Cordless blind
OwnerRen Judkinsinventor
Life of this patent
Estimating the term…
Abstract
A cordless blind contains one or more springs in the bottomrail of the blind. Preferably the spring is a constant force spring motor and is connected to at least one cord collector in a manner to maintain tension on the cord collector. The tension causes the lift cords to be collected on the cord collector when the cord collector and the lift cords are free to move, thereby moving the bottomrail toward the headrail. Preferably, a lock mechanism is attached to the cord collector or the lift cords. The lock mechanism has a locked position wherein the lift cords are restrained from being collected on the cord collector and has an unlocked position that allows the lift cords and cord collector to move.
Claims20
A cordless blind comprising:
- a. a headrail;
- b. a bottomrail;
- c. a window covering material connected between the headrail and the bottomrail;
- d. a plurality of lift cords each attached to the headrail and passing into the bottomrail;
- e. at least one cord collector within the bottomrail about which at least one of the lift cords is wound;
- f. a spring connected to the cord collector in a manner to maintain tension on the at least one cord collector such tension causing the plurality of lift cords to be collected on the at least one cord collector when the at least one cord collector and plurality of lift cords are free to move, thereby moving the bottomrail toward the headrail;
- and
- g. a lock mechanism attached to at least one of the cord collector and the plurality of lift cords, the lock mechanism having a locked position wherein the plurality of lift cords are restrained from being collected on the cord collector and an unlocked position that allows the cord collector and plurality of lift cords to move freely, the lock mechanism being biased toward a locked position.
A cordless blind comprising:
- a. a headrail;
- b. a bottomrail,
- c. a window covering material connected between the headrail and the bottomrail;
- d. a plurality of lift cords each attached to the headrail and passing into the bottomrail;
- e. at least one cord collector within the bottomrail about which at least one of the lift cords is wound;
- and
- f. a spring within the bottomrail and connected to the cord collector.
Dependencies are inferred from the claim text.