MXPA98010146A - Cover for window to control the step of the - Google Patents

Abstract

The present invention relates to a cover for window (1) has a sheet of material that allows the passage of light, which forms a support sheet (2) and a series of separate strips, generally parallel joined to an edge of the support sheet and joined on an edge opposite an adjacent strip. Each strip contains a portion that prevents the passage of light (12) and a portion that allows the passage of light (1

Description

COVER FOR WINDOW TO CONTROL THE PASSAGE OF THE LIGHT Field of the Invention The invention relates to covers for entana and in particular to a window cover for controlling the passage of light having strips or slats that can be inclined from an open position to a closed position to control the amount of light which is admitted.

BACKGROUND OF THE PRIOR ART Venetian blinds are well known window coverings. They have a series of horizontal slats suspended from ladders which extend between an upper rail and a lower rail. The slats can be rotated between an open position, a position to see through and a closed position. Additionally, blinds can be raised or lowered. Venetian blinds contain aluminum, plastic or wood slats and are available in a limited number of colors. The curtains are another cover for common window. The curtains are available in a variety of materials and colors. Commonly, a designer will provide a transparent curtain, which allows the passage of some light in combination with a thicker curtain through which light can not pass. Consequently, the owner of that curtain system can have a completely open window, a window covered by the transparent curtain, which allows privacy during the day, the passage of some light and the view of the outside; or a window covered by the thickest curtain and a transparent curtain, which allow privacy during the night, little light, and prevent the view from the outside. Window coverings and curtains are often preferred by consumers over Venetian blinds because they have a smoother appearance. However, curtains do not have the ability to coht-t-olar the amount of light transmitted through the window cover in a way similar to lattice blinds like traditional Venetian blinds. Various attempts have been made to provide a window covering with the ability to control the amount of light entering a room. Shapirs in U.S. Patent No. 3,851,699 discloses a drapery for window having separate vertical sections that impede the passage of light and transmit light-sections that prevent the passage of light may be rotated to cover all or portions of light. the sections that allow the passage of light. The sections that impede the passage of light are vertical slats attached to the curtain or tightly woven fabric. The sections that allow the passage of light are open mesh. This product is difficult to operate because the sections that prevent the passage of light tend not to align with the portions that allow the passage of light when those sections are rotated. In U.S. Patent No. 5,313,999 to Colson et al., A window covering having first and second sides of transparent, parallel fabric, and a plurality of slats that impede the passage of light or prevent the passage of light, is described. the light, which extend between the sides of transparent cloth. The slats are angularly controllable by the relative movement of the sides of transparent cloth. Like the combination of a transparent fabric and a fabric that prevents the passage of light, this system allows the user to have a completely open window, a window covered with a transparent curtain that allows the transmission of light with privacy during the day and a cover that provides privacy during the night or darkening of the room. In addition, it has the control of intermediate light of a lattice product similar to Venetian blinds. Colson's window cover system is difficult to manufacture, has a limited range of fabrics that can be used, and has a very flat appearance when in the way that prevents the passage of light. Another window covering system is described in US Pat. No. 3, 384,519 of Froget. The window cover described therein consists of two fabric layers separated by movable parallel blades each having their marginal edges welded to one of the movable cloth layers. With this relative movement of the window cover of the two layers of fabric in a direction perpendicular to the blades, the angle of the blade changes and thus the amount of light emitted through the article is controlled. Because the blades must be thermally welded to the fabric layers, only thermoplastic materials can be used. Also, thermal welding necessarily requires the fusion of some of the fibers of the bonded material, thereby providing a non-uniform external appearance along the thermal welds and producing undesirable creases or wrinkles in the material, which result in breakages by fatigue. In addition, thermal welding is a relatively slow process and the resulting weld is of limited strength. JUd ins in U.S. Patent No. 5,339,882, discloses a window cover having a series of laths connected between two separate sheets of material. The strips are substantially perpendicular to the sheets of material, when the cover is in an open position. The battens are substantially parallel to the first and second sheets of the material when the window cover is in a closed position. In this way the product has many of the same limitations as the window cover described by Colson. There is a need for a window cover system that provides control of the passage of light from a Venetian blind with the smooth appearance of the windows and pleated shadows. This window cover should be available in a wide variety of fabrics, colors and styles. The system must be easy to install and operate and capable of being manufactured at a cost that allows the product to be sold at a competitive price.

