AU596255B2

AU596255B2 - Security device

Info

Publication number: AU596255B2
Application number: AU83014/87A
Authority: AU
Inventors: Edwin Lindsay Lange
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-12-23
Filing date: 1987-12-23
Publication date: 1990-04-26
Anticipated expiration: 2007-12-23
Also published as: AU8301487A

Description

jCOMPLETE AFTER PROVISIONAL SPECIFICATION NOS. PH 9655 AUixALIA PATENTS ACT 1952 AND Pi 358 COMPLETE SPECIFICATION (ORIGINAL) f 111 FORO.F.CUCLSEor FOR OFFICE USE: Application Number: Lodged: Complete Specification Lodged: Accepted: Published: Priority: Related Art: left I tV; t I Class Int. Class ll- c.

4 f z Name of Applicant(s): A drtess of Applicant(s): t A ctual Inventor(s): C C S 1 Adcdress fo Applicane: KENNETH GORDON KAVANAGH and EDWARD IAN KAVANAGH 121 Curtin Avenue Cottesloe WESTERN AUSTRALIA

AUSTRALIA

19 Lennox Road Thornlie 6011 WESTERN AUSTRALIA

AUSTRALIA

6108 respectively EDWIN LINDSAY LANGE Kelvin Lord Co., 4 Douro Place, WEST PERTH, Western Australia 6005.

Complete Specification for the invention entitled: "SECURITY

DEVICE"

The following statement is a full description of this invention, including the best method of performing it known to me/ us 2 The present invention relates to a security device for a sliding window or door and frame assembly, a sliding window or door and frame assembly provided with a security device, a method of securing a sliding window or door in a sliding window or door and frame assembly and a method of instruction for securing a sliding window or door i. a sliding window or door and frame assembly.

Various security means have been devised to prevent would-be intruders from gaining unauthorized access to buildings by interfering with conventional locking mechanisms on horizontally sliding window or door assemblies.

Such security means have been directed to prevent the window or door being slid horizontally in its frame, even if the locking mechanism is somehow interfered with and by-passed.

However, such security means do not deal with the problem of preventing the sliding window or door being moved o* upwardly and manoeuvred out of its frame.

The present invention addresses the latter problem.

In accordance with a first aspect of the present invention there is provided a security device for a sliding window or A- r door and frame assembly, said sliding window or door 2 including a border-frame around its periphery and being slidable between an open and a closed position in said frame, said frame comprising upper and lower channel means 9#49 in which said sliding window or door is slidable, said upper channel means comprising an outer depending portion, li- 1; 1= II ran~cza~ -3 an inner depending portion and an upper frame portion, said security device comprising: a projecting member having a shaft, a head located at one end of said shaft defining a circumferential groove such that when said security device is affixed to the front face of said border-frame of said sliding window or door beneath the edge of said outer depending portion said security device projects outwardly from said border-frame with said circumferential groove positioned adjacent to the lower edge of said outer depending portion of said upper channel means to prevent removal of said sliding window or door from said frame.

In accordance with a second aspect of the present invention there is provided a security device for a sliding window or door and frame assembly, said sliding window or door including a border-frame around its periphery and being .tes slidable between an open and a closed position in said 606q rframe, said frame comprising upper and lower channel means in which said sliding window or door is slidable, said upper channel means comprising an outer depending portion, an inner depending portion and an upper frame portion, said security device comprising: CC a projecting member having a shaft, a head located at one end of said shaft and a collar arranged to pass over said shaft and abut said head, said collar defining a circumferential groove such that when said security-device Vc is affixed to the front face of said border-frame of said sliding window or door beneath the edge of said outer depending portion said security device projects ,ii

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3a outwardly from said border-frame with said circumferential groove positioned adjacent the the lower edge of said outer depending portion of said upper channel means to prevent removal of said sliding window or door from said frame.

