CA2844650A1 - Upward folding window - Google Patents
Upward folding window Download PDFInfo
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- CA2844650A1 CA2844650A1 CA 2844650 CA2844650A CA2844650A1 CA 2844650 A1 CA2844650 A1 CA 2844650A1 CA 2844650 CA2844650 CA 2844650 CA 2844650 A CA2844650 A CA 2844650A CA 2844650 A1 CA2844650 A1 CA 2844650A1
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- sash
- window
- sashes
- inward
- header
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Abstract
A double hung window includes upper and lower window sashes in a window frame including a header, sill, and a vertical jamb on each side. The upper sash is connected to the header for inward pivotal movement on a horizontal axis. The lower sash is connected to the upper sash for reverse pivotal movement, on a parallel horizontal axis, whereby to fold the lower sash up and under the upper sash. A framed screen, separate from the window sashes, is mounted on the outer face of the window frame. A tape balance atop the frame applies a lifting force to the lower sash. Grasp and inward pull of a handle pulls lower and upper sashes inward from a dead centeer condition, thereby enabling the tape balance to effectively assist in pulling the sashes upward. The window sashes are together fully openable inward, with upper and lower sashes folded to each other in a horizontal attitude extending inward from the header;
Description
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Upward Folding Window Background of the Invention Field of the Invention:
This invention relates to window structure, and specifically to a foldable window structure that is collapsible upward upon itself to open the window. Its purposes are to enhance one's view by removing window structure from the field of view, to open living spaces wide to the outdoors for air flow, and when necessary to provide fully-open egress through the window.
With a conventional window, whether it is open or closed, some of its structure interferes with, and to some extent impairs, the field of view through the window.
The window of this invention, when closed, has the appearance of a traditional double hung window so it blends seamlessly into traditional architecture. Its sashes are weight-balanced to maintain their positions at any intermediate open position. When fully open, the sashes do not obstruct or interfere with adjacent living space or with the field of view through the window.
Prior Art:
Traditional prior art double hung windows have upper and lower sashes, separate from each other and independently slidable up and down. Inherently, such a window cannot be more than half open.
Some double hung windows have upper and lower sashes which are removable for cleaning and maintenance. Removal of sashes and stowing them somewhere out of the way is not a practical way to clear or enhance the view through such a window.
The most relevant prior art known to us is described in a U.S. Patent Application of Christian Guillemette; Pub. No. 2012/0117882; published May 17, 2012. The relevance of Guillemette is more clearly seen below, near the end of the Detailed Description.
Summary of the Invention An object of this invention is to provide a window with the appearance of a traditional double hung window when closed, and which is virtually fully openable.
In summary, this invention is a double hung window with upper and lower sashes in a window frame. The upper sash is pivotally connected to the frame header for inward pivotal movement on a horizontal axis. The lower sash is pivotally connected to the upper sash for reverse pivotal movement on a parallel horizontal axis, whereby to fold the lower sash up and under the upper sash. A framed screen, separate from the window sashes, is mounted on the outer face of the window frame. A tape balance atop the frame applies an upward force to the lower sash. Manual inward pull of the upper rail of the lower sash pulls the sashes inward together from their vertical closed condition, thereby enabling manual upward movement of the sashes with an assist from the tape balance. The window sashes are together fully openable inward, with upper and lower sashes folded to each other in a horizontal attitude extending inward from the header;
Drawings In the accompanying drawings:
FIG. 1 is a front view, looking outward, of a window of this invention.
FIG. 2 is a view from the right side FIG. 1, on the plane 2-2 of FIG. 1.
FIG. 2A is an enlarged perspective view of the circled portion of FIG. 2.
FIG. 3 is a view, similar to FIG. 2, of the window in a stage of its upward folding.
FIG. 4 is a view, similar to FIG. 3, of the window in a further stage of its upward folding.
FIG. 5 is a view, similar to FIG. 4, of the window now fully open.
FIG. 6 is a view similar to FIG. 1, showing the window fully open.
FIG. 7 is an enlarged plan view on the plane 7 at the left end of FIG. 1.
