A master/slave shaft arrangement includes: a motor having an output shaft; a master drive barrel, the first end of which being rotationally driven by the output shaft of the motor, the master drive barrel having, at a second end thereof, a master drive sprocket; a synchronizing shaft that is rotationally driven at its second end by a first coupling assembly, the rotational driving of the synchronizing shaft being synchronous with the rotational driving of the master drive barrel by the motor; and a slave barrel, the slave barrel being rotationally driven at its first end by a second coupling assembly that rotationally couples the synchronizing shaft with the slave barrel to rotationally drive the slave barrel, the rotational driving of the slave barrel being synchronous with the rotational driving of the synchronizing shaft and the rotational driving of the master drive barrel by the motor.

An architectural covering is presented having a rotatable drive element having a guide structure and a plurality of idler attachment elements and a drive element positioned over the rotatable drive element. The rotatable drive element is connected to a wall, ceiling or other structure by brackets. In one arrangement a drive shaft having at least one bearing is then attached to the brackets such that the rotatable drive elements rotate upon the bearings. This arrangement provides an efficient, simple and convenient manner of attaching a rotatable drive element to brackets for mounting.

An architectural covering is presented having a rotatable drive element having a guide structure and a plurality of idler attachment elements and a drive element positioned over the rotatable drive element. The rotatable drive element is connected to a wall, ceiling or other structure by brackets. In one arrangement a drive shaft having at least one bearing is then attached to the brackets such that the rotatable drive elements rotate upon the bearings. This arrangement provides an efficient, simple and convenient manner of attaching a rotatable drive element to brackets for mounting.

A window curtain driving assembly is revealed. A pulley driving assembly is pivotally connected to a main body. Pulleys disposed on the pulley driving assembly slid in a curtain track. Thereby the window curtain driving assembly rotates along curves of the window track so that it can also be applied to the curved window track. An auxiliary pulley set is mounted and fixed on a top of the main body. The pulley mount is oriented toward a given direction by the second latch bar on one side of the pulley driving assembly being mounted in the auxiliary pulley set. Thus the window curtain driving assembly can also be applied to a straight curtain track for extension or retraction of a curtain.

A load control system may include control devices for controlling electrical loads. The control devices may include load control devices, such as a lighting device for controlling an amount of power provided to a lighting load, and input devices, such as a remote control device configured to transmit digital messages comprising lighting control instructions for controlling the lighting load via the lighting device. The remote control device may communicate with the lighting device via an intermediary device, such as a hub device. The remote control device may detect a user interface event, such as a button press or a rotation of the remote control device. The remote control device or the hub device may determine whether to transmit digital messages to as unicast messages or multicast messages based on the type of user interface event detected.

A safety device for a curtain controller is provided. The safety device comprises a base, a bead chain wheel, and a cover. A shaft sleeve having a conical shape is disposed in a through hole of the base to connect a shaft's terminal and thus be fixed in a sleeving hole, having a shape to fit the shaft sleeve, of the bead chain wheel, so that the motions of the shaft sleeve and the bead chain wheel are linked. A bead chain is wound on the bead chain wheel. When the bead chain is pulled down, the shaft sleeve can drive the rotation of the bead chain wheel. The upper part of the cover is pivotally connected to the base, and the lower part of the cover buckles the base. Therefore, when the bead chain is instantly pulled down, the cover can be opened to drop the bead chain wheel.

A safety device for a curtain controller is provided. The safety device comprises a base, a bead chain wheel, and a cover. A shaft sleeve having a conical shape is disposed in a through hole of the base to connect a shaft's terminal and thus be fixed in a sleeving hole, having a shape to fit the shaft sleeve, of the bead chain wheel, so that the motions of the shaft sleeve and the bead chain wheel are linked. A bead chain is wound on the bead chain wheel. When the bead chain is pulled down, the shaft sleeve can drive the rotation of the bead chain wheel. The upper part of the cover is pivotally connected to the base, and the lower part of the cover buckles the base. Therefore, when the bead chain is instantly pulled down, the cover can be opened to drop the bead chain wheel.

A curtain cord winding device includes a base, a cord winding mechanism rotatably mounted to the base, and a drive mechanism. The cord winding mechanism includes a main reel fitted about a drive shaft of the drive mechanism, and a secondary reel. The main reel includes a first winding segment for winding a cord, and a screw segment screwed to a screw hole of the base. The main reel and the secondary reel are coaxially arranged and fixed in turn. The secondary reel includes a second winding segment, and a first connecting member. An end of the first winding segment away from the screw segment and an end of the second winding segment away from the first connecting member each is provided with a second connecting member. The first connecting member is fixed to the second connecting member in an axial direction.

A method of operating a motorized window covering is presented wherein in response to a standard movement command power is supplied to a motor in a continuous or generally continuous manner thereby moving the shade material from a start position to an end position in a generally continuous manner. However, in doing so, the motor rotates at a fast rate thereby causing elevated noise levels. In response to an automated movement command, power is supplied to the motor by cycling power to the motor between a powered state and an unpowered state thereby moving the shade material from a start position to an end position in an incremental manner. While moving the shade material in this incremental manner is slower, it is substantially quieter. The preferred mode of operation is selected based on whether the movement command is a standard movement command or an automated movement command.

A method of operating a motorized window covering is presented wherein in response to a standard movement command power is supplied to a motor in a continuous or generally continuous manner thereby moving the shade material from a start position to an end position in a generally continuous manner. However, in doing so, the motor rotates at a fast rate thereby causing elevated noise levels. In response to an automated movement command, power is supplied to the motor by cycling power to the motor between a powered state and an unpowered state thereby moving the shade material from a start position to an end position in an incremental manner. While moving the shade material in this incremental manner is slower, it is substantially quieter. The preferred mode of operation is selected based on whether the movement command is a standard movement command or an automated movement command.