초록 ▼

A fenestration control includes a single loop cord in association with guide members and a drive pulley built into a generally channel-shaped framework and is specifically designed for use with pleated or cell-type shades. The entire shade assembly is capable of being removably installed within wind

A fenestration control includes a single loop cord in association with guide members and a drive pulley built into a generally channel-shaped framework and is specifically designed for use with pleated or cell-type shades. The entire shade assembly is capable of being removably installed within window openings and the like and may be operated manually, or by single or dual motor drives depending upon the size and load requirements of the shade.

대표청구항 ▼

In an adjustable shade assembly of the accordion or cell type wherein a generally rectangular frame is installed in outer surrounding relation to an opening in a building structure, there being a stationary rail disposed along one end of said frame, a movable rail in parallel to said stationary rail

In an adjustable shade assembly of the accordion or cell type wherein a generally rectangular frame is installed in outer surrounding relation to an opening in a building structure, there being a stationary rail disposed along one end of said frame, a movable rail in parallel to said stationary rail and movable toward and away from an opposite end of said frame with a shade member having opposite ends, each of which is attached to a respective one of said rails for expansion and contraction in response to advancement of said movable rail toward and away from said opposite end of said frame, the improvement comprising: guide members at four corners of said frame, said shade member also having opposite sides extending between said rails including a rotatable drive pulley at one corner of said frame adjacent to one end of said stationary rail, and means resiliently mounting the guide members at said opposite end of said frame; a cord trained over said guide members including said drive pulley, said cord including generally U-shaped loop sections extending along said opposite sides of said shade member, each said loop section extending under a respective one of said guide members at said opposite end of said frame and secured to opposite ends of said movable rail such that rotation of said drive pulley imparts movement to said cord in a direction advancing the opposite ends of said rail in the same direction, said resilient mounting means maintaining a substantially constant tension on said cord when said movable rail is advanced by said cord toward and away from the opposite end of said frame; and drive means engaging and reversibly rotating said drive pulley at said one corner of said frame thereby advancing said shade member and said movable rail across the opening.