CA1075534A - Window thermal barrier - Google Patents
Window thermal barrierInfo
- Publication number
- CA1075534A CA1075534A CA301,822A CA301822A CA1075534A CA 1075534 A CA1075534 A CA 1075534A CA 301822 A CA301822 A CA 301822A CA 1075534 A CA1075534 A CA 1075534A
- Authority
- CA
- Canada
- Prior art keywords
- wall
- projection
- thermal barrier
- stepped
- rear wall
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/04—Wing frames not characterised by the manner of movement
- E06B3/263—Frames with special provision for insulation
- E06B3/26301—Frames with special provision for insulation with prefabricated insulating strips between two metal section members
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/04—Wing frames not characterised by the manner of movement
- E06B3/263—Frames with special provision for insulation
- E06B3/26301—Frames with special provision for insulation with prefabricated insulating strips between two metal section members
- E06B3/26305—Connection details
- E06B2003/26312—Snap connections
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/04—Wing frames not characterised by the manner of movement
- E06B3/263—Frames with special provision for insulation
- E06B2003/26349—Details of insulating strips
- E06B2003/2635—Specific form characteristics
- E06B2003/26352—Specific form characteristics hollow
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/04—Wing frames not characterised by the manner of movement
- E06B3/263—Frames with special provision for insulation
- E06B2003/26349—Details of insulating strips
- E06B2003/2635—Specific form characteristics
- E06B2003/26358—Specific form characteristics stepped or undulated
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/04—Wing frames not characterised by the manner of movement
- E06B3/263—Frames with special provision for insulation
- E06B3/26301—Frames with special provision for insulation with prefabricated insulating strips between two metal section members
- E06B3/26305—Connection details
- E06B3/26307—Insulating strips and metal section members both having L-shaped ribs, the engagement being made by a movement transversal to the plane of the strips
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Wing Frames And Configurations (AREA)
Abstract
ABSTRACT
An improved thermal barrier of one-piece construction which is adapted to provide a locking and hermetically sealing joint between two aluminum window sections. The thermal barrier comprises an outer wall and an inner wall extending substant-ially parallel to the outer wall and spaced apart therefrom.
A rear wall and a stepped wall interconnect the outer wall and the inner wall, the stepped wall being spaced apart from the rear wall, A front wall is spaced apart from an adjacent portion of the stepped wall, with the front wall and the ad-jacent portion of the stepped wall defining an elongated channel portion. A first projection extends from the outer wall toward the inner wall, the first projection being spaced outwardly from the rear wall and converging toward the rear wall. The first projection and an adjacent portion of the rear wall define a channel therebetween. A second projection extends away from a rear surface of the rear wall toward the outer wall, the second projection having an outer edge spaced apart from the first projection and terminating at a location within the channel defined between the rear wall and the first projection.
An improved thermal barrier of one-piece construction which is adapted to provide a locking and hermetically sealing joint between two aluminum window sections. The thermal barrier comprises an outer wall and an inner wall extending substant-ially parallel to the outer wall and spaced apart therefrom.
A rear wall and a stepped wall interconnect the outer wall and the inner wall, the stepped wall being spaced apart from the rear wall, A front wall is spaced apart from an adjacent portion of the stepped wall, with the front wall and the ad-jacent portion of the stepped wall defining an elongated channel portion. A first projection extends from the outer wall toward the inner wall, the first projection being spaced outwardly from the rear wall and converging toward the rear wall. The first projection and an adjacent portion of the rear wall define a channel therebetween. A second projection extends away from a rear surface of the rear wall toward the outer wall, the second projection having an outer edge spaced apart from the first projection and terminating at a location within the channel defined between the rear wall and the first projection.
Description
~07SS3~
The present invention relates g nerally to a thermal break or barrier and in particular, to an improved thermal barrier which provides a locking and hermetically sealing joint between two aluminium window sections.
