Patent Application
20060150519
The present invention relates to an aesthetically appealing window jamb liner mountable in the side jambs of a double hung window for securing window sash assemblies.
In a double hung window, the window sashes are typically secured to a window frame by window jambs located on the sides of the window frame. Window jambs also function to create a seal between the window sash and the window frame to prevent moisture from leaking into the interior of the window frame when the window is closed. This sealing function is particularly important in double hung window assemblies where an upper sash and a lower sash can be moved up and down to either open or close the window.
Though many window jambs adequately secure and seal window sashes to the window frame, little attention has been focused on the appearance of window side jambs until recently. To some purchasers of window frames and sashes, the appearance of a window can be as equally important as how well it functions. Unfortunately, an appealing appearance is often lacking in most side jambs, mostly due to the portion of the side jamb known as the jamb liner.
The jamb liner is the component of the side jambs that provides many of the functional aspects of a window jamb, including forming sash tracks in which the window sashes can vertically slide to open and close the window. In a double hung window, the sash tracks for the two window sashes are separated on each side by the jamb liner. Therefore, the jamb liner, and particularly the piece of the jamb liner that separates the sash tracks, plays a large role in the overall appearance of a window assembly. Despite this, jamb liners are often extruded from a piece of metal or plastic and therefore do not match or even blend in with the rest of the inner portions of the window frame which is often made of wood.
Other attempts have been made to design a window assembly that provides an aesthetically appealing window jambs. U.S. Pat. No. 6,305,126 (Hendrickson et al.) describes a window jamb component assembly mountable in a jamb of a double hung window that includes a jamb liner having upper and lower segments, channel guides spaced apart by a profiled web, and upper and lower sash assemblies. The profiled web defines a jamb filler recess, an inner weather stripping recess and an outer weather stripping recess.
The jamb fillers that are retained by each of the jamb filler recesses each have a length substantially the same as the length of one of the window sash assemblies. Therefore, each jamb recess typically contains an upper and a lower jamb filler. The frame weather stripping is secured to the window assembly via weather stripping recesses located in the profiled web.
U.S. Pat. No. 6,122,864 (Martin) describes a window assembly that includes a jamb filler that extends the full height of the jamb liner. A weather-strip is attached to substantially the entire exposed surface of the jamb filler.
It is the object of the present invention to provide a window assembly for a double hung window that includes an aesthetically appealing jamb liner that functions to secure window sash assemblies in a window frame and to seal moisture out of the interior of the window frame when the window is closed.
The present invention is directed to a double hung window assembly that includes upper and lower sash assemblies each having a sash height, opposing side jambs, a pair of opposing jamb liners that have a jamb liner length generally equal to a length of the opposing side jambs. Sash tracks are located on each of the jamb liners securing the upper and lower assemblies to the opposing side jambs. At least one jamb recess is located between the sash tracks on each of the jamb liners. The double hung window assembly also includes a pair of jamb fillers each having a length generally equal to the jamb liner length and retained in each of the jamb recesses. Each jamb filler has an outer weather stripping recess and an inner weather stripping recess. An outer weather stripping, having a length generally equal to the height of the upper sash assembly, is attached in the outer weather stripping recess. An inner weather stripping, having a length generally equal to the height of the lower sash assembly, is attached in the inner weather stripping recess. In one embodiment, the jamb filler also includes a primary exposed surface that is substantially unobstructed by the inner and outer weather stripping. In another embodiment, a portion of the outer and inner weather stripping is compressively secured between the jamb filler and a portion of the jamb liner.
In one embodiment the jamb fillers of the window assembly are releasably attached to the jamb recesses. In another embodiment the jamb fillers form a compressive relationship with the jamb recesses.
Preferably, the jamb filler of the window assembly substantially fills the jamb recess. In one embodiment, the jamb filler is formed of substantially the same material as an inner trim of the window assembly. In another embodiment, the jamb filler is formed of wood.
Preferably the inner and outer weather stripping recesses are generally parallel to the primary exposed surface of the jamb filler. In one embodiment, the inner and outer weather stripping recesses are located along a side edge of the jamb filler. The inner and outer weather stripping recesses generally may be perpendicular to a pull direction along which the weather stripping is removed. In another embodiment, the inner weather stripping recess is located in a lower portion of the jamb filler. And in still another embodiment, the outer weather stripping recess is located in an upper portion of the jamb filler.
In one embodiment a portion of the outer and inner weather stripping is compressively secured between the jamb filler and a portion of the jamb liner. In another embodiment a portion of the outer and inner weather stripping is trapped between the jamb filler and a portion of the jamb liner. In still another embodiment, the inner and outer weather stripping can not be removed from the jamb filler unless the jamb filler is removed from the jamb recess.
In one embodiment, a protective cover is attached to the jamb filler along a lower portion of the jamb filler and has a length generally equal to the height of the lower sash. In another embodiment, the protective cover is substantially similar in appearance to an outer trim of the window assembly. In still another embodiment the protective cover is formed from one of plastic cladding, aluminum cladding, paint, polyurethane, and stain.
The present invention is also directed to a method of manufacturing a double hung window assembly. In one step of the invention a pair of opposing jamb liners is positioned in opposing side jambs of the window assembly. Each jamb liner has a length generally equal to a length of the opposing side jambs. In another step of the invention, upper and lower sash assemblies, each having a sash height, is positioned in sash tracks formed in the opposing jamb liners. In still another step of the invention, a pair of jamb fillers is provided. Each jamb filler has a length generally equal to the jamb liner length and has an outer weather stripping recess and an inner weather stripping recess. In yet another step of the invention, an outer weather stripping having a length generally equal is attached to the height of the upper sash assembly to the outer weather stripping recess. In another step, an inner weather stripping having a length generally equal to the height of the lower sash assembly is attached to the inner weather stripping recess. The jamb filler comprises a primary exposed surface that is substantially unobstructed by the inner and outer weather stripping. In still another step, the jamb liner is releasably secured in a jamb recesses located between the sash tracks on each of the jamb liners.
