Patent ID: 7730927

Claim:
A vertical blind panel comprising: a plurality of substantially opaque fabric louvers and a plurality of sheer transparent or translucent fabric spacers, each of the plurality of fabric spacers being arranged between a respective pair of the plurality of fabric louvers, each of the plurality of fabric louvers and fabric spacers having pillar stitches on lateral edges thereof, each pillar stitch having a tensile strength, at least one of the plurality of fabric louvers connected to an adjacent one of the plurality of fabric spacers by a frangible fabric connection, the frangible fabric connection comprising: at least one connector yam alternately traversing from the pillar stitches of the at least one of the plurality of fabric louvers to the pillar stitches of the adjacent one of the plurality of fabric spacers and from the pillar stitches of the adjacent one of the plurality of fabric spacers to the pillar stitches of the at least one of the plurality of fabric louvers, the at least one connector yarn having a tensile strength less than that of the pillar stitches traversed by the connector yarn, such that the at least one of the plurality of fabric louvers may be separated from the adjacent one of the plurality of fabric spacers by applying tensile force to the connector yarn causing the connector yarn to break without damage to the pillar stitches.