Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Venetian blind type
Reexamination Certificate
2007-01-30
2007-01-30
Purol, David (Department: 3634)
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
Venetian blind type
Reexamination Certificate
active
10951634
ABSTRACT:
A cordless activating device for a venetian blind has a central reeling device, two string-guides and a main string. The central reeling device has a U-shaped mounting bracket, a resilient coiling device and a clutch. The resilient coiling device comprises a spring spool, a take-up reel and a specifically designed S-shaped recoiling spring. The clutch selectively locks the resilient coiling device in place and activates the resilient coiling device. The string-guides are mounted on opposite ends of the central reeling device. The main string is attached to and controlled by the central reeling device, is wound around the two string-guides and the resilient coiling device and is connected to two draw strings that extend down through the venetian blind. When the clutch activates the resilient coiling device, the resilient coiling device winds the main string onto the take-up reel, and the venetian blind automatically rises.
REFERENCES:
patent: 6024154 (2000-02-01), Wang et al.
patent: 6283192 (2001-09-01), Toti
patent: 6330899 (2001-12-01), Ciuca et al.
patent: 6761203 (2004-07-01), Huang
patent: 6823925 (2004-11-01), Militello et al.
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