Patent Application
20130333294
The present application relates to removable draft blockers and more particularly to a draft blocker adapted to engage the bottom of the window sash.
Homes are generally provided with several windows allowing sunshine into the home and allowing occupants to look outside the home. Double-hung sash windows are popular in the United States. Double-hung sash windows consist of two sashes contained in a rectangular frame. Often, at least the lower sash is movable in the vertical direction allowing one to open and close the window. Sashes usually consist of sash frame material, such as wood, surrounding several glass window panes. The bottom of the lower sash rests against a window sill. Window sills are often wood.
Wooden window frames and wooden sash frames and wooden window sills can shrink and swell with humidity changes and other weather changes. Window frames and window sills are also subject to wear, warpage, misalignment and the like. Thus, the place where the lower sash rests against the window sill is often not an air tight seal and drafts ensue. Such drafts can cause discomfort in the home and increase energy needs in heating and cooling the home.
The exterior of windows is often exposed to environmental elements including rain water, snow, sunlight, wind, and blown and splashed dirt.
Not all home occupants are home owners. Many people rent houses, apartments, condominiums and other structures as living space. Renters, and home owners in some situations, often prefer a removable appliance to address a draft through a window rather than repairing or replacing the window itself.
In accordance with the present disclosure, a removable window draft blocker is provided having an elongate flexible envelope adapted to accommodate resilient bodies in spaced apart parallel relationship and at least one elongate semi-rigid elastic water impervious sleeve adapted to surround one of the resilient bodies contained within the envelope. The draft blocker is adapted to engage the bottom of the window sash to prevent or minimize drafts entering between the window sash and window sill.
Further in accordance with the disclosure, the window draft blocker has two sleeves telescoped one within the other allowing the length of the combined sleeves to be easily adjusted.
Yet further in accordance with the disclosure, the at least two elongate resilient bodies are cylindrical compressible foam bodies and the sleeves are semi-rigid elastic plastic cylinders with a longitudinal slit.
Yet further in accordance with the disclosure, the envelope portion of the draft blocker is rectangular in shape and constructed from a non-wicking fabric such as a nylon spandex blend.
It is the principle object of the present disclosure to provide a window draft blocker which is easily installed, easily removed, easily cleaned and adapted to remain clean even in the portion exposed to the outside elements.
It is another object of the present disclosure to provide a window draft blocker which is easily adjustable to accommodate windows of different widths.
It is another object of the present disclosure to provide a window draft blocker which is durable, attractive, and self-guiding in installation.
It is still another object of the present disclosure to provide a window draft blocker which fits snuggly against the bottom of a window without being crushed by the window sash.
These and other objects of the disclosure will become apparent in the following description of the exemplary embodiment taken together with the accompanying drawings.
The disclosure may take physical form in certain parts and arrangements of parts, examples of which will be described in detail and which are illustrated in the accompany drawings which form a part hereof and wherein:
With reference to
An envelope 20 is generally rectangular in shape with two long edges and two short edges. The envelope 20 is fabricated from flexible sheet like material such as fabric. A rectangle of fabric is folded in half and the two ends which have been brought together are sewn together along most of their length but left disconnected at their center. This creates a first seam 22, a second seam 24, and a central opening 26 between the first seam 22 and the second seam 24. The central opening 26 is finished with overstitching in a manner similar to a button hole in a shirt or coat. The fabric is then realigned so that first and second seams and the central opening are at the center line of the top layer of the envelope with uninterrupted fabric forming the bottom layer. The two open ends of this intermediate are then sewn together forming a third seam 32 and a fourth seam 34. The envelope 20 is now complete. The envelope 20 is closed except for the finished central opening 26. The central opening 26 and the first seam 22 and second seam 24 are disposed in the portion of the envelope which will be located between the window sash 14 and the window sill 12 when the draft blocker 10 is in place and the window is closed. The portions of the envelope which remain visible to the user are seamless and more attractive.
Referring to
The preferred material for the envelope 20 is a textile fabric such as a polyester such as a terylene or a nylon spandex blend. Such fabrics are easily cleaned in a washing machine or by hand. Such fabrics are durable and have some elasticity. The envelope can stretch somewhat and, in the preferred embodiment, will be somewhat stretched and held tight against the bottom of a window sash in installation.
Two cylindrical end caps 54, 56 are shown installed on the ends of the sleeves 46, 48. The end caps are shown in more detail in
The window draft blocker 10 is a consumer product in which two or more elongate resilient bodies, an envelope, two sleeves and two end caps are provided in a package. The consumer cuts the elongate resilient bodies to an appropriate length matching the width of the window with which the appliance is to be used. Two or more of the elongate resilient bodies are placed in the envelope 20 and aligned by manipulation with the hand into spaced apart parallel relationship. The two sleeves 46, 48 are slid onto the envelope and elongate resilient body 42 and adjusted to cover the entire length of one of the parallel elongate resilient bodies. End caps 54, 56 are applied over the ends of the sleeves 46, 48. The assembled window draft blocker is then placed on a sill under the sash of the window to be treated. The sash is brought down into contact with the window draft blocker 10. The user can hold the second elongate resilient body 44 in place on the inside of the window as the sash is lowered. The sash impinges upon the semi-rigid sleeves 46, 48 which have a slick exterior surface. The window sash 14 will push the sleeves 46, 48 outwardly as it descends resulting in proper alignment of the sleeves 46, 48 on the outside of the sash 14. Without the sleeves 46, 48, the sash might come down on the outside resilient body 42 crushing it, rather than having it positioned outside the window.
In this installed position, the envelope 20 is protected from the elements by the sleeves 46, 48 and end caps 54, 56. Because the sleeves and end caps are impervious, should they get dirty, they are simply wiped with a cloth or paper towel restoring a clean appearance. The envelope 20 is fabricated from a fabric which is non-wicking. Moisture will not be drawn into the interior space by wicking action of the envelope.
The appearance of the window draft blocker 10 from the inside of the house is simple and unobtrusive. The exposed surface is entirely the fabric of the envelope 20 with minimal seams on the ends of the envelope only. The fabric for the envelope 20 is selected in an appropriate color and pattern for use in the home. The appearance of the window draft blocker 10 from the exterior is also pleasing in that the appearance is that of the sleeves 46, 48 and end caps 54, 56 exclusively. This is a impervious plastic surface which is of appropriate color and easily kept clean.
Upon becoming soiled or at the end of a particular heating or cooling season, the window draft blocker 10 is easily removed by opening the window sash and picking the draft blocker 10 up. The sleeves 46, 48 and end caps 54, 56 are removed and cleaned. The elongate resilient bodies 42, 44 are removed and the envelope 20 washed. The clean draft blocker 10 can be stored and is ready for use in the next heating or cooling season.
The draft blocker is easily sized to fit various width windows, This is done by cutting the resilient bodies 42, 44 and putting them in the envelope 20. Because the envelope 20 is a flexible fabric with some elasticity, it can fit windows of various widths. Narrow windows can be accommodated by simply wrinkling the envelope. All other components are easily cut or telescoped to a desired length. All components are easily cleaned.
An exemplary embodiment has been described with reference to the preferred components and arrangements of components. Obviously, modifications and alterations will occur to others upon reading and understanding the preceding detailed description. It is intended that the exemplary embodiment be construed as including all such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
