Cellular coverings for roll-up shades
View Patent ↗A cellular covering for a roll-up type shade assembly is described. According to one embodiment, the covering typically comprises a plurality of cells vertically disposed on a backing sheet. Each cell is configured to self-inflate when unrolled from a roller of the shade assembly.
1. A covering for a window, the covering comprising a roller, and a plurality of longitudinally-extending interconnected fabric cells, the cells being vertically spaced from each other and separated by an intervening vertically-extending spacing section, each of said cells and said spacing sections being formed from a strip of material having a first end with the strip extending straight upwardly from the first end to a first fold thereby defining a back wall of the cell between said first end and said first fold, said strip turning downwardly at said first fold to a second fold so as to define a front wall of the cell between said first and second folds, said strip extending rearwardly from said second fold toward and attached to said back wall to define a bottom wall with said front wall being spaced a greater distance from said back wall at said bottom wall than at said first fold, said spacing sections each comprising an extension of said bottom wall, and wherein the cells are adapted to collapse when wound onto the roller and expand when the covering is unwound from the roller.
2. The covering of claim 1 wherein said back wall of each cell is substantially coplanar with said spacing sections.
3. The covering of claim 1 wherein said first fold is a sharp fold.
4. The covering of claim 1 wherein said back walls of the plurality of cells and the spacing sections are comprised of a single sheet of fabric.
5. The covering of claim 1 wherein said bottom wall is concave upwardly.
6. The covering of claim 1 wherein said bottom wall is secured to said first end of said strip of material.
7. The covering of claim 6 wherein said bottom wall extends upwardly at its connection to said first end.
8. The covering of claim 7 wherein said strip of material is folded to extend downwardly toward a second end of said fabric strip above the connection of the bottom wall to said first end.
9. The covering of claim 8 wherein said strip of material between said downward fold and said second end defines a spacing section.