AU2006203119A1 - Insulated Window with Dual Blind Assembly - Google Patents

Description

21-Jul. 2006 16:23 Wallington-Dummer Sydney No -616 3 P 3 P/00/009 Regulation 3.10

AUSTRALIA

Patents Act 1990 COMPLETE SPECIFICATION Invention Title: INSULATED WINDOW WITH DUAL BLIND ASSEMBLY The invention is described in the following statement, including the best method of performing it known to us: Our Ref: 052054 COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21 Jul. 2006 16:23 Wallinston-Dumm er Sydney No.6163 P. 4 -2- 0 o INSULATED WINDOW WITH DUAL BLIND ASSEMBLY The present invention relates to window blinds and, more particularly, to blinds incorporated in double-glazed ci insulated windows.

BACKGROUND

Ci The energy efficiency of dwellings and other

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o buildings, particularly in more extreme climatic ci conditions, is greatly improved by the installation of double-glazed insulated windows. The efficiency is further enhanced if such windows are equipped with blinds to restrict the transmission of ultraviolet radiation.

It is known to incorporate blinds, such as for example "Venetian blinds" between the panes of a double-glazed window. A disadvantage of such blinds is that to be effective they have to be closed thus severely restricting the transmission of light through the window. A further disadvantage is that slat-type blinds allow considerable thermal leakage through the small gaps unavoidably left between the slats even when the blind is closed.

It is an object of the present invention to address or at least ameliorate some of the above disadvantages.

COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21.Jul. 2006 16:23 Wal I ington-Dummer Sydnev No.6163 P. -3- SBRIEF DESCRIPTION OF INVENTION (ci Accordingly, in a first broad form of the invention, S there is provided an insulated window and blinds assembly incorporating dual internal blinds disposed between a first pane and a second pane of said window; each of said internal blinds individually operable by a control system oM comprising external and internal control elements.

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a Preferably, said first pane and second pane are spaced apart by side frame elements, upper and lower frame elements and corner frame elements so as to form an hermetically sealed assembly.

Preferably, said external control elements comprise a pair of user operable slider assemblies adapted for guided vertical movement over an external surface of a first pane of said insulated window; said vertical movement guided by a guide rail along each opposing side of said insulated window.

Preferably, said slider assembly comprises a slider block and a slider casing housing said slider block; said slider casing adapted for sliding engagement with said guide rail.

Preferably, said slider block comprises a body provided with friction reducing rollers and magnetic elements.

COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21 .Ju 2006 16:23 Wal ngton-Dummer Sydney No.6163 P. 6 4 \0 Preferably, said internal control elements comprise a left hand internal slide block and a right hand internal Sslide block; each said slide block adapted for guided vertical movement between said first pane and second pane.

Preferably, each said internal slide block is provided with friction reducing rollers and magnetic elements; each O said internal slide block moving in a guide rail positioned Vo Sbetween said first and second panes along each opposing N side of said window.

Preferably, each of said user operable slider assemblies and respective ones of said internal slide blocks on said opposing sides of said window are magnetically coupled by interaction of said magnet elements disposed within said external slider assemblies and said internal slide blocks.

Preferably, each of said internal slider blocks is further provided with a double groove pulley.

Preferably, said internal control elements further comprise a left end roller block and a right hand roller block; each said roller block affixed adjacent upper ends of said internal guide rails.

COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21 Jul. 2006 16:23 Wal ington-Dummer Sydney No.6163 P. 7 5 S Preferably, said internal control elements further Ci comprise a left hand and a right hand intermediate roller S block.

Preferably, each said blind is controlled between a closed and an open state by a left hand strand and a right hand strand of a cable; each strand attached to a 0 respective left hand and right hand point on said weighted

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o trim element; said left hand point and said right hand point vertically below respective said left hand and right hand intermediate roller blocks, and wherein each of said cable strands passes through apertures in concertina elements of said blind.

