Flexible or portable closure – partition – or panel – Plural and/or with rigid closure – Plural strip – slat – or panel assemblies
Patent
1992-01-21
1993-08-03
Johnson, Blair M.
Flexible or portable closure, partition, or panel
Plural and/or with rigid closure
Plural strip, slat, or panel assemblies
1601761, E06B 348
Patent
active
052320375
ABSTRACT:
A venetian blind in which there are at least two sets of slat supports each in the form of ladders, each set of ladder support comprising two or more ladders these ladders each having longitudinally spaced cross-rungs at the same location with one group of venetian blind slats being mounted on the cross-rungs of one of the ladders of each set and other slats being mounted on the other cross-rungs. In use, in an open position of the blind, the two or more slats at the safe location are superimposed on one another. The two or more ladders of each set are independently controllable to provide different visual effects in the closed position of the blind.
In another construction used for a skylight, individual slats are mounted between depending double cross-rungs of the slat support ladders.
REFERENCES:
patent: 2673607 (1954-03-01), Rulfs
patent: 4628979 (1986-12-01), Hsu
patent: 4651794 (1987-03-01), Bytheway, Jr.
patent: 4708188 (1987-10-01), Bytheway, Jr.
Hunter Douglas Inc.
Johnson Blair M.
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