One way brake for a cordless blind
AssigneeNewell Window Furnishings, Inc.
InventorsZazu Ciuca, Roger Palmer
Life of this patent
Estimating the term…
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.
Claims48
A sizable 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;
- and
- an interface assembly configured to move the brake between a first position and a second position, the interface assembly including a coupling portion operatively coupled to the brake and a user portion operatively coupled to the coupling portion,
- 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 configured to releasably couple to the first lift cord;
- a user interface configured to move the brake between a first position and a second position;
- a connector operatively coupled to the user interface and the brake;
- and
- a guiding element having a plurality of channels and operatively coupled to the connector,
- 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 and a brake lever operatively coupled to the brake;
- a user interface configured to pivot the brake lever between a first position wherein the brake is in the engaged position and a second position wherein the brake is in the disengaged position;
- a connector operatively coupled to the brake lever and the user interface;
- and
- a guiding assembly configured to receive the connector and the first and second cords, the guiding assembly including a plurality of channels,
- 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;
- at least one lift cord extending between the head rail and the bottom rail;
- a window covering material extending between the head rail and the bottom rail;
- and
- a brake assembly configured to inhibit movement of the bottom rail in a first direction relative to the head rail responsive to a first force acting on the bottom rail and to permit movement of the bottom rail in a second direction, different from the first direction, responsive to a second force acting on the bottom rail.
Dependencies are inferred from the claim text.