Abstract: In one aspect, a covering for an architectural structure includes a headrail, a bottom rail, and first and second lift straps extending between the headrail and the bottom rail. The covering also includes first and second lift spools rotatable to spool up the first and second lift straps, respectively, as the bottom rail is being moved relative to the headrail. The first lift strap winds on top of itself as the first lift strap is spooled onto the first lift spool, and the second lift strap winds on top of itself as the second lift strap is spooled onto the second lift spool. In addition, the covering includes a leveling shim provided in association with the first lift strap to provide a localized increase in an effective thickness of the first lift strap.

Abstract: In one aspect, a covering for an architectural structure includes a headrail, a bottom rail, and first and second lift straps extending between the headrail and the bottom rail. The covering also includes first and second lift spools rotatable to spool up the first and second lift straps, respectively, as the bottom rail is being moved relative to the headrail. The first lift strap winds on top of itself as the first lift strap is spooled onto the first lift spool, and the second lift strap winds on top of itself as the second lift strap is spooled onto the second lift spool. In addition, the covering includes a leveling shim provided in association with the first lift strap to provide a localized increase in an effective thickness of the first lift strap.

Abstract: A window covering includes a head rail that supports a panel by lift cords such that one end of the panel may be raised and lowered relative to the head rail. An operating system controls movement of the panel and includes spools coupled to the lift cords such that rotation of the spools retracts and extends the lift cords. A shaft is connected to a spool of the lift spool assembly and to a brake and a spring motor. The spring motor applies a motor force to the shaft and the brake applies a brake force to the shaft such that the forces generated by the spring motor and brake hold the panel in the desired position.

Abstract: A window covering includes a head rail that supports a panel by lift cords such that one end of the panel may be raised and lowered relative to the head rail. An operating system controls movement of the panel and includes spools coupled to the lift cords such that rotation of the spools retracts and extends the lift cords. A shaft is connected to a spool of the lift spool assembly and to a brake and a spring motor. The spring motor applies a motor force to the shaft and the brake applies a brake force to the shaft such that the forces generated by the spring motor and brake hold the panel in the desired position.

Abstract: A window covering includes a head rail that supports a panel by lift cords such that one end of the panel may be raised and lowered relative to the head rail. An operating system controls movement of the panel and includes spools coupled to the lift cords such that rotation of the spools retracts and extends the lift cords. A shaft is connected to a spool of the lift spool assembly and to a brake and a spring motor. The spring motor applies a motor force to the shaft and the brake applies a brake force to the shaft such that the forces generated by the spring motor and brake hold the panel in the desired position.