Patent ID: 7537040

Claim:
A roller shade system comprising: first and second roller shades, each including a rotatably supported roller tube and a flexible shade fabric windingly received by the roller tube, each roller shade further including a drive system including a controller and operably engaging the associated roller tube for drivingly rotating the roller tube for movement of a lower end of the associated shade fabric between a fully-opened shade position and a fully-closed shade position, each of the drive systems adapted to vary the rotational speed at which the associated roller tube is rotated, the second roller tube having an outer diameter that is larger than an outer diameter of the first roller tube; and the first and second roller shade controllers directing the first and second drive systems to rotate the first and second roller tubes respectively, the first roller shade controller adapted to direct the first drive system to rotate the first roller tube at a rotational speed that is greater than a rotational speed at which the second roller tube is rotated by the second drive system such that the lower ends of the first and second shade fabrics move together at substantially the same linear shade speed.