In one embodiment of the method of manufacturing a window assembly, the method further includes the step of compressively engaging the jamb filler with the jamb recess.
Preferably, the inner and outer weather stripping recesses are formed generally parallel to the primary exposed surface of the jamb filler. In one embodiment, the method includes the step of forming the inner and outer weather stripping recesses generally perpendicular to a pull direction along which the weather stripping is removed.
In one embodiment, the method further includes the step of compressively securing a portion of the outer and inner weather stripping between the jamb filler and a portion of the jamb liner. In another embodiment, the inner weather stripping is located only along a lower portion of the jamb filler. In still another embodiment, the outer weather stripping is located only along an upper portion of the jamb filler.
The method of the present invention may include the step of removing the jamb filler from the jamb recess before removing the inner and outer weather stripping from the jamb filler.
Preferably, the method includes the step of attaching a protective coating to a lower portion of the jamb filler along a length generally the height of the lower sash. In one embodiment, the step of attaching a protective coating further includes the step of forming the protective coating with substantially the same appearance to outer trim of the window assembly. In another embodiment, the step of attaching a protective coating further includes the step of forming the protective from one of plastic cladding, aluminum cladding, paint, polyurethane, and stain.
The window assembly of the present invention provides for window jambs that impart a visually pleasing finish to the side jambs while functioning to secure window sash assemblies to the window assembly and to seal moisture out of the interior of the window assembly when the window is closed.
a illustrates a cross sectional view taken along the lines 2A-2A of
b illustrates a cross sectional view taken along the lines 2B-2B of
In the illustrated embodiment, the opposing side jambs 16 include the jamb liners 30 illustrated in
Each jamb liner 30 has a jamb liner length 26 that is generally equal to a length of the opposing side jambs 16, as shown in
The jamb liners 30 of the window assembly 10 are each equipped with a jamb recess 40 that extends between the inner sash track 38 and the outer sash track 36 on each of the jamb liners 30. The sash tracks 36, 38 typically include sash interface hardware 35, such as a counterbalance or spring to assist in moving and retaining the sashes 12, 14 in the desired locations.
In the illustrated embodiment, the jamb recess 40 retains a jamb filler 42. Connectors 43, 45 releasably retain the jamb filler 42 in the jamb recess 40. The jamb filler 42 preferably forms a compressive or a snap-fit relationship with the connectors 43, 45. Consequently, the jamb filler 42 can be easily removed and replaced in the field. As used herein, “snap-fit” refers to a mechanical coupling that is achieved by elastic deformation of at least one of the two mating components.
The jamb filler 42 preferably has a length generally equal to the jamb liner length 26. As illustrated in
Each jamb filler 42 preferably includes an inner weather stripping recess 50 and an outer weather stripping recess 44. The weather stripping recesses 50, 44 are preferably located on a side edge of the jamb filler 42. The weather stripping recesses 50, 44 are separated by the width of primary surface 56 on the jamb filler 42. As illustrated in
The inner and outer weather stripping 52, 46 for sealing the sash assemblies preferably includes an elongated foam element, such as for example urethane, connected to a weather stripping base. As illustrated in
Similarly, in
In the embodiment illustrated in
The inner weather stripping 52 generally has a length equal to the lower sash height 24 while the outer weather stripping 46 generally has a length equal to the upper sash height 26, as illustrated in
In operation, as the upper sash 12 is lowered, the amount of surface area of the outer weather stripping 46 engaged with the upper sash 12 is reduced. Hence the fiction between the upper sash 12 and the weather stripping 46 is also reduced, allowing the upper sash 12 to move more easily. Similarly, as the lower sash 14 is raised, the amount of surface area of the inner weather stripping 52 engaged with the lower sash 14 is reduced. Hence the fiction between the lower sash 14 and the weather stripping 52 is also reduced, allowing the lower sash 14 to move more easily.
In the illustrated embodiment, primary exposed surface 56 of the jamb filler 42 is substantially unobstructed by either the inner or the outer weather stripping 52, 46. Although the exposed surface 56 is illustrated as planar, various aesthetic non-planar configurations are within the scope of the present invention. The exposed surface 56 can be located above, below, or co-planar with inner surfaces 31 of the jamb liner 30.
In the illustrated embodiment, the jamb filler 42 includes a primary exposed surface 56 that is substantially unobstructed by either the inner or outer weather stripping 50, 44. The primary exposed surface 56 may either be formed of the surface of the jamb filler 42, as illustrated in
In the illustrated embodiment, the protective cover 60 on the lower portion of the side filler 42 is a cladding. The cladding 60 may be formed of any suitable material such as, for example, extruded plastic or extruded aluminum. In the preferred embodiment, the cladding 60 is formed of a material that is the same as, or provides the substantially the same appearance as, the outer trim 32 of the window assembly 10.
As illustrated in
All patents and patent applications disclosed herein, including those referred to in the Background of the Invention, are hereby incorporated by reference. It will be understood that this disclosure, in many respects, is only illustrative. Changes may be made in details, particularly in matters of shape, size, material, and arrangement of parts without exceeding the scope of the invention. Accordingly, the scope of the invention is as defined in the language of the appended claims and their equivalents.
