Blinds for adjusting illumination made of thick material

Details Blinds for adjusting illumination made of thick material Blinds for adjusting illumination made of thick material

2006-08-24

2010-10-05

Purol, David (Department: 3634)

Flexible or portable closure, partition, or panel

Plural run type

C160S011000, C160S120000

Reexamination Certificate

active

07806160

ABSTRACT:
The present invention relates to a roll type blind mounted in a window for preventing light from being introduced from the outside or leaking from the inside of a room. In the blind for adjusting height and brightness made of a thick blind material according to the present invention, an inner blind material and an outer blind material of the thick blind material hang down in a tensed state by a pre-weight element and they always keep an equal width therebetween.

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patent: 5437322 (1995-08-01), Murray
patent: 6189592 (2001-02-01), Domel
patent: 2005/0178509 (2005-08-01), Byeon
patent: 2006/0021713 (2006-02-01), Hsu
patent: 2006/0021715 (2006-02-01), Nien
patent: 2007/0084568 (2007-04-01), Nien

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