Brake for a cordless blind
AssigneeNewell Window Furnishings, Inc.
InventorsRoger C. Palmer, Zazu Ciuca
Life of this patent
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Abstract
A window covering including a head rail, a bottom rail, a window covering material extending between the head rail and bottom rail, a first and second lift cords extending between the head rail and the bottom rail, a spring motor configured to bias the bottom rail toward the head rail, mounted in the bottom rail, and operatively coupled to the first and second lift cords, and a brake mounted in the bottom rail and configured to releasably couple to the first lift cord to prohibit the spring motor from taking up the first cord, prohibiting the bottom rail from being raised or lowered.
Claims29
A window covering comprising:
- a head rail;
- a bottom rail;
- a window covering material extending between the head rail and bottom rail;
- a first and second lift cords extending between the head rail and the bottom rail;
- a biasing element configured to bias the bottom rail toward the head rail, and operatively coupled to the first and second lift cords;
- a brake configured to releasably couple to the first lift cord, wherein the biasing element is configured to raise the bottom rail absent engagement of the brake with the first lift cord.
A window covering comprising:
- a head rail;
- a bottom rail;
- a window covering material extending between the head rail and bottom rail;
- a first and second lift cords extending between the head rail and the bottom rail;
- a biasing element configured to bias the bottom rail toward the head rail, and operatively coupled to the first and second lift cords;
- a brake including a one-way tensioning mechanism and a user interface, the one-way tensioning mechanism being configured to provide a resistant force on movement of the first lift cord, and the user interface being configured to move the one-way tensioning mechanism between a stopped condition and a freewheeling condition;
- wherein the biasing element is configured to raise the bottom rail absent engagement of the brake with the first lift cord.
A window covering comprising:
- a head rail;
- a bottom rail;
- a window covering material extending between the head rail and bottom rail;
- first and second lift cords extending between the head rail and the bottom rail;
- a biasing element configured to bias the bottom rail toward the head rail, and operatively coupled to the first and second lift cords;
- a brake assembly configured to inhibit movement of the bottom rail, the brake assembly including:
- a brake releasably coupled to the biasing element;
- a brake lever pivotally coupled to the bottom rail;
- and
- a user interface operatively coupled to the brake lever and configured to pivot it between a first position wherein the brake is in an engaged position and a second position wherein the brake is in a disengaged position.
Dependencies are inferred from the claim text.