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US 2006/0231214 A1Published application
Top and bottom stacking blind
OwnerWilliam Whyte, James Tyner +1inventors
InventorsWilliam Whyte, James Tyner, David Burnett
Life of this patent
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OwnerWilliam Whyte, James Tyner +1inventors
InventorsWilliam Whyte, James Tyner, David Burnett
Estimating the term…
In a top down, bottom up blind with a fixed headrail as well as an intermediate or moving rail and bottom rail at least one spring is provided in the headrail or in the intermediate rail and is connected to the lift cords that raise and lower the intermediate rail. When the intermediate rail is fully raised to abut the headrail, the spring or springs pulls a portion of each lift cord into the headrail or intermediate rail. Consequently, the spring or springs compensate for the slippage of the lift cords that control the intermediate rail and there is no gap between the headrail and the fully raised intermediate rail.
An improved top down, bottom up blind of the type comprised of an intermediate rail located between a headrail and a bottom rail, window covering material connected between the intermediate rail and the bottom rail, a first set of lift cords connected to the bottom rail and passing into the headrail, and a second set of lift cords connected to the intermediate rail and passing through a cord lock in the headrail wherein the improvement comprises at least one spring connected to the headrail or the intermediate rail and connected to at least one of the lift cords in the second set of lift cords.
Dependencies are inferred from the claim text.