CA1127960A - Reflective insulator window shutter - Google Patents
Reflective insulator window shutterInfo
- Publication number
- CA1127960A CA1127960A CA364,004A CA364004A CA1127960A CA 1127960 A CA1127960 A CA 1127960A CA 364004 A CA364004 A CA 364004A CA 1127960 A CA1127960 A CA 1127960A
- Authority
- CA
- Canada
- Prior art keywords
- sheet
- reflective
- flexible material
- top member
- window
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Blinds (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A reflective insulator assembly for the inside of a window is disclosed. The assembly provides a removable shutter for a window to aid in preventing heat loss by radiation. The assembly has a rectangular frame for mounting on the inside of the window, the frame has a top member, a bottom member and two side members. The top member has a slot extending therethrough, and the bottom and side members have grooves in inward facing sides. A sheet of flexible material is provided having reflective surfaces on both faces, the sheet extends through the slot in the top member and has bottom and side edges to fit into the grooves in the bottom and side members, and a roller is provided for the sheet, located adjacent the top member.
A reflective insulator assembly for the inside of a window is disclosed. The assembly provides a removable shutter for a window to aid in preventing heat loss by radiation. The assembly has a rectangular frame for mounting on the inside of the window, the frame has a top member, a bottom member and two side members. The top member has a slot extending therethrough, and the bottom and side members have grooves in inward facing sides. A sheet of flexible material is provided having reflective surfaces on both faces, the sheet extends through the slot in the top member and has bottom and side edges to fit into the grooves in the bottom and side members, and a roller is provided for the sheet, located adjacent the top member.
Description
~lZ7960 The present invention relates to a reflective insulator assembly for a window. More specifically, the invention relates to a reflective insulator shutter with guide members at the edge for use on the inside of window frames in houses, offices, buildings, apartment buildings, and the like.
In these days of rising energy costs, it is becoming more and more important to insulate houses, office buildings, and the like as efficiently as possible to reduce heat loss and keep the heating costs as low as possible. Windows represent perhaps the most inefficient insulated areas in a building, and have high heat losses. A double glazed window is better than a single glazed window because a pocket of air is main-tained between the two glass panes which effectively insulates the building. However, heat loss by radiation still occurs even through a double glazed window.
The present invention provides a removable shutter sealed at the edges which can be placed on the inside of a window, the shutter has reflective surfaces on both sides so that heat loss by radiation is greatly reduced. The shutter may be in the form of a roller blind passing through a top slot and having guides at the sides and bottom. The assembly may be installed in any type of window arrangement.
The present invention provides a reflective insulator assembly for the inside of a window, comprising a rectangular frame for mounting on the inside of the window, the frame having a top member, a bottom member, and two side members. The top member has a slot extending therethrough, and the bottom and side members have grooves in inward facing sides. A sheet of flexible material is provided having reflective surfaces on both faces, the sheet extends through the slot in the top member and has bottom and side edges to fit into the grooves in the bottom and side members, and a roller is provided for the sheet located llZ7~60 adjacent the top member.
In drawings which illustrate the embodiments of the ~nvention, Fig. 1 is an isometric view of one embodiment of a reflective insulator window shutter.
Fig. 2 is a sectional view at line 2-2 of Fig. 1.
Fig. 3 is a sectional view at line 3-3 of Fig. 1.
Fig. 4 is a cross-sectional view of one embodiment of a side member o~ bottom member of the frame for a reflective insulator window shutter.
Fig. 5 is a partial elevational view of the section shown in Fig. 4 Fig. 6 is a cross-sectional view of another embodiment of a side member or bottom member of the frame for a reflective insulator window shutter.
Fig. 7 is a partial elevational view of the section shown in Fig. 6.
Referring now to the drawings, Figs. 1,2 and 3 show one embodiment of a reflective insulator window shutter. The assembly comprises a rectangular frame 10 having two vertical side members 11 and a bottom member 12. Each member has a U-shaped cross-section with grooves 13 facing inwards and having a rectangular cross section. A top member 14 of the rectangular frame 10 has a slot 15 passing through the member and a flexible shutter or blind I6 extends through the slot 15 in the top member 14. The shutter 16 wraps around a roller 17 and one embodiment incorporates a spring return for winding up the shutter or blind 16 when not in use. The roller 17 is supported at each end by supports 18 attached to the top of the two side members 11. The blind 16 has a handle 19 for ease of moving the blind 16 up and down. The handle 19 is positioned above the bottom edge of the blind so that when the blind 16 is in it~s lowest position, the bottom edge of the blind fits into the groove 13 of the bottom member 12. The side edges of the blind fit into the grooves 13 of the side members 11, and thus provide guides so that the blind 16 moves smoothly up and down within the frame 10.
