초록 ▼

A control system for a top down/bottom up covering for an architectural opening includes a common drive shaft for raising and lowering a middle rail and a bottom rail between which a flexible shade material extends. A control element operates a spool lift system and a roller lift system, with the sp

A control system for a top down/bottom up covering for an architectural opening includes a common drive shaft for raising and lowering a middle rail and a bottom rail between which a flexible shade material extends. A control element operates a spool lift system and a roller lift system, with the spool lift system being associated with the middle rail and the roller lift system being associated with the bottom rail. The lift systems are sequentially operated when the drive shaft is driven in either direction by the control element.

대표청구항 ▼

The invention claimed is: 1. A shade material for coverings for architectural openings comprising in combination:a first sheet of shade material having a length and a width,a second sheet of material having a greater length than said first sheet of material and substantially the same width as said f

The invention claimed is: 1. A shade material for coverings for architectural openings comprising in combination:a first sheet of shade material having a length and a width,a second sheet of material having a greater length than said first sheet of material and substantially the same width as said first sheet of material,a plurality of parallel continuous lines of hot-melt adhesive extending across the width of one of said first and second sheets of material,said first and second sheets being adhesively secured together at intervals along said continuous lines of adhesive which are activated in said intervals but not in gaps existing between said intervals such that loops of material are formed in said second sheet between said lines of adhesive and said gaps exist along said lines of adhesive between said intervals where the sheets are not secured.