Preferably, respective said left hand strand and said right hand strand of a first of said dual internal blinds pass over rollers in corresponding said intermediate roller blocks to said right hand end roller block; said left hand strand and said right hand strand passing around said double groove pulley of said right hand internal slide block to a fixed point along said side frame element; the arrangement being such that downward movement of said internal slider block causes upward retraction of said weighted trim element and gathering of said concertina configured blind.

COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21 .Jul 2006 16:24 Wal ngton-Dummer Sydney No 6163 P. 8 6- SO Preferably, at least one of said dual internal blinds (C is opaque.

Preferably, at least one of said dual internal blinds is translucent.

Preferably, at least one of said dual internal blinds n is of a material restricting thermal transmission k\ therethrough.

Ciq Preferably, at least one of said dual internal blinds is a concertina configured blind.

Preferably, each of said dual internal blinds is a concertina configured blind.

Preferably, each said concertina configured blind is attached at an upper edge of said blind to said upper frame element; a lower edge of said blind provided with a weighted trim element.

Preferably, each said concertina configured blind is adapted for movement between a fully retracted state and a fully or partially window covering state; a first of said blinds moving adjacent said first pane and a second one of said blinds moving adjacent said second pane of said double glazed window.

Preferably, an upper edge of a first blind of said dual internal blinds is attached to said upper frame COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21.Jul. 2006 16:24 Wal ington-Dummer Sydney No.6163 P. 9 7 O element; an upper edge of a second of said dual internal (C blinds being attached to a lower edge of said first blind; S each lower edge of said first blind and said second blind provided with a weighted trim element.

Preferably, both said first blind and said second blind may be retracted into a fully concertinaed position Ce 0- at an upper end of said window.

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0 Preferably, said second blind may be lowered into a partially or fully window covering position by operation of a first of said external control elements; said second blind remaining in said fully concertinaed position.

Preferably, said first blind may be lowered into a partially of fully window covering position by operation of a second of said external control elements; said second blind assuming a corresponding partially or fully concertinaed position at a lower portion of said window.

Preferably, at least one of said internal blinds is a roller blind.

Preferably, each of said internal blinds is a roller blind.

In a further broad form of the invention there is provided a method for selectively covering the window opening of a double glazed window assembly by a dual COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21.Jul. 2006 16:24 Wallinston-Dummer Sydney No.6163 P. O internal blind arrangement; said method including the steps Ci of; c' arranging a first opaque blind and a second C translucent blind between an outer and an inner pane of said double glazed window, C providing a first external control element for O said first opaque blind and a second external 0 control element for said second translucent ci blind, providing respective internal control elements for each said first and said second external control elements.

Preferably, said arrangement of said first opaque blind and said second translucent blind is such that each of said first and second blind may be controlled to fully or partially cover said window opening.

BRIEF DESCRIPTION OF DRAWINGS Embodiments of the present invention will now be described with reference to the accompanying drawings wherein: Figure 1 is a perspective exploded view of a preferred embodiment of a double-glazed window and internal blind COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21-Jul. 2006 16:24 Wa li ngton-Dummer Sydney N o. 16 3 P I 9 O assembly according to a preferred embodiment of the C invention, S Figure 2 is a detailed perspective view of external control elements of the blind assembly of Figure 1, Figures 3 and 3A are detailed perspective views of internal control elements of the blind assembly of Figure ci \O Figure 4 is a further detailed view of one of the O internal control elements of Figures 3 and 3A.

Figure 5 shows various stages in use of a blind assembly according to a further preferred embodiment of the invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS With reference to rigure 1, an insulated double-glazed window and dual blind assembly 10 according to a preferred embodiment of the invention comprises a pair of spaced apart panes of glass 12 and 14, separated by side frame elements 16 and 18, upper and lower frame elements 20 and 22 and corner frame elements 24. Preferably, the assembly of frame elements and the glass panes form an hermetically sealed unit adapted for installation in suitable external framing (not shown) such as a timber or metal frame for incorporation into the wall of a building.

