A winder for a blind system, comprising a drive member rotatable in a drive direction and a free direction; a driven member to engage a blind cylinder; a transmission mechanism to selectively transmit rotation of the drive member to the driven member, the transmission mechanism including an intermediate transmission member and an intermediate resistor to provide resistance to rotation of the intermediate transmission member, wherein the transmission mechanism has a drive state when the drive member is rotated in the drive direction to overcome the resistance of the intermediate resistor and transmit rotation of the drive member through the intermediate transmission member to the driven member, and a free state when the drive member is rotated in the free direction, wherein transmission is broken between the drive member and the intermediate transmission member and intermediate resistor.

A curtain may include a blind shade stretched or contracted in a first direction to adjust transmittance of light, a base coupled to one end portion of the blind shade in the first direction thereof, and a transmittance adjusting device to adjust the transmittance of the light passing through the blind shade by pulling outward or releasing inward an other end portion of the blind shade in the first direction thereof, in the state that spacing from the base in the first direction is fixed.

A motorized shade assembly is provided having a discontinuous web extending between two rollers, one of which is motorized and the other is tensioned or biased toward rotation away from the other roller. The roller motor can be mounted inside of one of the rollers, and the tensioning device, such as a torsion spring, can be mounted inside of the other roller. The web includes a shade portion and a strap portion, with a rigid draw bar at the junction of those portions. Rotation of the rollers causes the strap portion to wrap over one of the rollers as the shade portion unwraps from the other roller. The shade assembly can be positioned between an inclined or curved vehicle window and an interior shroud for the window, such as found with a cab-over window of a Class B motorhome. The draw bar and fasteners connecting the strap to the draw bar facilitate movement of the shade when in contact with the shroud. Friction reducing tape or surface treatment on the periphery of the window opening in the shroud can also facilitate movement of the shade when in contact with the shroud. Motor actuation can be hardwired to a desired location within the vehicle, or wirelessly controlled by the user, as with an RF device.

A covering for an architectural covering is provided. The covering may include a rotatable outer tube, a rotatable inner tube, a shade attached to the outer tube, and an operating element secured to the inner tube. The outer tube may define an elongated slot extending along a length of the outer tube and opening to an interior of the outer tube. The inner tube may be received within the outer tube. The shade may be retractable to and extendable from the outer tube. The operating element may extend through the elongated slot and may be retractable onto and extendable from the inner tube. The inner tube may rotate relative the outer tube to open and close the shade once the support sheet is in a fully extended position.

In one aspect, a roller shade assembly for an architectural opening may generally include a first roller, a second roller and a looped shade extending around the first and second rollers. The looped shade may include at least one outer shade web forming a continuous loop around the rollers. In addition, the roller shade assembly may include an inner shade web configured to be wrapped around the first roller or the second roller such that the inner shade web is positioned within the continuous loop. The inner shade web may be coupled to the outer shade web(s) at a location along an inner perimeter of the continuous loop. Additionally, rotation of the first roller and/or the second roller in an unwinding direction may result in the inner shade web being unwound from the first roller or the second roller along the inner perimeter of the continuous loop.

An alignment bracket for a roller blind, comprising a base and a roller tube support securable to the base. First and second coupling members on the base and roller tube support permit an adjustment of the alignment of the roller tube support, and the end of a roller tube mounted thereon, relative to the base. Also provided is a blind fabric alignment device for a roller tube of a multi-tube roller blind. The alignment device comprises a drive coupling body securable to an end of a roller tube of the blind, a driven member mounted to the drive coupling body, a torque transfer mechanism secured to the driven member, and an adjuster. The torque transfer mechanism transfers rotational torque from the driven member to the drive coupling body through the adjuster. The adjuster permits an alteration of the rotational position of the driven member relative to the drive coupling body.

A multi-curtain assembly includes: first and second curtain segments, each having a leading edge and side edge; an edge fastener having first and second fastener portions proximate the side edge of the first and second curtain segments, respectively, the first fastener portion of the first curtain segment being connectable to the second fastener portion of the second curtain segment to produce a seam as the curtain segments are moved to their closed positions; a motor driving one or more of the barrel assemblies; a synchronizing mechanism synchronizing the barrel assemblies. An overlap fastener, arranged proximate edges of the curtain segments in an overlap region, has aligning portions that align as the side edges are brought into alignment by the edge fastener, to mask at least one side of the fastener seam as the fastener portions are connected to each other.

An alignment bracket for a roller blind, comprising a base and a roller tube support securable to the base. First and second coupling members on the base and roller tube support permit an adjustment of the alignment of the roller tube support, and the end of a roller tube mounted thereon, relative to the base. Also provided is a blind fabric alignment device for a roller tube of a multi-tube roller blind. The alignment device comprises a drive coupling body securable to an end of a roller tube of the blind, a driven member mounted to the drive coupling body, a torque transfer mechanism secured to the driven member, and an adjuster. The torque transfer mechanism transfers rotational torque from the driven member to the drive coupling body through the adjuster. The adjuster permits an alteration of the rotational position of the driven member relative to the drive coupling body.

A transmission device of a window shade includes a top box, a bottom bar and a shade located between the top box and the bottom bar. A first scrolling member and a second scrolling member are respectively connected to the first and second rails in the top box, and a movable unit is movably engaged with the first rail and between the first and second scrolling members. A transmission cord wraps around the first and second roller units of the movable unit, and the transmission cord wraps around the first and second roller units of the first scrolling member. Two ends of the transmission cord extend through the top box, the shade and are connected to the bottom bar. The length of the transmission cord can be stored between the first and second rollers so as to be cooperated with a longer shade.

The invention is directed to a vertical sliding window as a closure for an opening in an exterior wall of a building, wherein for opening, at least one window pane of the sliding window may be lowered downwardly, in particular into a flat chamber within a box. The sliding window may be provided as a finished module, with the option of integrating insulation and/or designing the facade; it is also possible to integrate a roller shutter box, in particular also in heat-insulated form. The area of application for such a sliding window component ranges from single-family dwellings to high-rise buildings of any conceivable height.