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US 11,988,037 B2Granted
Window blind lifting and tilting system
OwnerTser Wen Chouinventor
Life of this patent
Estimating the term…
Abstract
An apparatus for controlling tilting and lifting operation of a window blind is provided. The apparatus includes a tilting control shaft and a lifting control shaft. A ladder belt is fastened to the tilting control shaft and interconnects the slats of the window blind, such that rotating the tilting control shaft tilts the slats. Multiple lifting cords are fastened to the lifting control shaft and connected to the blind bottom of the window blind, such that rotating the lifting control shaft lifts or lowers the blind bottom and one or more slats.
Claims18
An apparatus comprising:
- a plurality of slats of a window blind;
- a blind bottom that is positioned below the plurality of slats;
- a tilting control shaft;
- a lifting control shaft;
- a reeling drum sleeving the lifting control shaft, said reeling drum is slidable along the lifting control shaft during rotation of the lifting control shaft;
- a ladder belt that is fastened to the tilting control shaft and interconnects the plurality of slats, wherein rotating the tilting control shaft tilts the plurality of slats;
- and
- a pair of lifting cords comprising a front lifting cord and a rear lifting cord, each cord having a first end fastened to the reeling drum and a second end connected to the blind bottom,
- wherein the front lifting cord is positioned beyond front edges of the plurality of slats and the rear lifting cord is positioned beyond rear edges of the plurality of slats,
- wherein rotating the lifting control shaft drives the reeling drum to wind or unwind the front and rear lifting cords to lift or lower the blind bottom and one or more slats in the plurality of slats.
7 more elements
An apparatus comprising:
- a plurality of slats of a window blind;
- a blind bottom that is positioned below the plurality of slats;
- a tilting control shaft;
- a lifting control shaft;
- one or more reeling drums sleeving the lifting control shaft, said reeling drums are slidable along the lifting control shaft during rotation of the lifting control shaft;
- a ladder belt that is fastened to the tilting control shaft and interconnects the plurality of slats, wherein rotating the tilting control shaft tilts the plurality of slats;
- and
- a pair of lifting cords comprising a front lifting cord and a rear lifting cord, each cord having a first end fastened to a same reeling drum of the one or more reeling drums and a second end connected to the blind bottom,
- wherein the front lifting cord is positioned beyond front edges of the plurality of slats and the rear lifting cord is positioned beyond rear edges of the plurality of slats,
- wherein rotating the lifting control shaft drives the reeling drum to wind or unwind the front and rear lifting cords to lift or lower the blind bottom and one or more slats in the plurality of slats.
7 more elements
Dependencies are inferred from the claim text.