Flexible or portable closure – partition – or panel – Pleating type – Lazy-tong links pivot about axes parallel to panel
Patent
1989-04-19
1990-12-04
Purol, David M.
Flexible or portable closure, partition, or panel
Pleating type
Lazy-tong links pivot about axes parallel to panel
A47H 500
Patent
active
049746561
ABSTRACT:
This invention relates to a pleated shade, and a method for the manufacture thereof. The shade has the two sections forming each rear projecting pleat secured together to form a rear projecting tab. Cord holes are formed in each of the tabs. The rigidity of the pleats may be substantially enhanced by providing double-weld joints for the tabs or by otherwise providing a multiple or continuous bond between the two fabric layers forming the tab. A joint used to form a tab may also be used as a splice joint to secure together two pieces of material either for repair of a defective or damaged material, to achieve a desired aesthetic effect or to customize the length or width of the shade. Pleat reversal problems may be overcome by carefully selecting the relative size of the tab and shade sections, by controlling the size and tab positions of cord holes, by treating the nose pleat to improve its memory, and by other suitable methods. A second piece of material may be positioned behind the first. The second piece of material may have tabs formed in the same manner as the first piece, the pieces of material being hung with the tabs facing each other, and the tabs may be maintained at a predetermined relative position. If the second piece of material is shorter than the first and tabs are simultaneously formed on the two pieces, a prismatic configuration may be achieved.
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Ingersoll Buchanan
Purol David M.
Verosol USA Inc.
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