Flexible or portable closure – partition – or panel – Plural and/or with rigid closure – Roll type
Reexamination Certificate
2007-09-11
2007-09-11
Purol, David M. (Department: 3634)
Flexible or portable closure, partition, or panel
Plural and/or with rigid closure
Roll type
C160S323100
Reexamination Certificate
active
11049172
ABSTRACT:
The present invention relates to a blind of a roll type comprising a blind sheet having alternate transparent and opaque parts and partly overlapped by folding, to easily and efficiently adjust room illumination. The blind comprises a upper-end support bar; a pair of brackets provided at both ends of the upper-end support bar, standing opposite to each other; a winding rod of which both ends are rotatably fitted into the respective brackets; an adjusting cord provided between one bracket and the winding rod to rotate the winding rod through a sprocket member; a blind sheet comprising alternate transparent and opaque parts and folded to have one end secured to the winding rod and the other end secured to the upper-end support bar; and a weight body provided at a lower end of the blind sheet to stretch the blind sheet tight.
REFERENCES:
patent: 2280358 (1942-04-01), Tietig
patent: 3854517 (1974-12-01), Nakamura
patent: 5566736 (1996-10-01), Crider et al.
patent: 6189592 (2001-02-01), Domel
patent: 6540004 (2003-04-01), Wu
patent: 6666251 (2003-12-01), Ikle
patent: 6935401 (2005-08-01), Fraczek et al.
Bradford Candace L.
Madson & Austin
Purol David M.
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