In accordance with a third aspect of the present invention there is provided a method of securing a sliding window or door in a respective frame of a sliding window or door and frame assembly, said sliding window or door being provided with a border-frame around the periphery of said window or door and slidable between an open and a closed position in said frame, said frame defining upper and lower channel means in which said sliding window or door is slidable, said upper channel means comprising an outer depending portion, an inner depending portion and an upper frame portion, said method comprising: c positioning at least one stop means to the front face of said border-frame of said sliding window or door beneath a a lower edge of said outer depending portion of said upper channel; affixing said stop means on said border-frame at an upper region of said border-frame such that said stop means projects outwardly from said border-frame beneath said outer depending portion of said upper channel means; said stop means having a shaft and a head defining a circumferential groove located at one end of said shaft, said circumferential groove positioned adjacent to the lower edge of said outer depending portion of said upper channel means to prevent removal of said sliding window or 3b door from said frame.

In accordance with a fourth aspect of the present invention there is provided method of securing a sliding window or door in a respective frame of a sliding window or door and frame assembly, said sliding window or door being provided with a border-frame around the periphery of said window or door and slidable between an open and a closed position in said frame, said frame defining upper and lower channel means in which said sliding window or door is slidable, said upper channel means comprising an outer depending portion, an inner depending portion and an upper frame portion, said method comprising: positioning at least one stop means to the front face of said border-frame of said sliding window or door beneath get( 15 a lower edge of said outer depending portion of said upper channel; affixing said stop means on said border-frame at an I 64 upper region of said border-frame such that the stop means 1 4 .Q "So projects outwardly from said border-frame beneath said outer depending portion of said upper channel means; said stop means having a shaft, a head located at one end of .Lt C g said shaft and a collar arranged to pass over said shaft tett 4 C C and abut said head, said collar defining a circumferential .e groove positioned adjacent to the lower edge of said outer depending portion of said upper channel means to prevent removal of said sliding window or door from said frame.

In accordance with a fifth aspect of the present invention there is provided a sliding window or door and frame ~7 rrr V 3c assembly comprising: a frame, a sliding window or door with a border frame around its periphery slidably mounted in said frame between an open and a closed position; said frame comprising upper and lower channel means in which said sliding window or door is slidable; said upper channel means comprising an outer depending portion, an inner depending portion and a lower frame portion, wherein at least one stop means is affixed to the front face of said border-frame of said sliding window or door, said stop means having a shaft and a head defining a circumferential groove located at one end of said shaft; said stop means positioned on said border-frame at an upper region of said border-frame whereby said stop means projects outwardly from said border-frame immediately S beneath said outer depending portion of said upper channel t means with said circumferential groove positioned adjacent St to the lower edge of said outer depending portion of said 6 S upper channel means to prevent removal of said sliding window or door from said frame.

In accordance with a sixth aspect of the present invention j there is provided a sliding window or door and frame c assembly comprising: I- to a frame, a sliding window or door with a border-frame around its periphery slidably mounted in said frame between an open and a closed position; said frame comprising upper and lower channel means in which said sliding window or door is slidable; -I r 3d said upper channel means comprising an outer depending portion, an inner depending portion and a lower frame portion; wherein at least one stop means is affixed to the front face of said border-frame of said sliding window or door, said stop means having a shaft, a head located at one end of said shaft and a collar arranged to pass over said shaft and abut said head, said stop means positioned on said border-frame at an upper region of said border-frame whereby said stop means projects outwardly from said border-frame immediately beneath said outer depending portion of said upper channel means with said circumferential groove positioned adjacent to the lower edge of said outer depending portion of said upper channel means to prevent removal of said sliding window or door 15 from said frame.

The present invention will hereinafter be described with particular reference to a sliding window and frame assembly. However, it will be understood that the present t e 2~ -4invention is of equal applicability to a sliding door and frame assembly.

The present invention will now be described, by way of example, with reference to the accompanying drawings, wherein: Figure 1 is a perspective view of a first embodiment of the present invention of a sliding window and frame assembly having a security device provided therein, with the sliding, window in the closed position; Figure 2 is an elevation view of the first embodiment shown in Figure 1; Figure 3 is a sectional view thrcugh the line A-A of Figure 2; j Figure 4 is a perspective view of a second embodiment of the present invention of a sliding window and frame assembly having a security device provided therein, with the sliding window in the closed position; Figure 5 is an elevation view of the second embodiment shown in Figure 3; Figure 6 is a sectional view through the line B-B of Figure Figure 7 is an elevation view of a third embodiment of the .4 present *invention of a sliding window andi frame assembly having a security device provided therein, with the sliding window in the closed position; Figure 8 is an elevation view of the third embodiment shown in Figure 7, but with the sliding window in the fully open position; Figure 9 is a detail of the encircled portion of Figure 8; Figure 10 is a sectional view through the line C-C of Figure 7; Figure 11 is a first perspective view of a first embodiment of the security device in accordance with the present invention; Figure 12 is a second perspective view of the security device shown in Figure 11; Figure 13 is an elevation view of the security device shown in Figure 11; Figure 14a is an elevation view of a second embodiment of the security device in accordance with the present invention; and Figure 14b is a perspective view of the collar of the security device shown in Figure 14a.