Retained one behind the other between glass panes 12 and 14, are dual internal blinds 26 and 28. In this first COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21.Jul. 2006 16:24 Wal lington-Dummer Sydney No.6163 P. 12 10 SO preferred embodiment both blinds 26 and 28 are of C- concertina construction. Each of blinds 26 and 28 is raised Sand lowered by a control mechanism. First, or nighttime blind 26, is formed of an opaque material preventing the transmission of light and also substantially, the transmission of ultraviolet radiation. Second, or daytime

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n blind 28 on the other band is translucent, permitting the IO transmission of light although also substantially O restricting that of ultraviolet radiation. Each blind is attached at an upper edge and provided at a lower edge with weighted trim elements 27 and 29 respectively.

With reference now to Figures 2 to 4, the control mechanism for the individual raising and lowering of either of the two blinds 26 and 28 is effected by a pair of external control assemblies acting on corresponding internal control assemblies. One of the pair of external control assemblies 30, the right hand one, is shown in Figure 2, and comprises a magnetic slide system disposed along the right hand side of the window. The left hand side control assembly is a mirror symmetrical copy of this.

Each external control assembly 30 comprises a guide rail 32 and a slider assembly 34. Guide rail 32 comprises a channel section 36 with a flange 38 and is retained in position against pane 12 by the clamping of flange 38 between pane 12 and the external frame surround (not shown). The furthest, or free side element 35 of channel 36 COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21.Jul. 2006 16:25 Wallington-Dummer Sydney No.6163 P. 13 11 Io is of less depth than that of the side element 37 adjacent C- flange 38 thereby leaving a gap between it and the surface cJ- of pane 12.

Slide assembly 34 comprises a slider casing 40 and a slider block 44. Slider casing 40 is provided with an shaped protrusion 42 which is sized and shaped to engage o with side element 35 of channel section 36 such that slider I0 casing 40 may be slid vertically up and down along guide 0 rail 32. An alternative form of slider casing 40A also shown in Figure 2, is provided with finger grips 41.

Slider block 44 is housed in slider casing 40, and is shown in Figure 2 with the face normally facing the surface of pane 12 turned around for clarity. Slider block 44 is provided with rollers 46 and magnets 48, with the rollers so arranged that the body of slider block 44 and the magnets 48 are just free of the surface of pane 12 thereby ensuring minimal friction as slider assembly 34 is moved up and down along rail 32.

Turning now to the internal control assembly with reference to Figures 1, 3, 3A and 4. Each of the pair of external slide assemblies 34 is magnetically coupled to an internal slider block 50 sliding in each of a pair of internal guide rail 52 and 54 (partly shown in Figure 1) Internal guide rails 52 and 54 are channel sections extending substantially the length of side frame elements 16 and 18.

COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21 Jul, 2006 16:25 WallIinglon-Dummer Sydney No-6163 P. 14 -12 SN With particular reference to Figure 4, each internal (N slider block 50 is provided with magnets 56 and rollers 58 Z protruding slightly from each of opposing faces 60 and 62 so as to allow movement of the blocks 50 within the channel sections of internal guide rails 53 and 54 with minimal friction. Each slider block 50 is further provided with a o double groove pulley 64 mounted in an upper end of the V.0 block and with four apertures 66 for passage of strands of 0 a cable 68 passing around pulley 64.

With reference to Figures 3 and 3A, further components of the internal control system comprise outer end roller blocks 70 and 72, and intermediate roller blocks 74 and 76, all of which are fixedly mounted to angle members 78 and 79, which are in turn fixed to upper frame element 20 (as seen in Figure 1) Each of roller blocks 70 and 72 is positioned directly above the upper ends of internal guide rails 53 and 54 respectively and each is provided with a single roller 71 and 73 as can be seen in the enlarged inset views of Figure 3A. Each of intermediate roller blocks 74 and 76 is provided with twin rollers 75A and and 77A and 775 respectively.