The thermal break is mostfrequently utilized as a means of joining together two aluminium window sections in order to form a double window, the double window becoming more popular today due to the necessity to conserve energy, parti-cularly in residential dwellings. Functionally, the thermal break prevent~ the travel of frost from the outside aluminium window section to the inside aluminium window section and is made from a material, such as vinyl, having a relatively low coefficient of heat conductivity, Preferably, the thermal break should be of such a construction as to lock the two aluminiunl windo-w sections to-. gether in such a manner as to prevent the window sections from separating during shipment, handling or installation, as well as to prevent intentional removal of the outer window section after installation by vandals or the like. The thermal break according to the present invention not only achieves this goal,but likewise retains the two aluminium window sections tightly together in such a manner as to prevent air or water infiltration between the thermal barrier and the window sections.
While thermal barriers are known in the aluminium window industry, the known similar thermal barriers do not employ a snap locking attachment between the inner window section and the thermal barrier which prevents removal of the thermal barrier, while likewise achieving a hermetic sealing joint between each window section and the therm~l barrier.
The hermetic sealing of the window sections with the thermal barrier is achieved by joint compre3sion of the thermal barrier ~ ':
---` 1075S34 at both sides thereof where the thermal barrier engages the respective aluminium window section.
According to the present invention there is provided an improved thermal barrier comprising: an outer wall, an inner wall extending substantially parallel to the outer wall and spaced apart therefrom, a rear wall and a stepped wall interconnecting the outer wall and the inner wall, the stepped wall being spaced apart from the rear wall; and a front wall extending away from the outer wall toward the inner wall and spaced apart from an adjacent portion of the stepped wall so as to define an elongated channel portion therebetween. The front wall and the adjacent portion of the stepped wall section converge toward each other such that the elongated channel portion narrows in width from the outer wall to an edge of the front wall, -A first projection extends from the outer wall toward the inner wall, the first projection being spaced out-wardly from the rear wall and converging toward the rear wall, the first projection and an adjacent portion of the rear wall defining a channel therebetween. A second projection extends away from a rear surface of the rear wall toward the outer wall, the second projection having an outer edge spaced apart from the first projection and terminating at a location within the channel defined between-the rear wall and the first projection, In a drawing which illustrates one embodiment of the thermal barrier according to the present invention:-Figure 1 is an end perspective view of a portion of one embodiment of a thermal barrier accord-ing to the present invention, prior to installation, Figure 2 is an end perspective view of the thermal barrier according to Figure 1, installed iO75534 between the frame elements of two alu~inium window sections, the frame elements being shown in phantom, and Figure 3 is a perspective view of the two window sections shown in phantom, with the thermal barrier installed therebetween.
As best seen in Figures 1 and 2, a thermal break or barrier is indicated generally by reference numeral 10, the thermal barrier 10 having an outer wall 12 and an inner wall 14, the inner wall being shorter in length than outer wall 12 and extending substantially parallel thereto. The outer and inner walls 12 and 14 are connected by a rear wall 16 which extends substantially at right angles to the outer and inner walls, and by a front stepped wall section 18.
The rear wall 16 meets the inner wall at one longi-tudinal edge thereof and is connected to the outer wall at a location spaced inwardly from one longitudinal edge thereof.
The stepped wall section 18 includes a first wall portion 20 extending away from a lower surface of the outer wall 12 at a location spaced inwardly from a longitudinal edge of the outer wall, and at an angle slightly greater than 90, where angle A
is approximately 2. A second wall portioll 22 extends away from a second longitudinal edge of the inner wall portion 14 ` and at right angles thereto. The first wall portion 20 and the second wall portion 22 and interconnected by an intermediate wall portion 24, the intermediate wall portion extending sub-stantially parallel to the outer and inner walls 12 and 14.
A front wall 26 is connected to the outer wall 12 along one longitudinal edge of the outer wall. The front wall 26 is spaced slightly outwardly from the first wall portion 20 and extends in the same direction as the first wall portion - `
away from the outer wall 12, terminating at a location sub-stantially in alignment with the intermediate wall portion 24.