In Figures 1 and 2, there is shown a sliding window and frame asembly 10 comprising a sliding window 12 and frame j I 14.

The sliding window and frame assembly 10 may be fixed in a t t, wall structure of a building with the views shown in Figures i 20 1 and 2 being on the inside of the building.

The sliding window 12 comprises a glass pane 16 surrounded by a border-frame 18.

The frame 14 comprises channel means in which the sliding window 12 is slidable and side frame members 20 and 22.

The channel means comprises a pair of upper channels 24 and 26 and a pair of lower channels 28 and 30. The upper channel 24 is formed by the outer depending portion 32 of the frame 14, the inner depending portion 34 of the frame 14 and part of the upper portion 36 of the frame 14. The upper -6channel 26 is formed by the outer depending portion 38 of the frame 14, the inner depending portion 34 of the frame 14 and part of the upper portion 36 of the frame 14. The lower channel 28.is formed by the outer upstanding portion 40 of the frame 14, the inner upstanding portion 42 of the frame 14 and part of the lower portion 44 of the frame 14. The lower channel 30 is formed by the outer upstanding portion 46 of the frame 14, the inner upstanding portion 42 of the frame 14 and part. of the lower portion 44 of the frame 14.

A fixed window 48 is contained in the frame 14. The fixed window 48 comprises a glass pane 50 surrounded by a border-frame 52. The border-frame 52 of the fixed window 48 is fixed in the side frame member 22 and the upper channel 26 and lower channel 30. Thus, only an upright portion 54 of the border-frame 52 remains unfixed. This is best seen in Figures 2 and 3.

The sliding window 12 is slidable in the upper channel 24 and lower channel 28.

A gap 56 exists between the top of the upper portion 58 of the border-frame 18 and the roof of channel 24. This is best seen in Figure 3.

The border-frame 18 of the sliding window 12 is provided with a handle 60 which also acts as a locking mechanism, when the sliding window 12 is in its closed position, by engaging with the unfixed upright portion 54 of the border-frame 52. The handle 60 is provided on the upright portion 62 of the border-frame 18.

.The sliding window and frame assembly 10 further comprises a safety device in the form of a stop 64.

7 The stop 64 is mounted in or on the upper portion 58 of the border-frame 18 such that it projects from the surface of the upper portion 58 past the lower edge 66 of the outer depending portion 32. This is best seen in Figure 3.

Preferably, the stop 64 is mounted in or on the upper portion 58, above the upright portion 62 of the border-frame 18, and as close as possible to the lower edge 66 of the outer depending portion 32. A small clearance is provided between the top of the stop 64 and the lower edge 66 of the 4ol outer depending portion 32 to allow the sliding window 12 to slide freely in the upper channel 24 and the lower channel 28.

.',However, the stop 64 may be mounted at any location along the length of the upper portion 58.

15 The manner of operation of the sliding window and frame assembly 10 shown in Figures 1 to 3 will now be described.

The sliding window 12 is able to slide in the upper channel 24 and lower channel 28 of the frame 14 in conventional manner.

However, due to the presence of the stop 64 in the sliding window and frame assembly 10, it is not possible to remove the sliding window 12 from the frame 14.

This is because, if the sliding window 12 is to be removed from the frame 14, the upper portion 58 must first be moved upwardly into the gap 56 to expose the bottom of the border-frame 18 from the lower channel 23., However, any upward movement of the sliding window 12 causes the stop 64 to engage the lower edge 66 of the outer depending portion 32 of the frame 14. Such engagement prevents any further 8upward movement of the sliding window 12.

Thus, removal of the sliding window 12 from the frame 14 is prevented since the bottom of the frame 14 cannot be exposed from the lower channel 28 since the stop 64 prevents the upper portion 58 being moved upwardly into the gaps 56.