The up and down movement of first blind 26 between an open and a closed state will now be described by tracing the path of two strands 68A and 682 of a single length of cable 68 passing around the pulley 64 of right hand internal slider block 50. First strand 68A of cable 68 is COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21.Jul. 2006 16:25 Wal I in ton-Dummer Sydney No.6163 P. 13 o attached at a first point 27A located towards the left hand end of weighted trim element 27 at the lower edge of first Z blind 26 (see Figure Strand 68A extends upwardly c-i through apertures in the concertina elements of first blind 26, up to and over roller 75B of intermediate roller block 74. From roller 75B strand 68A extends to and over roller o 73 of right hand outer end roller block 72, and down to ci IO pass around pulley 64.

0- Strand 68A of cable 68 now passes over fixed peg attached to side frame element 18 and continues as strand 68B. Strand 68B also passes around pulley 64 and thence upwardly to and over roller 73. From roller 73 strand 68B extends to and over roller 77B of intermediate roller block 76 and down through apertures in concertina elements of first blind 26 to attach at second point 27B located towards the right hand end of weighted trim element 27 (point 27B is obscured in Figure The length of cable 68 is such that when internal slider block 50 is at the uppermost limit of its travel within internal guide rail 54, weighted trim element of first blind 26 is adjacent to or touching lower frame element 22 and first blind 26 covers substantially the whole of the window opening bounded by frame elements 16 to 22.

It will be understood that if right hand internal slider block 50 is moved downwardly from this uppermost limit of travel by interaction with the magnetically COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21 Jul 2006 16:25 Wal l inston-Dummer Sydney No.6163 P. 16 14 SN coupled external slider assembly 34, both strands 68A and C(i 68B passing through the apertures in concertina elements of S first blind 26 will be retracted upwardly and the c concertina element gathered upwardly to increasingly uncover the window opening.

The operation of second blind 28 by internal slider o n block 52 and it corresponding external slider assembly is ci V0 analogous to that described for first blind 26.

0 To prevent leakage of light and also further restrict thermal transmission when either or both of dual internal blinds 26 and 28 are closed, the two opposing side frame elements may be provided with angle section extrusions 23 and 25 so that the side edges of the blinds overlap somewhat the flanges of these angle sections lying parallel to the inside surface of pane 14.

Second Preferred Embodiment Although the above description has referred to a dual blind system in which each of the blinds is attached at an upper edge so that opening and closing of the blinds controls the degree of expose window aperture extending upwardly from the lower edge of the window, the control mechanism herein described can equally be applied to a "Roman" type of blind. In this embodiment, it is the lower edge of each of the two blinds which is attached to a lower internal frame element of the double glazed window and the COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21.Jul. 2006 16:26 Wal inston-Dummer Sydney No.6163 P. 17 15 \O strands of left hand and right hand control cables attached Ci to weighted trim elements at the upper edges of the blinds.

Z It will further be appreciated that in this second embodiment, the blinds need not be of a concertina construction, but may be roller blinds, mounted on rollers affixed adjacent to the internal lower frame element of the M window.

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o Third Preferred Embodiment In a third preferred embodiment of the invention, the dual pair of internal blinds comprise a first blind attached at an upper edge adjacent the upper frame element of the window assembly. This first blind is of concertina configuration and operable by the external and internal control elements as described for the first embodiment above. However, in this embodiment, the second of the two blinds is a "Roman" type blind, either a roller or concertina form blind operating in the manner of as described for the second embodiment.

Fourth Preferred Embodiment In a further preferred embodiment of the invention, with reference to Figure 5, the dual blind assembly 100 is again installed between the inner and outer panes of a double glazed window 112. In this arrangement however the daytime blind 116 and nighttime blind 118 are not disposed COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21.Jul. 2006 16:26 Wallington-Dummer Sydney No.6163 P. 18 16 SO one behind the other but with the upper edge 120 of the nighttime blind joined to the lower edge 122 of the daytime S blind. The upper edge of the daytime blind is attached at the upper end 114 of the window frame 124.

Again, as previously described, the respective lower edges 122 and 126 of the daytime and nighttime blind Ssections are provided with a weighted trim piece so that V\ the blinds are effectively biased in a downward direction O to assume a closed position.