The front wall 26 is inclined towards the first wall portion 20, the angle between the front wall 26 and the outer wall 12 being slightly less than 90, where angle B in Figure 1 is approximately 4.
The first wall portion 20, the front wall 26, and the portion of the outer wall 12 joining the two wall sections define an elongated narrow channel 28 having an entrance 30 thereto, the channel widening from the entrance 30 to a base portion thereof at the inner surface of the outer wall 12.
; The narrow channel 28 receives an outer edge of a first aluminium window section Sl, the window section Sl having aluminium frame members extending about the periphery thereof.
Each aluminium member 32, shown in phantom in Figure 2, has a peripheral projecting portion 34 which is received in the channel 28 between the first wall portion 20 and the front wall 26, as described in further detail below. Since the aluminium frame members about the periphery of the first window section Sl each have a similar outwardly projecting peripheral portion 34, the thermal break 10 as shown in Figures 1 and 2 can be utilized about the entire periphery of the first aluminium window section Sl for joining it to a second aluminium window section S2. Likewise, window section S2 is formed fro,~
aluminium extru.sions 36, each extrusion having a similar projecting portion which snaps into locking engagement with thermal barrier 10, as describe~ below.
As noted above, the thermal barrier 10 is provided with means for snapping into locking engagement with the second window section S2, about the periphery of the second window section. The snap lock connection is provided by a pair of 10'75534 cooperating projections incorporated in the construction of the thermal break, including a first projection 38 which extends away from an inner surface of the outer wall 12 and is inclined towards the rear wall 16, the projection 38 being at an angle less than 90 to the outer wall 12, where angle C as indicated in Figure 1 is approximately 14. The projection 38 has a rounded end 40 which slidingly engages the cooperating projecting portion of the aluminium extrusion and facilitates insertion of the projecting portion of the aluminium extrusion into a channel 39 defined by the projection 38 and an adjacent section of the rear wall 16. -A cooperating projection 42, integral with the rear wall 16, extends away from the rear wall 16 at an angle D
which is approximately 40, and in a direction towards the outer wall 12. The projection 42, which has converging side surfaces away from the rear wall, meets the rear wall 16 at a location in alignment with and spaced apart from the rounded end 40 of the projection 38. The projections 38 and 42 are continuous along the entire length of the thermal break 10, although such need not be the case in order to provide a -~
thermal break within the scope of the present invention.
~ ~s best seen in Figure 2, the aluminium window section S2 includes an aluminium extrusion 36 which has a projecting portion 46 having an inverted L-shaped configuration in cross-section, the projecting portion engaging in the channel portion 39 of the thermal barrier. As the thermal barrier is forced into engagement with the frame members of the second window section, the projecting portion 46 enters the channel 39, urging the projection 38 outwardly, as indicated by arrow 48 and, by means of the outwardly directed end portion 47 of the projecting portion 46, urging the -- S --projection 42 inwardly, as indicated by arrow 49 in Figure 2, After insertion of the projecting portion 46 of the aluminium frame member into the channel 39 between the projections 38 and 42, the projections, due to their resiliency, tend to return towards their initial positions. However, the thickness of the aluminium extrusion is such as to prevent the projec-tions from returning completely to their initial positions, such that the resiliency of the projections 38 and 42 urges the ends of the projections into tight hermetic sealing engage-ment with adjacent surfaces of the aluminium extrusion.
Further, the end of the projection 42 fits beneath the out-wardly directed projecting portion 47 of the aluminium extru-sion so as to prevent removal of the thermal barrier once the -~
same is snapped into position between the two window sections.
Further, the length of the portion 47 is slightly greater than the width of the entrance to the channel portion 39 in order to achieve a tight seal between the rounded end 40 of the projection 38 and the adjacent surface of the aluminium extrusion.