The blind has reflective surfaces on both sides. In one embodiment it is formed of a metal foil, secured between clear plastic sheets. In another embodiment it may be a plastic sheet impregnated with a suitable filler such as titanium dioxide, magnesium carbonate, lithopone, zincoxide, or other highly re-flective metallic or non-metallic oxides which gives the blind heat insulation properties for both radiation and conduction.
In another embodiment, the blind may be formed of a woven sheet impregnated with a suitable filler to give the blind a high luster, and secured between clear plastic sheets. Highly reflective blinds can be made with mirror like surfaces or highly reflective where the reflection is diffused such as by woven sheets impregnated with reflective oxides or carbonates. In a preferred embodiment the insulation property of the blind is nearly proportional to the reflectivity and emissivity from the surface of the sheet.
In cold weather a pocket of air is trapped between the blind 16 and the glass window pane, and this cold air exerts a pressure against the blind 16 pressing it against the walls in the grooves 13 in the side members 11 and bottom member 12 and in the slot 15 in the top member 14. Thus, air cannot pass around the edges of the blind 160 Furthermore, in the hot season the blind 16 prevents the outside heat passing into the building.
Thus the blind 16 has a double effect of preventing heat escaping from the building in the winter and heat entering the building 3Q in the summer.
In the embodiments shown in Figs. ~ and 5 the side members 11 and bottom member 12 are formed of a fixed portion 20 l~Z7960 and a movable portion 21. The fixed portion 20 has a flat sur-face 22 and V-groove 23, and the movable portion 21 has an opposing flat surface 24 and a V-groove 25 which fits into the V-groove 23 on the fixed portion 20 and slides backwards and -3a-i~Z7960 forwards to increase or decrease the distance between the flat surface 22 on the fixed portion 20 and the flat surface 24 on the movable portion 21. Thus, a groove 26 is formed between these two flat surfaces 22, 24, into which the edge of the blind 16 fits. A thumb screw 27 passes through a slot 28 in an arm 29 of the movable portion 21 and screws into a tapped hole 30 in the fixed portion 20 so that when the thumb screw 27 is tightened the movable portion 21 is locked in place and thus grips the blind 16 between the moving portion 21 and the fixed portion 20.
By ~ripping the edges in this way a better seal is provided so that air cannot pass around the edges of the blind.
In another embodiment shown in Figs. 6 and 7 a fixed portion 40 having an L-shaped cross section, has a key-hole slot 41 in one leg of the L-shaped cross section and a movable portion 42 with a bulbous end 43 slides into the slot 41 and allows the movable portion 42 to pivot within the key-hole slot 41. A flat surface 44 is provided on the inside of the other leg of the L-shaped cross section, and the edge of the blind 16 rests on this surface 44. A bent arm 45 of the movable portion 42 has an end 46 which presses against the edge of the blind 16 holding it against the flat surface 44 of the fixed portion 40. A thumb screw 47 extends through a hole 48 in the movable portion 42 and fits into a tapped hole 49 in the fixed portion 40. A small com-pression spring 50 is provided between the movable portion 42 and the fi~ed portion 40, so that when the thumb scr~w 47 is tightened th~ end 46 of the bent arm 45 presses against the flat surface 44 of the fixed portion 40, gripping the edge of the blind 16 therebetween. When the thumb screw 47 is released, the compression spring 50 forces the moving portion 42 away from the fixed portion 40 to allow a space between the end 46 of the bent arm 45 a~d the 1at surface 44 of the fixed portion 40, thus allowing the blind 16 to slide backwards and forwards easily l~Z7g60 within the grooves so formed.
The rectangular frame 10 may be permanently installed on a window or alternatively may be installed as a temporary arrangement. The size of the frame and the size of the blind 16 is determined by the size window. The shutter assembly may be made to a specific size or a number of standard sizes may be made. The frame itself must provide a good seal within the window frame to prevent air passing around the outside of the frame. The members of the frame may be made of any convenient material, such as metal or rigid plastic, or a combination of metal and plastic. In the embodiment shown, the blind wraps around a spring roller assembly, however, in frames for larger windows the spring is omitted and the blind is raised and lowered by means of a pulley actuated by a rope, or in some cases by an electric motor. In another embodiment for small windows, the roller 17 is omitted and one edge of the blind is slid into the top slot 15 and the blind lowered into the frame. The inside flanges of side members and bottom members of the frame may then be pressed inwards to hold the blind 16 such as the embodiments shown in Figs. 4 and 6.
Various changes may be made to the specific arrangement of frame members or blind opening and closing without departing from the spirit of the present invention, which is only limited by the scope of the appended claims
In these days of rising energy costs, it is becoming more and more important to insulate houses, office buildings, and the like as efficiently as possible to reduce heat loss and keep the heating costs as low as possible. Windows represent perhaps the most inefficient insulated areas in a building, and have high heat losses. A double glazed window is better than a single glazed window because a pocket of air is main-tained between the two glass panes which effectively insulates the building. However, heat loss by radiation still occurs even through a double glazed window.