Detailed Description With reference now to FIGS. 1 and 2, a window 10 includes a lower sash 11 and upper sash 12, each sash including muntins 14 dividing the sashes into individual panes or pane areas 13. Sashes 11, 12 are mounted in a window frame 20 which includes a window sill 21, a top header 22, and a vertical jamb 23 on each side. In FIG. 1, the closed window 10 has the aesthetic appearance of a traditional double hung window.
Reference is now to FIGS. 2-6 and FIG. 2A. A screen 62, in a frame of top 60, bottom 61, and side members 64, is mounted on the outer face of the window 10, the right side of the drawing figures. The screen 62 in FIG. 6 is omitted from FIG. 1 only for the sake of FIG. 1 clarity. The screen frame 60, 61, 64 is removably mounted and secured in the window frame 20 by fasteners or other standard devices which are well known in the art.
Reference is now primarily to FIGS. 2-5. The upper sash 12 of the window 10 is connected to the frame header 22 by a hinge 30 for inward pivotal movement on a horizontal axis 31 relative to the window frame 20. This pivotal movement is clockwise, inward and upward, as indicated by the arrow A in FIGS. 3, 4.
Upward Folding Window Background of the Invention Field of the Invention:
This invention relates to window structure, and specifically to a foldable window structure that is collapsible upward upon itself to open the window. Its purposes are to enhance one's view by removing window structure from the field of view, to open living spaces wide to the outdoors for air flow, and when necessary to provide fully-open egress through the window.
With a conventional window, whether it is open or closed, some of its structure interferes with, and to some extent impairs, the field of view through the window.
The window of this invention, when closed, has the appearance of a traditional double hung window so it blends seamlessly into traditional architecture. Its sashes are weight-balanced to maintain their positions at any intermediate open position. When fully open, the sashes do not obstruct or interfere with adjacent living space or with the field of view through the window.
Prior Art:
Traditional prior art double hung windows have upper and lower sashes, separate from each other and independently slidable up and down. Inherently, such a window cannot be more than half open.
Some double hung windows have upper and lower sashes which are removable for cleaning and maintenance. Removal of sashes and stowing them somewhere out of the way is not a practical way to clear or enhance the view through such a window.
The most relevant prior art known to us is described in a U.S. Patent Application of Christian Guillemette; Pub. No. 2012/0117882; published May 17, 2012. The relevance of Guillemette is more clearly seen below, near the end of the Detailed Description.
Summary of the Invention An object of this invention is to provide a window with the appearance of a traditional double hung window when closed, and which is virtually fully openable.
In summary, this invention is a double hung window with upper and lower sashes in a window frame. The upper sash is pivotally connected to the frame header for inward pivotal movement on a horizontal axis. The lower sash is pivotally connected to the upper sash for reverse pivotal movement on a parallel horizontal axis, whereby to fold the lower sash up and under the upper sash. A framed screen, separate from the window sashes, is mounted on the outer face of the window frame. A tape balance atop the frame applies an upward force to the lower sash. Manual inward pull of the upper rail of the lower sash pulls the sashes inward together from their vertical closed condition, thereby enabling manual upward movement of the sashes with an assist from the tape balance. The window sashes are together fully openable inward, with upper and lower sashes folded to each other in a horizontal attitude extending inward from the header;
Drawings In the accompanying drawings:
FIG. 1 is a front view, looking outward, of a window of this invention.
FIG. 2 is a view from the right side FIG. 1, on the plane 2-2 of FIG. 1.
FIG. 2A is an enlarged perspective view of the circled portion of FIG. 2.
FIG. 3 is a view, similar to FIG. 2, of the window in a stage of its upward folding.
FIG. 4 is a view, similar to FIG. 3, of the window in a further stage of its upward folding.
FIG. 5 is a view, similar to FIG. 4, of the window now fully open.
FIG. 6 is a view similar to FIG. 1, showing the window fully open.
FIG. 7 is an enlarged plan view on the plane 7 at the left end of FIG. 1.
Detailed Description With reference now to FIGS. 1 and 2, a window 10 includes a lower sash 11 and upper sash 12, each sash including muntins 14 dividing the sashes into individual panes or pane areas 13. Sashes 11, 12 are mounted in a window frame 20 which includes a window sill 21, a top header 22, and a vertical jamb 23 on each side. In FIG. 1, the closed window 10 has the aesthetic appearance of a traditional double hung window.
