Window blind

Details Window blind Window blind

2005-06-16

2008-09-16

Mitchell, Katherine (Department: 3634)

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Venetian blind type

C160S17300V

Reexamination Certificate

active

07424905

ABSTRACT:
A supplement blind enhancement for a window blind includes a plurality of enhancing blades positioned between every two adjacent slats of the window blind, a control system having a control slider, a blade controller extended from the control slider to slidably shift the control slider between a light shading position and a light enhancing position, and an elongated element extended from the control slider to engage with the enhancing blades. At the light shading position, the control slider is driven to slide the enhancing blades suspendedly disposed between the slats in an alternating manner for substantially blocking sunlight passing through a gap between each two slats, and at the light enhancing position, the control slider is driven to slide that each of the enhancing blades to overlap with the respective slat for allowing the sunlight passing through the gap between each two slats.

REFERENCES:
patent: 5934351 (1999-08-01), Bharucha et al.
patent: 6648048 (2003-11-01), Lai
patent: 6991020 (2006-01-01), Cheng et al.
patent: 7100664 (2006-09-01), Hsu
patent: 7178576 (2007-02-01), Nien et al.

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