The present invention provides a removable shutter sealed at the edges which can be placed on the inside of a window, the shutter has reflective surfaces on both sides so that heat loss by radiation is greatly reduced. The shutter may be in the form of a roller blind passing through a top slot and having guides at the sides and bottom. The assembly may be installed in any type of window arrangement.
The present invention provides a reflective insulator assembly for the inside of a window, comprising a rectangular frame for mounting on the inside of the window, the frame having a top member, a bottom member, and two side members. The top member has a slot extending therethrough, and the bottom and side members have grooves in inward facing sides. A sheet of flexible material is provided having reflective surfaces on both faces, the sheet extends through the slot in the top member and has bottom and side edges to fit into the grooves in the bottom and side members, and a roller is provided for the sheet located llZ7~60 adjacent the top member.
In drawings which illustrate the embodiments of the ~nvention, Fig. 1 is an isometric view of one embodiment of a reflective insulator window shutter.
Fig. 2 is a sectional view at line 2-2 of Fig. 1.
Fig. 3 is a sectional view at line 3-3 of Fig. 1.
Fig. 4 is a cross-sectional view of one embodiment of a side member o~ bottom member of the frame for a reflective insulator window shutter.
Fig. 5 is a partial elevational view of the section shown in Fig. 4 Fig. 6 is a cross-sectional view of another embodiment of a side member or bottom member of the frame for a reflective insulator window shutter.
Fig. 7 is a partial elevational view of the section shown in Fig. 6.
Referring now to the drawings, Figs. 1,2 and 3 show one embodiment of a reflective insulator window shutter. The assembly comprises a rectangular frame 10 having two vertical side members 11 and a bottom member 12. Each member has a U-shaped cross-section with grooves 13 facing inwards and having a rectangular cross section. A top member 14 of the rectangular frame 10 has a slot 15 passing through the member and a flexible shutter or blind I6 extends through the slot 15 in the top member 14. The shutter 16 wraps around a roller 17 and one embodiment incorporates a spring return for winding up the shutter or blind 16 when not in use. The roller 17 is supported at each end by supports 18 attached to the top of the two side members 11. The blind 16 has a handle 19 for ease of moving the blind 16 up and down. The handle 19 is positioned above the bottom edge of the blind so that when the blind 16 is in it~s lowest position, the bottom edge of the blind fits into the groove 13 of the bottom member 12. The side edges of the blind fit into the grooves 13 of the side members 11, and thus provide guides so that the blind 16 moves smoothly up and down within the frame 10.
The blind has reflective surfaces on both sides. In one embodiment it is formed of a metal foil, secured between clear plastic sheets. In another embodiment it may be a plastic sheet impregnated with a suitable filler such as titanium dioxide, magnesium carbonate, lithopone, zincoxide, or other highly re-flective metallic or non-metallic oxides which gives the blind heat insulation properties for both radiation and conduction.
In another embodiment, the blind may be formed of a woven sheet impregnated with a suitable filler to give the blind a high luster, and secured between clear plastic sheets. Highly reflective blinds can be made with mirror like surfaces or highly reflective where the reflection is diffused such as by woven sheets impregnated with reflective oxides or carbonates. In a preferred embodiment the insulation property of the blind is nearly proportional to the reflectivity and emissivity from the surface of the sheet.
In cold weather a pocket of air is trapped between the blind 16 and the glass window pane, and this cold air exerts a pressure against the blind 16 pressing it against the walls in the grooves 13 in the side members 11 and bottom member 12 and in the slot 15 in the top member 14. Thus, air cannot pass around the edges of the blind 160 Furthermore, in the hot season the blind 16 prevents the outside heat passing into the building.
Thus the blind 16 has a double effect of preventing heat escaping from the building in the winter and heat entering the building 3Q in the summer.
In the embodiments shown in Figs. ~ and 5 the side members 11 and bottom member 12 are formed of a fixed portion 20 l~Z7960 and a movable portion 21. The fixed portion 20 has a flat sur-face 22 and V-groove 23, and the movable portion 21 has an opposing flat surface 24 and a V-groove 25 which fits into the V-groove 23 on the fixed portion 20 and slides backwards and -3a-i~Z7960 forwards to increase or decrease the distance between the flat surface 22 on the fixed portion 20 and the flat surface 24 on the movable portion 21. Thus, a groove 26 is formed between these two flat surfaces 22, 24, into which the edge of the blind 16 fits. A thumb screw 27 passes through a slot 28 in an arm 29 of the movable portion 21 and screws into a tapped hole 30 in the fixed portion 20 so that when the thumb screw 27 is tightened the movable portion 21 is locked in place and thus grips the blind 16 between the moving portion 21 and the fixed portion 20.
