Patent ID: 6047759
Filing Date: 2000-04-11
Classification: E06B

Abstract:
A cordless shade for a window opening which is manually actuated without a pull cord extending from the top of the shade, said cordless shade comprising:a) a head rail containing a bar, said bar having at one end thereof a spring and a spring tensioning mechanism tensioning said spring upon bar rotation in one direction and releasing spring tension upon opposite bar rotation, said releasing accomplished by applying a force rotating said bar in said one direction;b) a bottom rail adapted to be raised and lowered relative to said top rail for drawing and releasing the shade;c) a cellular shade fabric extending between said head and bottom rails for covering said window, said shade fabric having a cross-sectional polygonal cellular configuration which is collapsible into a plurality of vertically stacked, extendible fabric plies nested between said head rail and said bottom rail when said shade is raised and extendible to a first position when the shade is fully lowered;d) at least first and second longitudinally spaced openings extending through said fabric from the bottom to the top of said fabric;e) at least two lift cord segments, each extending from said bottom rail and through said fabric openings for raising and lowering said bottom rail relative to said top rail; andf) a wrap mechanism associated with said bar and said lift cords to assure that said lift cords uniformly and in unison with one another wrap around said bar in a circumscribing manner as said shade is raised and lowered while said bottom rail remains parallel with said head rail.