BOTTOM-UP/TOP-DOWN RETRACTABLE CELLULAR SHADE

摘要

A covering for an architectural opening includes a head rail, a bottom rail with a take-up roller therein and an intermediate rail with both the intermediate rail and bottom rail suspended from the head rail, a fabric material interconnecting the intermediate rail with the bottom rail and being adapted to be wrapped aroun d the roller in the bottom rail, said fabric including a pair of vertically orient ed sheets that are horizontally spaced by a plurality of vertically spaced horizontal vanes with the vanes being movable between open and closed positions by opposite vertical movement of the sheets of material. In a first embodiment a first control system is provided for raising and lowering the bottom rail and a second control syste m for raising and lowering the intermediate rail as well as tilting the intermedia te rail to effect an opening or closing of the vanes. In alternative embodiment, the bottom rail is controlled with a spring balanced system so that it remains in any positi on in which it is normally set.