Abstract: 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.

Abstract: 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.

Abstract: Embodiments of the invention relate to a stop configured to be positioned in a track channel of a guide rail for guiding a shade. Further embodiments relate to a guide rail and stop combination, where the guide rail and stop combination are configured to be used for guiding a shade. Still further embodiments relate to a shade system incorporating one or more guide rails for guiding a shade and at least one stop positioned with respect to the guide rail to control the travel of bottom bar interconnected with the shade.

Abstract: A curtain assembly comprises a rotatable drive element wherein at least one helical guide structure is formed on, or into, the outer surface of the drive element. A drive attachment element having a structure that communicates with the helical guide structure to move the drive attachment element axially along the drive element when the drive element is rotated. Specific embodiments incorporate either a manual or motor-driven rotation assembly for rotating the drive element. Further specific embodiments involve a helical guide structure that comprises a helical groove and a structure that comprises a tooth that engages with the helical groove.