By ~ripping the edges in this way a better seal is provided so that air cannot pass around the edges of the blind.
In another embodiment shown in Figs. 6 and 7 a fixed portion 40 having an L-shaped cross section, has a key-hole slot 41 in one leg of the L-shaped cross section and a movable portion 42 with a bulbous end 43 slides into the slot 41 and allows the movable portion 42 to pivot within the key-hole slot 41. A flat surface 44 is provided on the inside of the other leg of the L-shaped cross section, and the edge of the blind 16 rests on this surface 44. A bent arm 45 of the movable portion 42 has an end 46 which presses against the edge of the blind 16 holding it against the flat surface 44 of the fixed portion 40. A thumb screw 47 extends through a hole 48 in the movable portion 42 and fits into a tapped hole 49 in the fixed portion 40. A small com-pression spring 50 is provided between the movable portion 42 and the fi~ed portion 40, so that when the thumb scr~w 47 is tightened th~ end 46 of the bent arm 45 presses against the flat surface 44 of the fixed portion 40, gripping the edge of the blind 16 therebetween. When the thumb screw 47 is released, the compression spring 50 forces the moving portion 42 away from the fixed portion 40 to allow a space between the end 46 of the bent arm 45 a~d the 1at surface 44 of the fixed portion 40, thus allowing the blind 16 to slide backwards and forwards easily l~Z7g60 within the grooves so formed.
The rectangular frame 10 may be permanently installed on a window or alternatively may be installed as a temporary arrangement. The size of the frame and the size of the blind 16 is determined by the size window. The shutter assembly may be made to a specific size or a number of standard sizes may be made. The frame itself must provide a good seal within the window frame to prevent air passing around the outside of the frame. The members of the frame may be made of any convenient material, such as metal or rigid plastic, or a combination of metal and plastic. In the embodiment shown, the blind wraps around a spring roller assembly, however, in frames for larger windows the spring is omitted and the blind is raised and lowered by means of a pulley actuated by a rope, or in some cases by an electric motor. In another embodiment for small windows, the roller 17 is omitted and one edge of the blind is slid into the top slot 15 and the blind lowered into the frame. The inside flanges of side members and bottom members of the frame may then be pressed inwards to hold the blind 16 such as the embodiments shown in Figs. 4 and 6.
Various changes may be made to the specific arrangement of frame members or blind opening and closing without departing from the spirit of the present invention, which is only limited by the scope of the appended claims
Claims (8)
1. A reflective insulator assembly for the inside of a window comprising a rectangular frame for mounting on the inside of a window, the frame having a top member, a bottom member and two side members, the top member having a slot ex-tending therethrough, the bottom and side members having grooves in inward facing sides, a sheet of flexible material having reflective surfaces on both faces, the sheet extending through the slot in the top member and having bottom and side edges to fit in the grooves in the bottom and side members, the bottom and side members having adjustable gripping means for holding and sealing the edges of the sheet in the grooves and a roller for the sheet located adjacent the top member,
2. The reflective insulator assembly according to claim 1 wherein the sheet of flexible material is formed from a metal foil secured between clear plastic sheets.
3. The reflective insulator assembly according to claim 1 wherein the sheet of flexible material is a plastic sheet impregnated with a highly reflective metal oxide.
4. The reflective insulator assembly according to claim 1 wherein the sheet of flexible material is a woven sheet impregnated with a highly reflective metal oxide .
5. The reflective insulator assembly according to claim 4 wherein the sheet of flexible material is secured to a plastic sheet.
6. The reflective insulator assembly according to claim 4 wherein the sheet of flexible material is secured between two plastic sheets.
7. The reflective insulator assembly according to claim 1 wherein the sheet of flexible material is a woven sheet impregnated with a highly reflective filler.
8. The reflective insulator assembly according to claim 1 wherein the sheet of flexible material is a plastic sheet impregnated with a highly reflective filler.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13397080A | 1980-03-26 | 1980-03-26 | |
| US133,970 | 1980-03-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1127960A true CA1127960A (en) | 1982-07-20 |
Family
ID=22461163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA364,004A Expired CA1127960A (en) | 1980-03-26 | 1980-11-05 | Reflective insulator window shutter |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1127960A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781235A (en) * | 1987-05-06 | 1988-11-01 | Hedstrom Kurt B | Combined sun screen and storm window |
-
1980
- 1980-11-05 CA CA364,004A patent/CA1127960A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781235A (en) * | 1987-05-06 | 1988-11-01 | Hedstrom Kurt B | Combined sun screen and storm window |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |