TILT AND TURN OR FIXED FRAME WINDOW WITH APPEARANCE OF TRADITIONAL SINGLE-HUNG OR DOUBLE-HUNG WINDOW FROM EXTERIOR

Abstract

In a tilt and turn or fixed frame window, a meeting rail unit is provided in the sash unit, dividing the sash unit vertically into an upper sash portion and a lower sash portion, the meeting rail unit having an upper portion for securing an upper glazing unit in the upper sash portion, and a lower portion for securing a lower glazing unit in the lower sash portion. An upper glazing unit secured in the upper sash portion of the sash unit, and a lower glazing unit secured in the lower sash portion of the sash unit. The meeting rail unit is configured to provide an offset between the upper glazing unit and the lower glazing unit in a direction perpendicular to the horizontal axis and to the vertical axis. An outside surface of the upper sash portion and an outside surface of the lower sash portion lie on the same plane.

Claims

1. A tilt and turn window, comprising: a frame configured to be fixed to a building structure; a sash unit cooperating with the frame; a tilt mechanism attached to the frame and the sash unit configured to enable the sash unit to tilt about a horizontal axis to permit a top of the sash to tilt inwardly into the building structure to provide an opening between the top of the sash and the frame for ventilation; a turn mechanism attached to the frame and the sash unit configured to enable the sash unit to turn about a vertical axis at one side of the sash unit; a meeting rail unit provided in the sash unit and dividing the sash unit vertically into an upper sash portion and a lower sash portion, the meeting rail unit having an upper portion for securing an upper glazing unit in the upper sash portion, and a lower portion for securing a lower glazing unit in the lower sash portion; an upper glazing unit secured in the upper sash portion of the sash unit; and a lower glazing unit secured in the lower sash portion of the sash unit, wherein the meeting rail unit is configured to provide an offset between the upper glazing unit and the lower glazing unit in a direction perpendicular to the horizontal axis and to the vertical axis, and wherein an outside surface of the upper sash portion and an outside surface of the lower sash portion lie on the same plane.

2. The tilt and turn window according to claim 1, wherein the meeting rail unit is configured to offset the lower glazing unit inwardly with respect to the upper glazing unit in a direction perpendicular to the horizontal axis and to the vertical axis.

3. A fixed frame window, comprising: a frame configured to be fixed to a building structure; a sash unit fixed to the frame; a meeting rail unit provided in the sash unit and dividing the sash unit vertically into an upper sash portion and a lower sash portion, the meeting rail unit having an upper portion for securing an upper glazing unit in the upper sash portion, and a lower portion for securing a lower glazing unit in the lower sash portion; an upper glazing unit secured in the upper sash portion of the sash unit; and a lower glazing unit secured in the lower sash portion of the sash unit, wherein the meeting rail unit is configured to provide an offset between the upper glazing unit and the lower glazing unit in a direction perpendicular to the horizontal axis and to the vertical axis, and wherein an outside surface of the upper sash portion and an outside surface of the lower sash portion lie on the same plane.

4. The fixed frame window according to claim 3, wherein the meeting rail unit is configured to offset the lower glazing unit inwardly with respect to the upper glazing unit in a direction perpendicular to the horizontal axis and to the vertical axis.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG. 1 is a perspective view showing the appearance of a portion of one embodiment of a tilt and turn window according to the present invention, when viewed from what is intended to be the exterior side.

[0017] FIG. 2 is a front elevational view of a first embodiment of the present invention as viewed from what is intended to be the interior side. FIG. 2A is an enlarged cross-sectional view taken along line A-A of FIG. 2. FIG. 2B is an enlarged cross-sectional view taken along line B-B of FIG. 2.

[0018] FIG. 3 is a front elevational view of a second embodiment of the present invention as viewed from what is intended to be the interior side. FIG. 3A is an enlarged cross-sectional view taken along line A-A of FIG. 3. FIG. 3B is an enlarged cross-sectional view taken along line B-B of FIG. 3.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Various embodiments of the present invention are described below and illustrated in the accompanying drawings. However, clearly the present invention can be accomplished with other designs as would be appreciated by those skilled in the art based on this disclosure. Therefore, the following embodiments are only exemplary and are not intended to limit the scope of the invention set forth in the claims.

[0020] The present invention provides a tilt and turn window or fixed frame window with a meeting rail unit configured to provide an offset between the upper glazing unit and the lower glazing unit in a direction perpendicular to the horizontal axis and to the vertical axis. This simulates a meeting rail that is common on single and double-hung windows. That is, when viewed from the exterior side of a building so equipped, the offset mimics the appearance of the offset (inset) lower sash common to single-hung and double-hung windows. FIG. 1 is a perspective view, when viewed from what is intended to be the exterior side, showing the appearance of one embodiment of a tilt and turn or fixed frame window 1 according to the present invention in which the lower glazing unit 2 is offset with respect to the upper glazing unit 4 in a direction perpendicular to the horizontal axis and to the vertical axis. According to this embodiment, the lower glazing unit 2 is offset inwardly with respect to the upper glazing unit 4 in a direction perpendicular to the horizontal axis and to the vertical axis to provide the tilt and turn or fixed frame window 1 with the appearance of a traditional single-hung or double-hung window from the exterior of a building. Of course, if desired, the lower glazing unit 2 can be offset outwardly with respect to the upper glazing unit 4 in a direction perpendicular to the horizontal axis and to the vertical axis.

[0021] According to a first embodiment of the present invention, shown in FIGS. 2, 2A and 2B, a conventional tilt and turn window, e.g., the REHAU System 4500 tilt & turn window, or a conventional fixed frame window is modified with two extruded profiles to create the simulated single-hung or double-hung aesthetic. According to a second embodiment of the present invention, shown in FIGS. 3, 3A and 3B, a single extruded profile is used to perform the same function. Other designs are possible as would be appreciated by those skilled in the art based on this disclosure.

[0022] In both embodiments of the present invention, the window 1 includes a frame 6 configured to be installed into an opening in a wall or the like a building structure as is well-known in the art. A sash unit 8 cooperates with the frame 6 when the window 1 is a tilt & turn window and is fixed in the frame 6 when the window 1 is fixed frame window. A meeting rail unit 9 provided in the sash unit 8 divides the sash unit 8 vertically into an upper sash portion 8a and a lower sash portion 8b. The meeting rail unit 9 has an upper portion for securing an upper glazing unit 4 in the upper sash portion 8a, and a lower portion for securing a lower glazing unit 2 in the lower sash portion 8b such that the upper glazing unit 4 is secured in the upper sash portion 8a of the sash unit 8; and a lower glazing unit 2 is secured in the lower sash portion 8b of the sash unit 8.

[0023] In the tilt and turn embodiments, a tilt mechanism is attached to the frame 6 and the sash unit 8 configured to enable the sash unit 8 to tilt about a horizontal axis to permit a top of the sash to tilt inwardly into the building structure to provide an opening between the top of the sash 8 and the frame 6 for ventilation. In the tilt and turn embodiments, a turn mechanism is attached to the frame 6 and the sash unit 8 configured to enable the sash unit 8 to turn about a vertical axis at one side of the sash unit 8. Any tilt and turn mechanism can be used, such as well-known tilt and turn mechanisms being conventionally used by applicant and others, e.g., the known tilt and turn mechanism described in U.S. Pat. No. 3,911,621 to McHeffey, the contents of which are incorporated herein by reference.

[0024] In the embodiments of the present invention exemplified in the drawings, an outside surface 10a of the upper sash portion 8a and an outside surface 10b of the lower sash portion 8b lie on the same plane 11. Additionally, in the embodiments of the present invention exemplified in the drawings, an outside surface 10c of the meeting rail unit 9 also lies on the same plane 11 as the outside surface 10a of the upper sash portion 8a and the outside surface 10b of the lower sash portion 8b.

[0025] As previously noted, the meeting rail unit 9 has an upper portion for securing an upper glazing unit 4 in the upper sash portion 8a, and a lower portion for securing a lower glazing unit 2 in the lower sash portion 8b such that the upper glazing unit 4 is secured in the upper sash portion 8a of the sash unit 8; and a lower glazing unit 2 is secured in the lower sash portion 8b of the sash unit 8. The first embodiment of the invention, shown in FIGS. 2, 2A and 2B, uses two profiles described below to accomplish this. One profile or glazing rebate filler, 12 is cut into four pieces; two verticals and two horizontals, and are inserted into the window sash below the horizontal “t”-mullion. This profile or glazing rebate filler 12, when inserted, provides, e.g., a 1 3/16″ (29.8 mm) offset and provides a surface for placing and sealing the lower glazing unit 2. This creates the offset from the upper glazing unit 4 to the lower glazing unit 2.

