can be used to conveniently produce security wings that have louvres. The support members have been designed to provide the necessary security requirements to use louvres and allow frame members of standard shape and associated fittings to be used.

It should be appreciated that various other changes and modifications may be made to the embodiment described without departing from the spirit or scope of the invention.

Claims

1. A security wing comprising: a frame having at least a pair of spaced apart frame members, each frame member having a body portion connected to a channel; a pair of support members, each support member having an engagement portion and mounting portion; and a plurality of louvres extending between and connected to said mounting portions; wherein said engagement portions engage with respective channels to secure said louvres between said spaced apart frame members.

2. The security wing of claim 1, wherein the engagement portion prevents the support member moving relative to the frame member.

3. The security wing of claim 1, wherein the engagement portion is a pair of flanges that is preferably integrally formed with the mounting portion.

4. A method of manufacturing a security wing, including the steps of: making a frame having at least a pair of spaced apart frame members, each frame member having a body portion connected to a channel; joining a plurality of Iouvres to a pair of support members, 9 each support member having an engagement portion and mounting portion; and engaging said engagement portions with respective channels to secure said louvres between said spaced apart frame members. A support member for adapting a security frame member to mounting a plurality of louvres, wherein said frame member has a body portion connected to a channel, said support member comprising: a mounting portion for connection with said plurality of Iouvres; and an engagement portion in the form of a pair of flanges adapted for engagement with respective webs of the channel of said security frame member. DATED this Twenty-first day of August 2001. PREDATOR-GUARD INDUSTRIES PTY LTD By its Patent Attorneys FISHER ADAMS KELLY