Brief Description of the Invention A window covering that controls the passage of light is provided, which consists of a support sheet and a series of strips connected to the support sheet. The strips are knitted or reticulated or treated to have a first portion that prevents the passage of light or almost prevents the passage of light, in addition to a second portion that allows the passage of light. The outer edge of each of the portions that prevent the passage of light is attached to the support sheet. Then the strip is bent where the inner edges of the two portions meet, so that the outer edge of the second portion is connected to the strip above or below. That outer edge joins the adjacent strip to form a cell. The similar union of adjacent strips forms a honeycomb window cover that controls the passage of light. The support sheet is preferably an open knitted fabric material, through which light passes easily. Accordingly, the movement of the portion of strips which prevents the passage of light from a position perpendicular to the support sheet to a position generally parallel to the support sheet, controls the amount of light that is admitted through the cover to sell it. The strips can be made of a single cloth, half of which is coated or laminated to form the portion that prevents the passage of light. Alternatively, the strips could be woven to create the portion that prevents the passage of light and an adjacent portion that emits light. The strips can be cut from lace or other fabrics having a decorative fabric or knitted pattern. A sculpted edge may be provided on the outer edge of the portion that emits light from each strip, which edge is attached to the adjacent strip. A logo, message or other distinctive representation may be printed or formed on the portion that prevents the passage of light or almost prevents the passage of light. Consequently, the owner could easily create a unique window cover for their windows. The other objects and advantages of the invention will be apparent from the description of certain preferred embodiments of the present shown in the drawings.

Dissection of the Figures Figure 1 is a perspective view of a first preferred embodiment of the present, of the window cover for controlling the passage of light. Figure 2 is a perspective view of a second preferred embodiment of the present, of the window cover for controlling the passage of light. Figure 3 is a perspective view of a third preferred embodiment of the present, of the window covering for controlling the passage of light. Figure 4 is a perspective view of a fourth preferred embodiment of the present, of the window cover for controlling the passage of light.

Figure 5 is a top plan view of a first preferred strip of the present. Figure 6 is a top plan view of a second preferred strip of the present. Figure 7 is a top plan view of a third preferred strip of the present. Figure 8 is a top plan view of a fourth preferred strip of the present. Figure 9 is a top plan view of a fifth preferred strip of the present. Figure 10 is a top plan view of a sixth preferred strip of the present. Figure 11 is a top plan view of a seventh preferred strip of the present. Figure 12 is a side view of a window cover for controlling the passage of light using the strip of Figure 11.