In Figures 4 to 6, there is shown a sliding window and frame assembly 70. The sliding window and frame assembly 70 is identical to the sliding wirmc'ow and frame assembly 10 shown in Figures 1 to 3, except for the location of the stop 64.

Accordingly, the same reference numbers are used in Figures 4 to 6, as are used in Figures 1 to 3, to identify the same ~i 4 components.

The preceding description of the sliding window and frame assembly 10 applies equally to the sliding window and frame assembly 70, except in relation to the location of the stop 64. Such description shall not be here repeated, but the different location of the stop 64 in the sliding window and frame assembly 70 will be now described.

safety device in the form of a stop 64.

The stop 64 is mounted in or on the outer depending portion 32 of the frame 14 such that it extends into the gap 56 in the upper channel 24, above the top of the upper portion 58 of the border-frame 18. This is best seen in Figure 6.

Preferably, the stop 64 is mounted in or on the outer depending portion 32 above the upright portion 62 of the border-frame 18, when the sliding window is in the closed position, and as close as possible to the top of the upper portion 58 of tha border frame 18. A small clearance is 1 9 provided between the top of the upper portion 58 of the border-frame 18 and the bottom of the stop 64 to allow the sliding window 12 to slide freely in the upper channel 24 and the lower channel 28.

However, the stop 64 may be mounted at any location along the length of the outer depending portion 32 that is above the upper portion 58 of the border-frame 18 when the sliding window 12 is in the closed position.

The manner of operation of the sliding window and frame r, 10 assembly 70 shown in Figures 4 to 6 will now be described.

t* However, due to the presence of the stop 64 in the sliding window and frame assembly 70, it is not possible to remove 4. t the sliding window 12 from the frame 14.

This is because, if the sliding window 12 is to be removed from the frame 14, the upper portion 58 must first be moved rirt upwardly into the gap 56 to expose the bottom of the border-frame 18 from the lower channel 28. However, any C upward movement of the sliding window 12 causes the top of the upper portion 58 of the border frame 18 to engage the portion of the stop 64 that extends into the gap 56 in the upper channel 24, above the top of the upper portion 58.

Such engagement prevents any further upward movement of the sliding window 12.

Thus, removal of the sliding window 12 from the frame 14 is prevented since the bottom of the frame 14 cannot be exposed from the lower channel 28 since the stop. 64 prevents the ir 1: 1~ I- I

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upper portion 58 being moved upwardly into the gap 56.

In Figures 7 to 10, there is shown a sliding window and frame assembly 80. The sliding window and frame asembly is identical to the sliding window and frame asembly shown in Figures 1 to 3, except for the location of the stop 64. Accordingly, the same reference numbers are used in Figures 7 to 10 to identify the same components.

The preceding description of the sliding window and frame assembly 10 applies equally to the sliding window and frame assembly 80, except in relation to the location of the stop 64. Such description shall not be here repeated, but the different location of the stop 64 in the sliding window and frame assembly 80 will now be described.

The sliding window and frame assembly 80 further comprises a safety device in the form of a stop 64.

The stop 64 is mounted in or on the roof of the upper channel 24 such that it extends into the gap 56 in the upper channel 24 above the top of the upper portion 58 of the border-frame 18. This is best seen in Figure Preferably, the stop 64 is mounted in the roof of the upper channel 24 such that the horizontal distance D between the edge 68 of the border-frame 18 and the stop 64, when the sliding window is in the fully open position, is approximately 20mm. A distance D of this length allows sufficient clearance to permit the sliding window 12 to be installed in, or removed, from, the frame 14 when the sliding window is in the open position. The stop 64 is mounted in the roof of the upper channel 24 as close as possible to the top of the upper portion. A small clearance is provided i ::rl '4 S- 11 between the top of the upper portion 58 of the border-frame 18 and the stop 64 to allow the sliding window 12 to slide freely in the upper channel 24 and lower channel 28.

However, the stop 64 may be mounted at any location along the length of the roof of the upper channel 24 that is above the upper portion 58 of the border-frame 18 when the sliding window 12 is in the closed position.

The manner of operation of the sliding window and frame assembly 80 will now be described.

