Venetian blind having dual-drive mechanism
OwnerMing Nien, Song-He Liu +1inventors
InventorsMing Nien, Song-He Liu, Yu-Che Wen
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Abstract
A window blind includes a transmission mechanism for lifting and lowering and/or tilting the slats of a Venetian blind. The mechanism includes a manually operated or motorized driving unit, and at least one cord roll-up unit. In the manually operated configuration, a single independent operating device is connectable to one or more driving force inputs of the mechanism. Also disclosed is a method for controlling a blind.
Claims22
A Venetian blind comprising a headrail, a bottom rail, a set of slats supported between the headrail and the bottom rail, and a blind control system, the control system comprising:
- (a) a spacing adjustment set comprising a support, a spacing cord connected to the bottom rail and adapted to decrease or increase a spacing between pairs of the slats, and a spacing adjustment wheel rotatably engaged to the support to roll up or let off the spacing cord;
- (b) an angle adjustment set comprising an angle cord adapted to tilt the slats, an angle adjustment member rotatably supported relative to the support and adapted to roll up or let off the angle cord;
- and
- (c) a drive mechanism for selectively driving the spacing adjustment wheel and the angle adjustment member to adjust both the spacing of the spacing adjustment set or the tilt of the angle adjustment set.
Dependencies are inferred from the claim text.