Single-unit double-track blind system with fly net and blind
A single-unit double-track blind system comprises two tracks, one for a fly net ( 28 ) and the other for a blind ( 27 ), combined in a single unit. The tracks may be oriented so that one of the fly net ( 28 ) and the blind ( 27 ) opens horizontally and the other opens vertically. The unit comprises four corner pieces ( 1 A, 1 B, 3 A, 3 B) connected by four linear pieces ( 10 A, 10 B, 13, 18 ). The linear pieces may have a stepped profile, whereby inner portions of the linear pieces carrying one of the tracks can fit inside a window or door opening, while outer portions of the linear pieces carrying the other of the tracks can overlap the edge of the opening and rest against a wall ( 40 ) or frame adjacent to it. The overlap hides any gap between the unit and inside of the opening, thereby reducing the precision required when measuring the opening for installation of the unit.
1 . A single-unit double-track blind system comprising two tracks, one for a fly net and the other for a blind, combined in a single unit:
wherein each track comprises a channel in which a respective one of the fly net or the blind is movable between open and closed positions;
wherein the unit comprises four corner pieces connected by four linear pieces to form a generally rectangular outline;
wherein the tracks are provided on the linear pieces;
wherein at least some of the linear pieces have a stepped cross-section, whereby, when the unit is mounted in a suitable sized window or door opening, an inner portion of each stepped linear piece can fit inside the opening, while an outer portion of each stepped linear piece can rest against a wall or frame adjacent to the opening.
2 . The system of claim 1 , wherein each linear pieces has a uniform cross-section so that it can be cut to a desired length to adapt the unit for use in window and door openings of varying sizes.
3 . The system of claim 1 , wherein one of the two tracks is provided on the inner portions of the stepped linear pieces, while the other of the two tracks is provided on the outer portions of the stepped linear pieces.