| 摘要 |
A covering (20) for an architectural opening includes a head rail (22), a bottom rail (24) with a take-up roller (46) therein and an intermediate rail (26) with both the intermediate rail (26) and bottom rail (24) suspended from the head rail (20), a fabric material (28) interconnecting the intermediate rail (26) with the bottom rail (24) and being adapted to be wrapped around the roller (46) in the bottom rail (24), said fabric (28) including a pair of vertically oriented sheets (40,42) that are horizontally spaced by a plurality of vertically spaced horizontal vanes (44) with the vanes (44) being movable between open and closed positions by opposite vertical movement of the sheets (40,42) of material. A first control system (34) is provided for raising and lowering the bottom rail (24) and a second control system for (36) raising and lowering the intermediate rail (26) as well as tilting the intermediate rail (26) to effect an opening or closing of the vanes (44). <IMAGE> |
