Tubular cell window covering with undulations along the length o

Details Tubular cell window covering with undulations along the length o Tubular cell window covering with undulations along the length o

1993-07-09

1995-02-21

Purol, David M.

Flexible or portable closure, partition, or panel

Pleating type

Lazy-tong links pivot about axes parallel to panel

E06B 394

Patent

active

053907205

ABSTRACT:
An expandable and contractible tubular cell window covering includes a plurality of contiguous cells which have been bonded together to form a wavy or undulating pattern along the length of the cells. The undulating or wavy patterns can be created by initially stretching the cells before bonding adjacent cells and subsequently releasing the stretch so that the fibers engaged with the bonding medium remain in a stretched or separated condition while the remaining fibers are relaxed. The cells can also be bonded with an adhesive that expands on curing to create the same effect without having to prestretch the fabric before applying the bonding medium. In a third embodiment of the invention, adjacent tubular cells are bonded together with curved lines of adhesive which again create an undulating or wavy configuration along the length of each tubular cell. The methods for forming the window covering is also disclosed.

REFERENCES:
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patent: 4450027 (1984-05-01), Colson
patent: 4631217 (1986-12-01), Anderson
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patent: 4846243 (1989-07-01), Schneider
patent: 5043039 (1991-08-01), Swiszcz
patent: 5097884 (1992-03-01), Sevcik et al.
patent: 5193601 (1993-03-01), Corey et al.
patent: 5205333 (1993-04-01), Judkins

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