Further, upon urging of the thermal barrier into engagement with the frame members of the first and second window sections, the second wall portion 20 and the front wall portion 26 are urged apart, as indicated by arrows 50 and 52 in Figure 2, thereby providing a tight fit of the aluminium frame within the channel 28. The front wall 26 of the thermal barrier 10 is exposed to the outside and, by pro-viding a tight seal with the adjacent surfaces of the aluminium frame members of the first window section, prevents water and air infiltration therebetween. Additionally, the intermediate wall portion 24 of the stepped wall section is urged inwardly as indicated by arrow 54, thereby placing the stepped wall section and particularly the intermediate wall portion 24 thereof in compression, thereby applying pressure toward the rear wall 16. As a result, the thermal break 10 provides a hermetic sealing joint between the thermal barrier and the aluminium -~
frame members of the first and second window sections Sl and S2, as well as providing a locking snap fit between the thermal barrier and the second window section S2, preventing either accidental or intentional removal of the barrier 10. Further, the compressive forces in the thermal barrier 10 after being snapped into engagement with the first and second window sections Sl and S2, renders the thermal break more rigid and the combined window unit more solid. This differs from a sliding fit between existing vinyl strips and between adjacent window sections which cannot be mitered and can be removed after insertion, as well as requiring special channel configurations for the fitting of the sliding extrusion.
me thermal barrier 10 is extruded from plastic, prefer-ably vinyl, and is of substantially constant thickness through-out, but for the projection 42 which is of tapered configuration, narrowing along its length from the connection to the rear wall 16. Subsequent to extrusion, the vinyl strip is cut to the size requirements of the window in association with which it is to be used. Mitered connections can be provided at the ends in order to provide a better fit at the corners of the therrnal barrier, thereby further prevent air or water infiltration therebetween.
This is a further advantage over existing thermal barriers which slidingly engage cooperating channels of two window sections since mitered ends cannot be employed. As well in conventional aluminium window units, when a sliding fit is provided between the thermal break and the aluminium window sections, the barrier can be either accidentally or intention-ally removed, neither of which situation is desirable.
The present invention relates g nerally to a thermal break or barrier and in particular, to an improved thermal barrier which provides a locking and hermetically sealing joint between two aluminium window sections.
The thermal break is mostfrequently utilized as a means of joining together two aluminium window sections in order to form a double window, the double window becoming more popular today due to the necessity to conserve energy, parti-cularly in residential dwellings. Functionally, the thermal break prevent~ the travel of frost from the outside aluminium window section to the inside aluminium window section and is made from a material, such as vinyl, having a relatively low coefficient of heat conductivity, Preferably, the thermal break should be of such a construction as to lock the two aluminiunl windo-w sections to-. gether in such a manner as to prevent the window sections from separating during shipment, handling or installation, as well as to prevent intentional removal of the outer window section after installation by vandals or the like. The thermal break according to the present invention not only achieves this goal,but likewise retains the two aluminium window sections tightly together in such a manner as to prevent air or water infiltration between the thermal barrier and the window sections.
While thermal barriers are known in the aluminium window industry, the known similar thermal barriers do not employ a snap locking attachment between the inner window section and the thermal barrier which prevents removal of the thermal barrier, while likewise achieving a hermetic sealing joint between each window section and the therm~l barrier.
The hermetic sealing of the window sections with the thermal barrier is achieved by joint compre3sion of the thermal barrier ~ ':
---` 1075S34 at both sides thereof where the thermal barrier engages the respective aluminium window section.
