Patent ID: 7124802

Claim:
A cascade shade comprising the combination of a horizontal blind having a head rail, a bottom rail, a plurality of louvers mounted on ladders extending between said head rail and said bottom rail, and controls for raising and lowering the blind, and for operating the louvers between open and closed positions, and a cover assembly attached to said blind, said cover assembly comprising a sheet of material having a width to extend across the blind and a length at least equal to the spacing between said bead rail and said bottom rail with the blind fully lowered, said sheet having an upper edge and a lower edge, means attaching said upper sheet edge to said of material blind head rail and said lower sheet edge to said blind bottom rail, a plurality of rigid parallel sheet retaining members extending across the width of said sheet of material transversely of its length and gripping transverse bights of said sheet material to divide said sheet of material into horizontal panels, and means for securing said sheet retaining members of material to said blind without interfering with the operation of said blind by said controls whereby said sheet of material with said horizontal panels covers said blind when said blind is lowered and provides overlapping loops or folds of sheet material, at least when said blind is raised.