Dissection of the Preferred Modes In Figure 1 there is shown a perspective view of a first preferred embodiment of the present one, of the window cover 1, for controlling the passage of light. This system is comprised of a support sheet 2 and a set of strips 10 attached to the support sheet. The support sheet 2 extends from the upper rail 4 to the lower rail 6. The support sheet is made of an open knitted fabric or open weave, which allows light to pass easily through the fabric. A series of strips having an opaque or almost opaque portion that prevents the passage of light 12 and a translucent or nearly transparent portion that allows the passage of light 14, extends from the support sheet 2. The outer edge of the The portion that prevents the passage of light 12 is glued, sewn or fused to the support sheet along the connecting lines 13. It is preferred to provide a mandrel 20 within the upper rail. The support sheet 2 and the upper front segment 8 are connected opposite to the mandrel 20. The rotation of the mandrel in any direction will move the support sheet 2 in relation to the light emitting portions 14 of the strips forming the front part. of the window cover. In this way, the orientation of the portions that impede the passage of the light 12 moves from a position perpendicular to the support sheet 2, as shown in Figure 1, to a position almost parallel to the support sheet. The portions that impede the passage of light in the embodiment shown in Figure 4 are shown almost parallel to the support sheet. The elevator cords 5 preferably extend from the lower rail 6 to the upper rail 4. A release mechanism (not shown) inside the upper rail raises and lowers the window cover. The release cords can be placed only along the window cover support as shown, along both the front and rear openings, or through the openings (not shown) in the portions that impede the passage of the light. In an alternative configuration, the window cover could be wound on the mandrel to raise the window cover from an open to a closed position. The upper segment of the front portion 8 is made of the same material as the portions of the strips that allow the passage of the light 14. The lower edge of the upper segment 8 is glued, sewn or welded to the adjacent strip along the lengths of the edges. connecting line 15. The connecting line 15 is near and substantially parallel to a line separating the portion that prevents the passage of light 12 from strip 10 of the portion that allows the passage of light 14. The outer edge of the portion that allows the passage of light from each strip is attached to the adjacent strip along line 16. Accordingly, the combination of the support sheet and the strips forms a cellular structure. This arrangement continues to the lower strip which is connected to the lower rail 6. In a second preferred embodiment illustrated in Figure 2, the same support sheet 2 is provided. However, in this embodiment the strips 10 are cut so that the outer edge of the portion allowing the passage of the light 14 has a sculpted edge portion 17. A similar appearance could be created by forming a sculpted pattern along the internal face of the portion that prevents the passage of light 12 and the portion that allows the passage of light 14 of each strip. Although the window cover could be oriented to have either the support sheet 2 or the portions that allow the passage of the light 14 from the strips 10 adjacent to the window, in the embodiment of Figure 2, the window covering could be oriented so that the sculpted pattern will be oriented towards the room to show the decorative border. In the embodiment of Figure 1, the support sheet is shown as an open knit or open weave pattern, having openings smaller than the portions of the strips that allow light to pass through. This is necessary to avoid the moire pattern. In the embodiment shown in Figure 2, the portions that allow light to pass from the strips are shown as having an open mesh fabric. This fabric should be different from the support sheet to avoid the moire effect. In the embodiment of Figure 3, the portions that allow the passage of light 14 from the strips of the window cover support. A sheet of material that allows the passage of light 23, shown as having a decorative lace pattern, forms the front part of the window cover 22. As in the previous embodiments, the outer edge of the portion that allows the passage of light is stuck, sewn or welded to the along the lines of junction 16 to an adjacent strip. The trailing edge of the portion preventing the passage of light 12 from each strip is glued, sewn or welded to the sheet of material that allows the passage of light 23 along the line of attachment 13. The fourth preferred embodiment of the present shown in Figure 4, is configured as a roll shade 28. In this embodiment, the upper part of the sheet supporting the material that allows the passage of the light 2, is attached to a roller 24. upper portion 8 of the front part, is also attached to the roller. A series of strips 10 are connected to the support sheet 2 as in the first and second embodiments. Instead of providing a lower rail, rollers 25 and 26 are provided on the trailing edge of the support sheet 2 and the lower edge of the lower strip 27. The strips used in the window cover of the present can be a variety of ways. In Figure 5, there is provided an elongated piece 30 of material allowing the passage of light from open knit or open knitted fabric, and a second adjacent strip of material preventing the passage of light 32. The material that prevents the Light step, it can be from a tight woven fabric or tight knitted fabric, a non-woven material or film. The elongated pieces 30 and 32 are glued, sewn or welded together along the line 31. Another preferred strip of the present is shown in Figure 6. This strip 34 is woven as a single piece. There is a region that allows the passage of light 35 and that has an open tissue and that prevents the passage of light 36 that has a very tight tissue. In this way, a single woven or knitted strip having adjacent segments of different opacity is formed. Another preferred strip of the present is shown in Figure 7. That strip 38 has an open woven or woven portion 39, to which a portion that prevents the passage of light 40 is glued, sewn or stitched. It prevents the passage of light 40, it can be made of tight or non-woven material or fabric, or a plastic strip or film, or even a strip of metal or wood. Serving 40, preferably has a series of impressions or cuts 41, which give a decorative appearance to the portion that prevents the passage of the light from the strip 38. The strip 44 shown in Figure 8 is made of a single piece woven. This piece has a portion that allows light to pass through open tissue 35 and a portion that prevents light from passing through tight tissue 36. The tight tissue portion is folded back on itself as shown to complete the strip . In the strip shown in Figure 9, a single open fabric sheet 48 is provided. A second strip 49 of material preventing the passage of light is laminated or bonded on the open weave fabric 48. The material preventing the passage of light, it can be made of tight or non-woven fabric material or a plastic strip or film, or even a strip of metal or wood 40. The strip that prevents the passage of light could have a mirror surface. A sixth preferred strip of the present 50 is shown in Figure 10. E = the strip has a portion that allows the passage of the light 51 and a portion that prevents the passage of the light 52 with a sculpted edge 57. A print is printed. logo 50 on the portion that prevents the passage of light. When a window cover having the strip 50 of Figure 10 is in a closed position, the logo will be visible through the support sheet. Some materials, such as films and polyester sheets that can be used on the window cover to control the passage of light, have a stiffness that resists folding or bending. For those materials, it is preferred to provide a marked, perforated or compressed coating on each fold, as shown in Figures 11 and 12. The strip 60 has a portion that allows light to pass 64 and a portion that prevents the passage of light. the light 66. A marked line 61 is provided between the portion that allows the passage of the light 64 and the portion that prevents the passage of the light 66. A second marked line 63 is provided to define the tab sections 65 of the portion which prevents the passage of the light 66, which is attached to the sheet of material 62. The two lines of glue 67 and 69 are placed on the strip 60 to join each strip to the sheet of material, and an adjacent strip to form the cellular structure shown in Figure 12. Because the cells in the window cover of the present are formed by a combination of a sheet and strips it is possible to make the width of the cells very narrow. It is also possible to have different widths for the portions of the strip that allow the passage of light and prevent the passage of light, so that rectangular cells are created. Although the cells could be made of any dimension, it is preferred to provide square cells having sides of approximately 2.54-1.27 cm (1-1 / 2"). It is preferred that the portion of the strips that allow the passage of light is substantially more coarse than the edge of the sheet, this difference will eliminate a defect of the moire and will provide a strip that can be manipulated more easily during the bonding, adhesion and transport of the strip As previously stated, the sheet and the strips can be manufactured However, it is preferred to use polyester material, it is also preferred to stick the strips to the sheet and to glue the adjacent strips using hot melt polyester adhesives, which are sticky at a lower temperature typically around of 104.4 ° C (220 ° F) and melt and flow at higher temperatures, usually around 176.7 ° C (350 ° F). Although the adhesive is sticky, the strips can be easily placed. When placed properly, the temperature can rise to melt the adhesive and cool quickly to complete the bond. Although several preferred embodiments of the present window covering for controlling the passage of light have been shown, it should be understood, in a distinctive manner, that the invention is not limited thereto, but that various embodiments may be made within the scope of the invention. the following claims. It is noted that in relation to this date, the best method known by the applicant to carry out the aforementioned invention, is the conventional one for the manufacture of the objects to which it relates. Having described the invention as above, property is claimed as contained in the following:

Claims (16)

1. CLAIMS 1. A window cover, characterized in that it comprises: a. a sheet of material that allows the passage of light; and b. a plurality of strips, each of which is comprised of i. a portion that prevents the passage of light having an outer edge connected to the sheet of material that allows the passage of light and an inner edge; and ii. a portion that allows the passage of light having an inner edge connected to the inner edge of the portion, which prevents the passage of light and an outer edge connected to one of the plurality of adjacent strips so that the portions that prevent the Light's path 'are attached to the blade along a series of separate, generally parallel, lines of junction.
2. 2. The window cover according to claim 1, characterized in that it also comprises a top rail to which the sheet of material that allows the passage of light is attached.
3. 3. The window cover according to claim 2, characterized in that it also comprises a lower rail to which the sheet of material that allows the passage of light is attached.
4. 4. The window cover according to claim 3, characterized in that it also comprises lifting cords extending between the upper rail and the lower rail.
5. 5. The window cover according to claim 2, characterized in that it also comprises at least one rod attached to one of the sheet of material that allows the passage of light and one of the strips.
6. 6. The window cover according to claim 1, characterized in that the plurality of strips are comprised of an elongated piece of material that allows the passage of light, to which an elongated piece of material that prevents the passage of light is connected. the light.
7. The window cover according to claim 6, characterized in that the elongated part of the material that prevents the passage of light overlaps the elongated piece of material that allows the passage of light.
8. The window cover according to claim 1, characterized in that the portion that allows the passage of light has a mirror finish.
9. 9. The window cover according to claim 1, characterized in that the portion that prevents the passage of light is printed with a logo.
10. 10. The window cover according to claim 1, characterized in that the strips are glued to the sheet that allows the passage of light.
11. The window cover according to claim 10, characterized in that the adhesive is tacky at a first temperature and melts at a second temperature by gluing the strips to the sheet that allows the passage of light.
12. The window cover according to claim 11, characterized in that the adhesive is a polyester adhesive.
13. 13. The window cover according to claim 1, characterized in that the sheet that allows the passage of light is polyester.
14. 14. The window cover according to claim 1, characterized in that the portion that allows the passage of light has a width less than the width of the portion that prevents the passage of light.
15. The window cover according to claim 1, characterized in that the strips are coated with at least one marked coating, a perforated coating and a coating of compressed material.
16. 16. The window cover according to claim 1, characterized in that the strip has at least one decorative edge.