According to the present invention there is provided an improved thermal barrier comprising: an outer wall, an inner wall extending substantially parallel to the outer wall and spaced apart therefrom, a rear wall and a stepped wall interconnecting the outer wall and the inner wall, the stepped wall being spaced apart from the rear wall; and a front wall extending away from the outer wall toward the inner wall and spaced apart from an adjacent portion of the stepped wall so as to define an elongated channel portion therebetween. The front wall and the adjacent portion of the stepped wall section converge toward each other such that the elongated channel portion narrows in width from the outer wall to an edge of the front wall, -A first projection extends from the outer wall toward the inner wall, the first projection being spaced out-wardly from the rear wall and converging toward the rear wall, the first projection and an adjacent portion of the rear wall defining a channel therebetween. A second projection extends away from a rear surface of the rear wall toward the outer wall, the second projection having an outer edge spaced apart from the first projection and terminating at a location within the channel defined between-the rear wall and the first projection, In a drawing which illustrates one embodiment of the thermal barrier according to the present invention:-Figure 1 is an end perspective view of a portion of one embodiment of a thermal barrier accord-ing to the present invention, prior to installation, Figure 2 is an end perspective view of the thermal barrier according to Figure 1, installed iO75534 between the frame elements of two alu~inium window sections, the frame elements being shown in phantom, and Figure 3 is a perspective view of the two window sections shown in phantom, with the thermal barrier installed therebetween.
As best seen in Figures 1 and 2, a thermal break or barrier is indicated generally by reference numeral 10, the thermal barrier 10 having an outer wall 12 and an inner wall 14, the inner wall being shorter in length than outer wall 12 and extending substantially parallel thereto. The outer and inner walls 12 and 14 are connected by a rear wall 16 which extends substantially at right angles to the outer and inner walls, and by a front stepped wall section 18.
The rear wall 16 meets the inner wall at one longi-tudinal edge thereof and is connected to the outer wall at a location spaced inwardly from one longitudinal edge thereof.
The stepped wall section 18 includes a first wall portion 20 extending away from a lower surface of the outer wall 12 at a location spaced inwardly from a longitudinal edge of the outer wall, and at an angle slightly greater than 90, where angle A
is approximately 2. A second wall portioll 22 extends away from a second longitudinal edge of the inner wall portion 14 ` and at right angles thereto. The first wall portion 20 and the second wall portion 22 and interconnected by an intermediate wall portion 24, the intermediate wall portion extending sub-stantially parallel to the outer and inner walls 12 and 14.
A front wall 26 is connected to the outer wall 12 along one longitudinal edge of the outer wall. The front wall 26 is spaced slightly outwardly from the first wall portion 20 and extends in the same direction as the first wall portion - `
away from the outer wall 12, terminating at a location sub-stantially in alignment with the intermediate wall portion 24.
The front wall 26 is inclined towards the first wall portion 20, the angle between the front wall 26 and the outer wall 12 being slightly less than 90, where angle B in Figure 1 is approximately 4.
The first wall portion 20, the front wall 26, and the portion of the outer wall 12 joining the two wall sections define an elongated narrow channel 28 having an entrance 30 thereto, the channel widening from the entrance 30 to a base portion thereof at the inner surface of the outer wall 12.
; The narrow channel 28 receives an outer edge of a first aluminium window section Sl, the window section Sl having aluminium frame members extending about the periphery thereof.
Each aluminium member 32, shown in phantom in Figure 2, has a peripheral projecting portion 34 which is received in the channel 28 between the first wall portion 20 and the front wall 26, as described in further detail below. Since the aluminium frame members about the periphery of the first window section Sl each have a similar outwardly projecting peripheral portion 34, the thermal break 10 as shown in Figures 1 and 2 can be utilized about the entire periphery of the first aluminium window section Sl for joining it to a second aluminium window section S2. Likewise, window section S2 is formed fro,~
aluminium extru.sions 36, each extrusion having a similar projecting portion which snaps into locking engagement with thermal barrier 10, as describe~ below.