Reference is now to FIGS. 2-6 and FIG. 2A. A screen 62, in a frame of top 60, bottom 61, and side members 64, is mounted on the outer face of the window 10, the right side of the drawing figures. The screen 62 in FIG. 6 is omitted from FIG. 1 only for the sake of FIG. 1 clarity. The screen frame 60, 61, 64 is removably mounted and secured in the window frame 20 by fasteners or other standard devices which are well known in the art.
Reference is now primarily to FIGS. 2-5. The upper sash 12 of the window 10 is connected to the frame header 22 by a hinge 30 for inward pivotal movement on a horizontal axis 31 relative to the window frame 20. This pivotal movement is clockwise, inward and upward, as indicated by the arrow A in FIGS. 3, 4.
The lower sash 11 is similarly connected to the bottom of sash 12 by a hinge 32 for pivotal movement on a horizontal axis 33 relative to the upper sash 12. This pivotal movement is counter-clockwise, upward toward the upper sash 12, as indicated by the arrow B in FIGS. 3, 4.
As can be seen in FIGS. 2-6, the screen 62 stays in place independently of, and unaffected by, the opening and closing operation of the window sashes 11, 12.
Left and right tape balances 41, 42 are mounted at top left and top right of the window frame 20. Each tape balance includes an extensible tape 43, wound in tension and extending from their housings down along their respective jambs 23, for connection with left and right bottom ends of the lower sash 11.
Referring now also to FIG. 7, the tapes are in tension, urging the sash 11 upward. The lower sash 11 includes left and right pins 50 extending sideways out from respective bottom corners.
These pins engage guide tracks 51 in their respective jambs, which guide the pins 50 in their up and down movements. In short, the pins and guide tracks keep the lower sash in line between left and right jambs 23. Left and right tapes 43 are connected to respective left and right sash pins 50 to move up and down with the pins 50 and lower sash 11.
Hand grips 25 at the top of the lower sash 11 facilitate the start of window opening action.
The double-hung embodiment of our invention is different from the above-referenced application of Guillemette, with several attendant benefits vis-a-vis Guillemette.
Our window has sashes offset with the proportions, depth, and aesthetics of a traditional double hung window. When the window is closed, the bottom rail of the upper sash is behind, not above, the upper rail of the lower sash, thereby being less obstructive of the window aperture.
Our upfolded sashes are not visible from outside, so our window appears as an open porch.
As a storefront window, whether it is open or closed it does not encroach on the exterior sidewalk right-of-way. A passing pedestrian, no matter how tall, cannot bump into it.
Because our window opens fully, twice the opening of a traditional double hung window, it can be an egress window without loss of aesthetics. This is a design problem that vexes architects who wish to use double hungs in bedrooms where, generally, at least one egress window is required.
The foregoing description of a preferred embodiment of this invention is illustrative. The concept and scope of the invention are not limited by such details but only by the following claims.
As can be seen in FIGS. 2-6, the screen 62 stays in place independently of, and unaffected by, the opening and closing operation of the window sashes 11, 12.
Left and right tape balances 41, 42 are mounted at top left and top right of the window frame 20. Each tape balance includes an extensible tape 43, wound in tension and extending from their housings down along their respective jambs 23, for connection with left and right bottom ends of the lower sash 11.
Referring now also to FIG. 7, the tapes are in tension, urging the sash 11 upward. The lower sash 11 includes left and right pins 50 extending sideways out from respective bottom corners.
These pins engage guide tracks 51 in their respective jambs, which guide the pins 50 in their up and down movements. In short, the pins and guide tracks keep the lower sash in line between left and right jambs 23. Left and right tapes 43 are connected to respective left and right sash pins 50 to move up and down with the pins 50 and lower sash 11.
Hand grips 25 at the top of the lower sash 11 facilitate the start of window opening action.
The double-hung embodiment of our invention is different from the above-referenced application of Guillemette, with several attendant benefits vis-a-vis Guillemette.
Our window has sashes offset with the proportions, depth, and aesthetics of a traditional double hung window. When the window is closed, the bottom rail of the upper sash is behind, not above, the upper rail of the lower sash, thereby being less obstructive of the window aperture.