The sliding window 12 is able to slide in the upper channel 24 and lower channel 28 in conventional manner.

When it is desired to remove the sliding window 12 from the frame 14, the sliding window is first slid into the open position such that the edge 68 of the borde '-frame 18 has passed the stop 64 as shown in Figures 8 and 9.

The sliding window 12 may then be removed from the frame 14 by moving the upper portion 58 upwardly into the gap 56 to tc t expose the bottom of the frame 14 from the lower channel 28.

However, due to the presence of the stop 64 in the sliding window and frame asembly 80, it is not possible to remove the sliding window 12 from the frame 14 when the upper I portion 58 is beneath the stop 64.

This is because, if the sliding window 12 is to be removed from the frame 14, the upper portion 58 must first be moved upwardly into the gap 56 to expose the bottom of the border-frame 18 from the lower channel 28. However, when the sliding window 12 is in the closed position, any such upward movement of the sliding window 12 causes the top of the upper portion 58 of the border-frame 18 to engage the il; I;- 12 stop 64 in the gap 56 in the upper channel 24. Such engagement prevents any further upward movement of the sliding window 12.

Thus, removal of .the sliding window 12 from the frame 14 is prevented, when the sliding window 12 is in the closed position, since the bottom of the border-frame 18 cannot be exposed from the lower channel 28 since the stop 64 prevents the upper portion 58 being moved upwardly into the gap 56.

The security device may comprise stop means in the form of a projecting member.

't Accordingy, the security device may be in the form of a t screw of suitable size.

trr In the first embodiment, shown in Figures 1 to 3, such a t r r screw could be located in position by first drilling a hole, at the desired location, in the upper portion 58 of the border-frame 18 and then inserting the screw into the [drilled hole.

In the second embodiment, shown in Figures 4 to 6, such a 9, a a. screw could be located in position by first drilling a hole, 20 at the desired location, in the outer depending portion 32 of the frame 14 and then inserting the screw into the a\J drilled hole.

In the third embodiment, shown in Figures 7 to 10 such a screw could be located in position by first drilling a hole, at the desired location, in the roof of the upper channel 24 and then inserting the screw into the drilled hole. When the screw is located at the position shown in Figures 7 to a distance D of 20mm allows sufficient clearance for a drill to be used to drill a hole in the roof of the upper 13 channel 24.

In each of the above embodiments the screw is inserted into the hole to the extent required.

The security device may be in the form of a screw 90 as shown in Figures 11 to 13.

In Figures 11 to 13 there is shown a security device in the form of a screw 90 comprising a threaded shaft 92 and a head 94.

The head 94 is provided with a circumferential groove 96 formed between two flange ends 98.

r:' t A slit 100 is formed in the head 94 to acconmmodate a screw E it? driver.

t When the screw 90 is used as the stop 64 in the first embodiment shown in Figures 1 to 3, the groove 96 engages with the lower edge 66 of the outer depending portion 32 when the sliding window 12 is attempted to be moved upwardly Ste in the frame 14. The groove 96 thus provides a secure Lt .engagement between the lower edge 66 and the screw A second embodiment of the security device is shown in 20 Figures 14a and 14b.

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61 In Figures 14a and 14b there is shown a security device in I the form of a screw 102 and collar 104.

SThe screw 102 comprises a threaded shaft 106 and a head 108. A slit 110 is formed in the head 108 to accommodate a screwdriver.

The collar 104 is provided with a circumferential groove 112 formed between two flange ends 114 and a central bore 116.

i: The collar 104 can pass over the threaded shaft 106 of the screw 102 via the bore 116.

.1 i.- 14 The groove 112 of the collar 104 operates in a similar manner to the groove 96 of the security device shown in Figures 11 to 13, in relation to its operation in the first embodiment shown in Figures 1 to 3.

Whilst two embodiments of the security device have been described with reference to Figures 11 to 13 and Figures 14a and 14b, respectively, the form of the security device is not to be considered as being restricted to these.

The security device may be of any suitable form which, when positioned in a sliding window or door and frame assembly, prevents the window or door from being removed from its respective frame at least when the window or door is in the closed position.

The security device may be mounted on or in the sliding window or door and frame assembly by any suitable method, e.g. by adhesive, welding or forming the security device integral with the sliding window or door and frame assembly during the manufacturing stage, along with the method of inserting it into a drilled hole as hereinbefore described.

