Venetian blind

Details Venetian blind Venetian blind

2011-08-23

2011-08-23

Johnson, Blair M (Department: 3634)

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Venetian blind type

C160S17300V, C160S17610R, C160S17700R

Reexamination Certificate

active

08002012

ABSTRACT:
A Venetian blind includes an upper rail, a lower rail, a slat assembly, an automatic retraction means and a slat opened/closed control means equipped with an adjustment member. The automatic retraction means is installed on one side of the upper rail which has a first cord wheel set and a second cord wheel set near two sides to direct a first lift cord and a second lift cord. The automatic retraction means has a retaining set to pivotally couple a transmission set inside that has a first transmission wheel and a second transmission wheel. The first transmission wheel and second transmission wheel are linked by an elastic element which provides an elastic force to drive the transmission set. The second transmission wheel controls the slat opened/closed control means. When the lower rail is pulled downwards or pushed upwards, the slat assembly can be opened or closed at different angles.

REFERENCES:
patent: 5293921 (1994-03-01), Marocco
patent: 6089303 (2000-07-01), Metcalf et al.
patent: 6293330 (2001-09-01), Ciuca
patent: 6298897 (2001-10-01), Metcalf et al.
patent: 7281563 (2007-10-01), Wu
patent: 7802608 (2010-09-01), Anderson et al.

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