As noted above, the thermal barrier 10 is provided with means for snapping into locking engagement with the second window section S2, about the periphery of the second window section. The snap lock connection is provided by a pair of 10'75534 cooperating projections incorporated in the construction of the thermal break, including a first projection 38 which extends away from an inner surface of the outer wall 12 and is inclined towards the rear wall 16, the projection 38 being at an angle less than 90 to the outer wall 12, where angle C as indicated in Figure 1 is approximately 14. The projection 38 has a rounded end 40 which slidingly engages the cooperating projecting portion of the aluminium extrusion and facilitates insertion of the projecting portion of the aluminium extrusion into a channel 39 defined by the projection 38 and an adjacent section of the rear wall 16. -A cooperating projection 42, integral with the rear wall 16, extends away from the rear wall 16 at an angle D
which is approximately 40, and in a direction towards the outer wall 12. The projection 42, which has converging side surfaces away from the rear wall, meets the rear wall 16 at a location in alignment with and spaced apart from the rounded end 40 of the projection 38. The projections 38 and 42 are continuous along the entire length of the thermal break 10, although such need not be the case in order to provide a -~
thermal break within the scope of the present invention.
~ ~s best seen in Figure 2, the aluminium window section S2 includes an aluminium extrusion 36 which has a projecting portion 46 having an inverted L-shaped configuration in cross-section, the projecting portion engaging in the channel portion 39 of the thermal barrier. As the thermal barrier is forced into engagement with the frame members of the second window section, the projecting portion 46 enters the channel 39, urging the projection 38 outwardly, as indicated by arrow 48 and, by means of the outwardly directed end portion 47 of the projecting portion 46, urging the -- S --projection 42 inwardly, as indicated by arrow 49 in Figure 2, After insertion of the projecting portion 46 of the aluminium frame member into the channel 39 between the projections 38 and 42, the projections, due to their resiliency, tend to return towards their initial positions. However, the thickness of the aluminium extrusion is such as to prevent the projec-tions from returning completely to their initial positions, such that the resiliency of the projections 38 and 42 urges the ends of the projections into tight hermetic sealing engage-ment with adjacent surfaces of the aluminium extrusion.
Further, the end of the projection 42 fits beneath the out-wardly directed projecting portion 47 of the aluminium extru-sion so as to prevent removal of the thermal barrier once the -~
same is snapped into position between the two window sections.
Further, the length of the portion 47 is slightly greater than the width of the entrance to the channel portion 39 in order to achieve a tight seal between the rounded end 40 of the projection 38 and the adjacent surface of the aluminium extrusion.
Further, upon urging of the thermal barrier into engagement with the frame members of the first and second window sections, the second wall portion 20 and the front wall portion 26 are urged apart, as indicated by arrows 50 and 52 in Figure 2, thereby providing a tight fit of the aluminium frame within the channel 28. The front wall 26 of the thermal barrier 10 is exposed to the outside and, by pro-viding a tight seal with the adjacent surfaces of the aluminium frame members of the first window section, prevents water and air infiltration therebetween. Additionally, the intermediate wall portion 24 of the stepped wall section is urged inwardly as indicated by arrow 54, thereby placing the stepped wall section and particularly the intermediate wall portion 24 thereof in compression, thereby applying pressure toward the rear wall 16. As a result, the thermal break 10 provides a hermetic sealing joint between the thermal barrier and the aluminium -~
frame members of the first and second window sections Sl and S2, as well as providing a locking snap fit between the thermal barrier and the second window section S2, preventing either accidental or intentional removal of the barrier 10. Further, the compressive forces in the thermal barrier 10 after being snapped into engagement with the first and second window sections Sl and S2, renders the thermal break more rigid and the combined window unit more solid. This differs from a sliding fit between existing vinyl strips and between adjacent window sections which cannot be mitered and can be removed after insertion, as well as requiring special channel configurations for the fitting of the sliding extrusion.
me thermal barrier 10 is extruded from plastic, prefer-ably vinyl, and is of substantially constant thickness through-out, but for the projection 42 which is of tapered configuration, narrowing along its length from the connection to the rear wall 16. Subsequent to extrusion, the vinyl strip is cut to the size requirements of the window in association with which it is to be used. Mitered connections can be provided at the ends in order to provide a better fit at the corners of the therrnal barrier, thereby further prevent air or water infiltration therebetween.