C t 20 Whilst the preceding description of the embodiments has described the use of only a single security device in each embodiment, it will be understood that any desired number may be used. With most situations two security devices, positioned apart from one another, on the top portion 58 of the border-frame 18, outer depending portion 32 and/or inside the upper channel 24, as the case may be, are found satisfactory.

The present invention may be used in conjunction with a length of dowel, or the like, placed in the channel lower s n k -U il~ iiq i- I .i i.; I 15 channel 28, adjacent the fixed window 48, when the sliding window 12 is in the closed position. The dowel would be of a length such that it substantially abuts the edge of the upright portion 62 of the border-frame 18 and the internal edge of the side frame member 22 when it is placed in the lower channel 28.

The dowel, or the like, prevents the sliding window 12 being slid in the frame 12 when the sliding window 12 is in the closed position, even if the locking mechanism of the handle 60 is interfered with or otherwise non-operative.

The dowel, or the like, may be employed in a similar manner in a sliding door and frame assembly.

The present invention prevents the window or door being removed from the frame of a sliding window or door and frame assembly.

Thus, combining the two systems provides added security to a slidi.ng window or door and frame assembly.

Modifications and variations such as would be apparent to a skilled addressee are deemed within the scope of the present 20 invention ft a 4r r* ,v 4 tr I C Ct C r V C

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Claims

1. A security device for a sliding window or door and frame assembly, said sliding window or door including a border-frame around its periphery and being slidable between an open and a closed position in said frame, said frame comprising upper and lower channel means in which said sliding window or door is slidable, said upper channel means comprising an outer depending portion, an inner depending portion and an upper frame portion, said security device comprising: a projecting member having a shaft, a head located at one end of said shaft defining a circumferential gr'oove such that when said security device is affixed to the front face of said border-frame of said sliding window or door beneath the edge of said outer depending portion said security device projects outwardly from said border-frame with said circumferential groove positioned adjacent to the lower edge of said outer depending portion of said upper channel means to prevent removal of said sliding window or door from said frame.

2. A security device for a sliding window or door and frame assembly in accordance with Claim 1, wherein said security device is affixed to said border-frame so that it is positioned near the corner of said border-frame which is 25 nearest the mid region of said frame when said sliding window or door is in said closed position.

3. A security device for a sliding window or door and frame assembly, said sliding window or door including a 1 1 1 8 p 17 border-frame around its periphery and being slidable between an open and a closed position in said frame, said frame comprising upper and lower Thannl means in which said sliding window or door is slidable, said upper channel means comprising an outer depending portion, an inner depending portion and an upper frame portion, said security device comprising: a projecting member having a shaft, a head located at one end of said shaft and a collar arranged to pass over said shaft and abut said head, said collar defining a circumferential groove such that when said security device is affixed to the front face of said border-frame of said sliding window or door beneath the edge of said outer depending portion said security device projects outwardly from said border-frame with said circumferential groove positioned adjacent to the lower edge of said outer depending portion of said upper channel means to prevent removal of said sliding window or door from said frame. S4. A security device for a sliding window or door and frame assembly in accordance with claim 3, wherein said security device is affixed to said border-frame so that it is positioned near the corner of said border-frame which is nearest the mid region of said frame when said sliding window or door is in said closed position.

5. A method of securing a sliding window or door in a respective frame of a sliding window or door and frame S assembly, said sliding window or door being provided with a border-frame around the periphery of said window or door FA 18 and slidable between an open and a closed position in said frame, said frame defining upper and lower channel means in which said sliding window or door is slidable, said upper channel means comprising an outer depending portion, an inner depending portion and an upper frame portion, said method comprising: positioning at least one stop means to the front face of said border-frame of said sliding window or door beneath a lower edge of said outer depending portion of said upper channel; affixing said stop means on said border-frame at an upper region of said border-frame such that said stop means projects outwardly from said border-frame beneath said outer depending portion of said upper channel means; said stop means having a shaft and a head defining a circumferential groove located at one end of said shaft, 4 said circumferential groove positioned adjacent to the t64A lower edge of said outer depending portion of said upper channel means to prevent removal of said sliding window or SI door from said frame.