Our upfolded sashes are not visible from outside, so our window appears as an open porch.
As a storefront window, whether it is open or closed it does not encroach on the exterior sidewalk right-of-way. A passing pedestrian, no matter how tall, cannot bump into it.
Because our window opens fully, twice the opening of a traditional double hung window, it can be an egress window without loss of aesthetics. This is a design problem that vexes architects who wish to use double hungs in bedrooms where, generally, at least one egress window is required.
The foregoing description of a preferred embodiment of this invention is illustrative. The concept and scope of the invention are not limited by such details but only by the following claims.
Claims (4)
1. A double hung window including upper and lower window sashes disposed in a window frame;
said window frame including a header, sill, and left and right jambs; said sashes each including top, bottom, and side portions;
said upper sash depending from said header, and pivotally connected thereto for inward and upward pivotal movement on a horizontal axis relative to said window frame;
said lower sash depending from said upper sash, and pivotally connected thereto for pivotal movement on a horizontal axis relative to said upper sash, whereby to fold said lower sash up and under said upper sash;
a framed screen removably mounted on said window frame outward of said upper and lower sashes, said screen being independent of, and out of the way of, said movements of said sashes;
said window sashes being substantially fully openable inward, with said upper and lower sashes folded to each other in a horizontal attitude extending inward from said header;
said window frame including a header, sill, and left and right jambs; said sashes each including top, bottom, and side portions;
said upper sash depending from said header, and pivotally connected thereto for inward and upward pivotal movement on a horizontal axis relative to said window frame;
said lower sash depending from said upper sash, and pivotally connected thereto for pivotal movement on a horizontal axis relative to said upper sash, whereby to fold said lower sash up and under said upper sash;
a framed screen removably mounted on said window frame outward of said upper and lower sashes, said screen being independent of, and out of the way of, said movements of said sashes;
said window sashes being substantially fully openable inward, with said upper and lower sashes folded to each other in a horizontal attitude extending inward from said header;
2. A double hung window as defined in claim 1, further including a handle on said top portion of said lower sash with which to manually initiate said inward pivotal movement.
3. A double hung window as defined in claim 2, further including balancing means extending from said window frame and connected in tension to said lower sash to urge said lower sash upward, thereby to assist said pivotal movements.
4. A double hung window, including upper and lower window sashes disposed in a window frame having a horizontal top header, a horizontal bottom sill, and a vertical jamb on each side;
said upper sash connected to said top header for inward pivotal movement on a horizontal axis relative to said frame;
said lower sash connected to said upper sash for reverse pivotal movement on a horizontal axis relative to said upper sash, whereby to fold said lower sash up and under said upper sash;
means to grasp said lower sash to pull said lower and upper sashes inward, thereby to initiate said folding movements; and left and right tape balances disposed atop said frame, each including a tape extending therefrom down along respective left and right jambs and operatively connected to said lower sash to urge said lower sash upward, thereby to assist said pivotal movements.
said upper sash connected to said top header for inward pivotal movement on a horizontal axis relative to said frame;
said lower sash connected to said upper sash for reverse pivotal movement on a horizontal axis relative to said upper sash, whereby to fold said lower sash up and under said upper sash;
means to grasp said lower sash to pull said lower and upper sashes inward, thereby to initiate said folding movements; and left and right tape balances disposed atop said frame, each including a tape extending therefrom down along respective left and right jambs and operatively connected to said lower sash to urge said lower sash upward, thereby to assist said pivotal movements.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201313986497A | 2013-05-09 | 2013-05-09 | |
| US13/986,497 | 2013-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2844650A1 true CA2844650A1 (en) | 2014-11-09 |
Family
ID=51894336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2844650 Pending CA2844650A1 (en) | 2013-05-09 | 2014-03-05 | Upward folding window |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2844650A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10208528B2 (en) | 2015-09-15 | 2019-02-19 | Caldwell Manufacturing Company North America, LLC | Fold-up window hardware |
-
2014
- 2014-03-05 CA CA 2844650 patent/CA2844650A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10208528B2 (en) | 2015-09-15 | 2019-02-19 | Caldwell Manufacturing Company North America, LLC | Fold-up window hardware |
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