A covering for an architectural opening is provided. The covering may include a roller rotatable about a longitudinal axis, a shade associated with the roller, and an operating system operably associated with the roller. The operating system may include a base, a drive mechanism, a transmission, an actuator arm, and an engagement arm. The drive mechanism may be associated with the base to provide an input torque. The transmission may be associated with the drive mechanism to selectively transmit the input torque to the roller. The actuator arm may be associated with the base to indirectly set a rotation direction of the roller. The engagement arm may be associated with the base and engageable with the transmission.

A manual drive assembly for a manually-operated window treatment based on a drive chain formed as a loop, may incorporate one or more intermediate tensioners disposed between two ends of the loop. The loop may be formed between a manual clutch mechanism coupled to the window treatment and an end tensioner. The one or more intermediate tensioners may serve to limit slack in the loop such that sides of the loop cannot be pulled to create a large loop, for example, having a gap of four inches or greater, between the hanging sides of the cord.

A manual drive assembly for a manually-operated window treatment based on a drive chain formed as a loop, may incorporate one or more intermediate tensioners disposed between two ends of the loop. The loop may be formed between a manual clutch mechanism coupled to the window treatment and an end tensioner. The one or more intermediate tensioners may serve to limit slack in the loop such that sides of the loop cannot be pulled to create a large loop, for example, having a gap of four inches or greater, between the hanging sides of the cord.

A clutch assembly for a roller door operator, the clutch assembly providing selective engagement with a drive wheel, the clutch assembly comprising: a rotatable shaft rotatable relative to the drive wheel; a clutch disc supported in a clutch lever and arranged to rotate with the rotatable shaft, the clutch disc and clutch lever configured to rotate relative to one another around the axis of rotation of the shaft; and a clutch cam supported in a clutch base, the clutch base configured to permit operative rotation of the clutch cam around the axis of rotation of the shaft in a first direction; wherein the clutch lever is operatively associated with the clutch cam so that rotational movement of the clutch lever in a second direction opposite to the first direction actuates movement of the clutch disc and the clutch lever axially along the rotatable shaft to engage or disengage the clutch disc with the drive wheel, and subsequent rotational movement of the clutch lever in the first direction actuates rotational movement of the clutch cam relative to the clutch base in the first direction.

A system for a closure lock comprises a battery-powered remote module with a lock mechanism for operating the lock, the remote module communicating with a base station coupled to a closure controller, the base station able to send lock control signals to the remote module to operate the lock. The module is arranged to have an operation mode and a non-operation mode, power consumption in the non-operation mode being lower than that in the operation mode, and is further configured to switch between the modes based on instructions from the base station. In the non-operation mode, the module maintains a communication link with the base station based on a pre-established synchronisation protocol.

The invention provides reliability against interference between base station and remote module, whilst greatly limiting the power consumption of the remote module.

A system for a closure lock comprises a battery-powered remote module with a lock mechanism for operating the lock, the remote module communicating with a base station coupled to a closure controller, the base station able to send lock control signals to the remote module to operate the lock. The module is arranged to have an operation mode and a non-operation mode, power consumption in the non-operation mode being lower than that in the operation mode, and is further configured to switch between the modes based on instructions from the base station. In the non-operation mode, the module maintains a communication link with the base station based on a pre-established synchronisation protocol.

The invention provides reliability against interference between base station and remote module, whilst greatly limiting the power consumption of the remote module.

A cordless blind device that can be operated in various types such as manual, semiautomatic, and automatic types is proposed. The cordless blind device includes: a winding roll, a screen, a driving motor, a weight connected to a lower end of the screen; a torsion spring applying torque in a direction in which the screen is wound; and a rotation conversion module transmitting power in two directions between the driving motor and the winding roll, in which when the driving motor does not generate driving force, the torque applied by the torsion spring, the torque applied by the weight, and resistance by the rotation conversion module and the driving motor make equilibrium, so the screen remains stopped, and when an external force is applied upward or downward to the weight, the equilibrium of the forces breaks, so the screen is wound on or unwound from the winding roll.

The present invention relates to the sunshade driving device comprising that: a returning function of a manual driving module (410) is actuated by a ball chain or a rotating string; a rotating shaft (491) is attachable/detachable to the power drive unit or the rotating shaft stopping unit separated from a manual driving module; at least one pick-up member (452, 453) to directly drive the sunshade rotating shaft or driving the rotating shaft (491) by the manual drive module (410); a wheel driving member (417) having a manual pulley (417a) or a manual driving wheel (412b) being fitted the ball chain or rotating string; wherein the wheel drive member (417) will be engaged to the manual rotating wheel (412b) and the manual pulley (417a) for rotating together in one direction, and the wheel driving member (417) will disengaged the manual rotating wheel (412b) and the manual pulley (417a) for independently rotating each other in opposite direction activated by a bi-directional driving clutch (417b).

The present invention relates to the sunshade driving device comprising that: a returning function of a manual driving module (410) is actuated by a ball chain or a rotating string; a rotating shaft (491) is attachable/detachable to the power drive unit or the rotating shaft stopping unit separated from a manual driving module; at least one pick-up member (452, 453) to directly drive the sunshade rotating shaft or driving the rotating shaft (491) by the manual drive module (410); a wheel driving member (417) having a manual pulley (417a) or a manual driving wheel (412b) being fitted the ball chain or rotating string; wherein the wheel drive member (417) will be engaged to the manual rotating wheel (412b) and the manual pulley (417a) for rotating together in one direction, and the wheel driving member (417) will disengaged the manual rotating wheel (412b) and the manual pulley (417a) for independently rotating each other in opposite direction activated by a bi-directional driving clutch (417b).

A blind control for a window covering having a narrow profile; and particularly relates to a control module for a window shade where the location of the drive mechanism is selected to minimize the gap between the end of the window shade and inside edge of a window opening; locating the drive mechanism in a shell disposed in a housing to rigidify a reduced thickness of the drive so as to minimize the gap; and use a single rod depending from the control module to activate the drive mechanism in a safe and secure manner. The invention also includes a housing with an end wall adjacent one end of the shade; a clutch projecting from said end wall and rotatable about a clutch axis, a drive gear engageable at one end of the clutch for rotatably driving said clutch and shade, said drive gear disposed in said housing adjacent said end wall; and a wand for driving said drive gear. The invention provides for a wand to raise and lower the window shade.