6. A method of securing a sliding window or door in accordance with claim 5, further comprising: Spositioning said stop means near the corner of said border-frame which is nearest the mid region of said frame 25 when said sliding window or door is in a closed position.

7. A method of securing a sliding window or door in a respective frame of a sliding window or door and frame assembly, said sliding window or door being provided with a l l -4 19 border-frame around the periphery of said window or door and slidable between an open and a closed position in said frame, said frame defining upper and lower channel means in which said sliding window or door is slidable, said upper channel means comprising an outer depending portion, an inner depending portion and an upper frame portion, said method comprising: positioning at least one stop means to the front face of said border-frame of said sliding window or door beneath a lower edge of said outer depending portion of said upper channel; affixing said stop means on said border-frame at an upper region of said border-frame such that the stop means projects outwardly from said border-frame beneath said r 15 outer depending portion of said upper channel means; said stop means having a shaft, a head located at one end of said shaft and a collar arranged to pass over said shaft and abut said head, said collar defining a circumferential groove positioned adjacent to the lower edge of said outer depending portion of said upper channel means to prevent removal of said sliding window or door from said frame.

8. A method of securing a sliding window or door in accordance with claim 7, further comprising: S. positioning said stop means near the corner of said border-frame which is nearest the mid region of said frame when said sliding window or door is in a closed position.

9. A sliding window to door and frame assembly comprising: a frame, a sliding window or door with a border-frame i 1 20 around its periphery slidably mounted in said frame between an open and a closed position; said frame comprising upper and lower channel means in which said sliding window or door is slidable; said upper channel means comprising an outer depending portion, an inner depending portion and a lower frame portion, wherein, at least one stop means is affixed to the front face of said border-frame of said sliding window or door, said stop means having a shaft and a head defining a circumferential groove located at one end of said shaft; said stop means positioned on said border-frame at an upper region of said border-frame whereby said stop means projects outwardly from said border-frame immediately beneath said outer depending portion of said upper channel means with said circumferential groove positioned adjacent to the lower edge of said outer depending portion of said upper channel means to prevent removal of said sliding W to window or door from said frame. A sliding window or door and frame assembly in accordance with claim 9, wherein said stop means is positioned near the corner of said border-frame which is nearest the mid region of said frame when said sliding window or door is in said closed position. 'ot 4 I

11. A sliding window or door and frame assembly comprising: 44,. a a frame, a sliding window or door with a border-frame around its periphery slidably mounted in said frame between an open and a closed position; 1 i 1 21 said frame comprising upper and lower channel means in which said sliding window or door is slidable; said upper channel means comprising an outer depending portion, an inner depending portion and a lower frame portion; wherein at least one stop means is affixed to the front face of said border-frame of said sliding window or door, said stop means having a shaft, a head located at one end of said shaft and a collar arranged to pass over said shaft and abut said head, said stop means positioned on said border-frame an an upper region of said border-frame whereby said stop means projects outwardly from said border-frame immediately beneath said outer depending portion of said upper channel means with said circumferential groove positioned adjacent to the lower edge of said outer depending portion of said upper channel means to prevent removal of said sliding window or door C from said frame. cc 1.2. A sliding window or door and frame assembly in accordance with claim 11, wherein said stop means is positioned near the corner of said border-frame which is nearest the mid region of said frame when said sliding I window is in said closed position. o 13. A security device for a sliding window or door and frame assembly substantially as hereinbefore described with reference to Figures 1-3 and 11-13 of the accompanying drawings.

14. A security device for a sliding window or door and frame assembly substantially as hereinbefore described and 1. a! ~i I i 22 illustrated in Figures 1-13 and 14a-14b of the accompanying drawings and a method of securing a sliding window or door in a respective frame of a sliding window or door and frame assembly substantially as hereinbefore described with reference to Figures 1-3 and ll-14b of the accompanying drawings A sliding window or door and frame assembly substantially as hereinbefore described with reference to Figures 1-3 and 11-14b of the accompanying drawings. DATED FEBRUARY 5, 1990 KENNETH GORDON KAVANAGH and EDWARD IAN KAVANAGH By Their Patent Attorneys '-r 15 KELVIN LORD AND COMPANY PERTH, WESTERN AUSTRALIA f tr C t I t