As shown in Figure 5A, both the nighttime blind 118 and the daytime blind 116, which are of concertina construction, may be retracted into a first fully opened position at the top 114 of the window frame 124, by the operation of the right hand control 130 and left hand control 132 respectively. In this position the window is substantially unobstructed.

The operation of the right hand external control assembly 130 acting on the corresponding internal control assembly as previously described above, may now be used to lower nighttime blind 118 either partially or into the fully closed position as shown in Figure 5B. Daytime blind 116 remains in the fully retracted position.

Operation of the left hand external control assembly 132 will lower the daytime blind 116 from its fully retracted position to a partially closed or the fully closed position as shown in Figure 5C. When the daytime COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21 Jul. 2006 16:26 Wal ington-Dummer Sydney No.6163 P. 19 17 IO blind 116 is in this fully closed position, nighttime blind (C 118 assumes the compacted concertinaed condition shown in S Figure A reversal of the operations of the left hand control assembly 132 followed by the right hand control assembly 130 restores the daytime blind 116 and nightime blind 118 r o to the fully retracted positions of Figure 5A as shown also

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IN0 in Figure 0 As well as allowing a choice between an unobstructed window, full privacy from the opaque nighttime blind or the light admitting translucency of the daytime blind, this arrangement of the daytime and nighttime blinds, also allows a user to select a window covering combination of opaque and translucent sections as desired.

In Use By the provision of the dual control mechanism described above, the insulated window with dual internal blinds provides a user with an increased efficiency of control of thermal energy transmission, as well as control of light and privacy. Thus during daylight, a user may elect to fully retract the opaque blind but leave the translucent blind closed to allow light to enter while maintaining a degree of privacy as well as a reduction in thermal transmission. Or with both blinds retracted, the window allows unobstructed viewing.

COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21.Jul 2006 16:26 Wal ngton-Dummer Sydney No.6163 P. 18

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0 CN The above describes only some embodiments of the present invention and modifications, obvious to those c-S skilled in the art, can be made thereto without departing from the scope and spirit of the present invention.

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COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21

Claims (10)