This is a further advantage over existing thermal barriers which slidingly engage cooperating channels of two window sections since mitered ends cannot be employed. As well in conventional aluminium window units, when a sliding fit is provided between the thermal break and the aluminium window sections, the barrier can be either accidentally or intention-ally removed, neither of which situation is desirable.
Claims (9)
1. An improved thermal barrier of one-piece construction adapted to provide a locking and hermetically sealing joint between two aluminum window sections comprising:
an outer wall; an inner wall extending substantially parallel to the outer wall and spaced apart therefrom; a rear wall and a stepped wall interconnecting the outer wall and the inner wall, the stepped wall being spaced apart from the rear wall; a front wall spaced apart from an adjacent portion of the stepped wall; a portion of the outer wall interconnecting the stepped wall and the front wall; the front wall, the adjacent portion of the stepped wall, and the portion of the outer wall interconnecting the front wall and the stepped wall defining an elongated channel portion therebetween;
a first projection extending from the outer wall toward the inner wall, the first projection being spaced out-wardly from the rear wall and converging toward the rear wall, the first projection and an adjacent portion of the rear wall defining a channel therebetween; and a second projection extending away from a rear surface of the rear wall toward the outer wall, the second projection having an outer edge spaced apart from the first projection and terminating at a location within the channel defined between the rear wall and the first projection.
an outer wall; an inner wall extending substantially parallel to the outer wall and spaced apart therefrom; a rear wall and a stepped wall interconnecting the outer wall and the inner wall, the stepped wall being spaced apart from the rear wall; a front wall spaced apart from an adjacent portion of the stepped wall; a portion of the outer wall interconnecting the stepped wall and the front wall; the front wall, the adjacent portion of the stepped wall, and the portion of the outer wall interconnecting the front wall and the stepped wall defining an elongated channel portion therebetween;
a first projection extending from the outer wall toward the inner wall, the first projection being spaced out-wardly from the rear wall and converging toward the rear wall, the first projection and an adjacent portion of the rear wall defining a channel therebetween; and a second projection extending away from a rear surface of the rear wall toward the outer wall, the second projection having an outer edge spaced apart from the first projection and terminating at a location within the channel defined between the rear wall and the first projection.
2. A thermal barrier according to claim 1, wherein the stepped wall includes a first wall portion extending away from the outer wall toward the inner wall, and a second wall portion extending away from the inner wall toward the outer wall, the first and second wall portions being inter-connected by an intermediate wall portion.
3. A thermal barrier according to claim 2, wherein the first wall portion is of a length substantially equal to a length of the front wall.
4. A thermal barrier according to claim 2, wherein the intermediate wall portion extends parallel to the outer wall.
5. A thermal barrier according to claim 1, wherein the rear wall extends at right angles to the outer wall,
6. A thermal barrier according to claim 2, wherein the first wall portion forms an angle of greater than 90° with a portion of the outer wall joining the rear wall and the stepped wall and the intermediate wall portion extends substantially parallel to the inner and outer walls.
7, A thermal barrier according to claim 5, wherein the front wall and the outer wall define an angle of less than 90°
therebetween.
therebetween.
8. A thermal barrier according to claim 7, wherein the angle between the first wall portion and the outer wall is approximately 92° and the angle between the outer wall and the front wall is approximately 86°.
9, A thermal barrier according to claim 1, wherein an angle between the outer wall and the first projection is approximately 76°.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA301,822A CA1075534A (en) | 1978-04-24 | 1978-04-24 | Window thermal barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA301,822A CA1075534A (en) | 1978-04-24 | 1978-04-24 | Window thermal barrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1075534A true CA1075534A (en) | 1980-04-15 |
Family
ID=4111321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA301,822A Expired CA1075534A (en) | 1978-04-24 | 1978-04-24 | Window thermal barrier |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1075534A (en) |
-
1978
- 1978-04-24 CA CA301,822A patent/CA1075534A/en not_active Expired
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