[0026] A second profile, or glazing rebate extension, 14 is also cut into four pieces, miter cut to 45° on the ends, and snaps into the channel of the sash and the t-mullion otherwise used for the glazing stop on a standard window. The profile essentially extends the glazing stop channel 20 mm to the interior side of the sash which is required due to the offset created by the aforementioned glazing rebate filler profile 12. The combination of these two profiles 12, 14 allows the use of the same insulated glazing unit thickness (1.00″/25.4 mm) in both top and bottom openings.

[0027] In a second embodiment of the invention shown in FIGS. 3, 3A and 3B, only one extruded PVC profile 16 will take the place of both of the profiles 12, 14 described in the first embodiment. This single profile 16 will be measured to fit the dimensions of the opening below the t-mullion, they will be miter cut (45°) on each end into four pieces and will then be fusion welded to form a “sub-sash.” Normal procedures for cleaning/processing the welded corners for proper fit and appearance will be followed and the finished “sub-frame” would be fitted into the space below the horizontal t-mullion. The “sub-sash” would then be sealed with silicone to prevent air and water leakages and secured with screws into the sash and t-mullion. Standard REHAU glazing procedures would then be followed to complete the assembly. The offset from the upper, exterior glass pane to the lower, exterior glass pane on this solution is slightly less at 0.911″ (23.1 mm).

[0028] The present invention has the advantage that, starting with a conventional tilt & turn window, e.g., one of several European inspired, high performance REHAU tilt & turn window designs, and a few simple additional profiles, any of these can be transformed to resemble a traditional, North American style single or double-hung window when viewed from the exterior of a home or building. This simulated hung window retains all of the benefits of a tilt-turn window (high structural and thermal efficiency, twin, full perimeter compression type weather-seals, easy and safe cleaning of exterior glass surfaces from inside) while not requiring additional machinery or special tooling to a typical window fabricator's workshop. In addition, the simulated hung tilt-turn window provides the traditional aesthetics of a hung window without the functional and performance drawbacks from which many single & double-hung windows on the market suffer.

[0029] The present invention allows a manufacturer to build normal tilt & turn windows, consisting of a frame with four miter cut and fusion welded profiles, and a sash, also with four miter cut and fusion welded profiles. Those windows are completed by installing the off-the-shelf hardware mechanisms and then installing one insulated glass unit held in with a glazing stop profiles.

[0030] By adding a few small profiles to a fabricator's inventory, those same tilt & turn windows can be configured to make them resemble hung-sash windows when the specifications call for it. The following simple additional steps are required: [0031] By cutting/processing and installing a middle mullion bar, divides the one large glass opening into two small ones. [0032] The upper small glass opening would be finished by installing an insulated glass unit and glazing stop profiles. [0033] The lower small glass opening would receive four pieces of “glazing rebate extension” profile, as well as four pieces of “glazing rebate filler” profile. These profiles create the 30 mm offset in the glazing channel necessary to give the finished window the appearance of a hung-sash window when viewed from the exterior of a building.

[0034] One unique feature of the present invention is that it would also allow existing tilt-turn windows with one glass unit to be converted into “simulated hung” windows, substituting the single glass for two using the simple steps above.

[0035] While two exemplary embodiments of the present invention are described above and illustrated in the accompanying drawings, clearly the present invention can be accomplished with other designs as would be appreciated by those skilled in the art based on this disclosure.

[0036] For example, while the foregoing embodiments are described with respect to a tilt and turn window, they can also be applied to a fixed frame window as would be appreciated by those skilled in the art based on this disclosure.

[0037] While the drawings shown preferred embodiments of the profiles and internal walls/webs of the window frame and sash, any suitable profiles and internal walls/webs can be used as would be appreciated by those skilled in the art based on this disclosure.

[0038] Also, while the embodiments above describe particular offsets, the offset distance can be adjusted based on the desired aesthetics. As an example only, the offset distance can be adjusted to a range of ¾ to 3″ (19 to 76.2 mm), preferably 1 to 2″ (25.4 to 50.8 mm).