1. 3. The assembly of claim 1 or 2 wherein said external control elements comprise a pair of user operable slider assemblies adapted for guided vertical movement over an external surface of a first pane of said insulated window; said vertical movement guided by a guide rail along each opposing side of said insulated window.
2. 4. The assembly of claim 3 wherein said slider assembly comprises a slider block and a slider casing housing said slider block; said slider casing adapted for sliding engagement with said guide rail. COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21
3. 21-Jul. 2006 16:27 Wall in ton-Dummer Svdney No. 16 3 P 22 20 Va o 5. The assembly of claim 4 wherein said slider block CA comprises a body provided with friction reducing h-c rollers and magnetic elements. 6. The assembly of any one of claims 1 to 5 wherein said internal control elements comprise a left hand internal slide block and a right hand internal slide Ci block; each said slide block adapted for guided NO Svertical movement between said first pane and second pane. 7. The assembly of claim 6 wherein each said internal slide block is provided with friction reducing rollers and magnetic elements; each said internal slide block moving in a guide rail positioned between said first and second panes along each opposing side of said window. 8. The assembly of any one of claims 6 or 7 wherein each of said user operable slider assemblies and respective ones of said internal slide blocks on said opposing sides of said window are magnetically coupled by interaction of said magnet elements disposed within said external slider assemblies and said internal slide blocks. COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21 .Ju 2006 16:27 Walli ngton-Dummer Sydney No.6163 P. 23 21 o 9. The assembly of claim 4 wherein each of said internal (C slider blocks is further provided with a double groove pulley. The assembly of any one of claims 1 to 9 wherein said internal control elements further comprise a left end roller block and a right hand roller block; each said C roller block affixed adjacent upper ends of said internal guide rails. 11. The assembly of any one of claims 1 to 10 wherein said internal control elements further comprise a left hand and a right hand intermediate roller block. 12. The assembly of any one of claims 1 to 11 wherein each said blind is controlled between a closed and an open state by a left hand strand and a right hand strand of a cable; each strand attached to a respective left hand and right hand point on said weighted trim element: said left hand point and said right hand point vertically below respective said left hand and right hand intermediate roller blocks, and wherein each of said cable strands passes through apertures in concertina elements of said blind. 13. The assembly of claim 12 wherein respective said left hand strand and said right hand strand of a first of said dual internal blinds pass over rollers in COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21.Jul. 2006 16:27 Wallinston-Dummer Sydney No.6163 P. 24 22 Io corresponding said intermediate roller blocks to said C( right hand end roller block; said left hand strand and Z said right hand strand passing around said double c- groove pulley of said right hand internal slide block to a fixed point along said side frame element; the arrangement being such that downward movement of said o internal slider block causes upward retraction of said ND weighted trim element and gathering of said concertina Sconfigured blind. 14. The assembly of any one of claims 1 to 13 wherein at least one of said dual internal blinds is opaque. The assembly of any one of claims 1 to 13 wherein at least one of said dual internal blinds is translucent. 16. The assembly of any one of claims 1 to 13 wherein at least one of said dual internal blinds is of a material restricting thermal transmission therethrough. 17. The assembly of any one of claims 1 to 13 wherein at least one of said dual internal blinds is a concertina configured blind. 18. The assembly of any one of claims 1 to 13 wherein each of said dual internal blinds is a concertina configured blind. COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21.Jui. 2006 16:27 Wallington-Dummer Sydney No.6163 P. 23 O 19. The assembly of claim 17 or 18 wherein each said concertina configured blind is attached at an upper Sedge of said blind to said upper frame element; a c-1 lower edge of said blind provided with a weighted trim element. The assembly of claim 19 wherein each said concertina Ce 0 configured blind is adapted for movement between a cO fully retracted state and a fully or partially window covering state; a first of said blinds moving adjacent said first pane and a second one of said blinds moving adjacent said second pane of said double glazed window. 21. The assembly of claim 17 or 18 wherein an upper edge of a first blind of said dual internal blinds is attached to said upper frame element; an upper edge of a second of said dual internal blinds being attached to a lower edge of said first blind; each lower edge of said first blind and said second blind provided with a weighted trim element.
4. 22. The assembly of claim 21 wherein both said first blind and said second blind may be retracted into a fully concertinaed position at an upper end of said window.
5. 23. The assembly of claim 21 or 22 wherein said second blind may be lowered into a partially or fully window COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21 Jul. 2006 16:27 Wal ington-Dummer Sydney No.6163 P. 26 24 o covering position by operation of a first of said (C external control elements; said second blind remaining Sin said fully concertinaed position.
6. 24. The assembly of any one of claims 21 to 23 wherein said first blind may be lowered into a partially of fully window covering position by operation of a 0 second of said external control elements; said second cO Sblind assuming a corresponding partially or fully concertinaed position at a lower portion of said window. The assembly of any one of claims 1 to 8 wherein at least one of said internal blinds is a roller blind.
7. 26. The assembly of any one of claims 1 to 8 wherein each of said internal blinds is a roller blind.
8. 27. A method for selectively covering the window opening of a double glazed window assembly by a dual internal blind arrangement; said method including the steps of: arranging a first opaque blind and a second translucent blind between an outer and an inner pane of said double glazed window, providing a first external control element for said first opaque blind and a second external COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21 21.Jul. 2006 16:28 Wallinston-Dummer Sydney No.6163 P. 27 25 NO control element for said second translucent CA blind, providing respective internal control elements for each said first and said second external control elements. M n
9. 28. The method of claim 28 wherein said arrangement of O said first opaque blind and said second translucent o blind is such that each of said first and second blind may be controlled to fully or partially cover said window opening.
10. 29. An insulated window and dual internal blind assembly as herein described and with reference to the accompanying drawings. July 2006 QI MA By his Patent Attorneys WALLINGTON-DUMMER COMS ID No: SBMI-04237227 Received by IP Australia: Time 16:29 Date 2006-07-21