Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Venetian blind type
Patent
1988-05-11
1990-09-25
Purol, David M.
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
Venetian blind type
1601781, 160900, E06B 936
Patent
active
049586726
ABSTRACT:
Suspension system for vertical blinds, comprising a track, one side of which is partially open, a non-circular drive rod for adjusting the position of hooks, a number or slides each provided with a sleeve having an internal shape that is adapted to suit the section of the non-circular rod and externally provided with a worm wheel which interacts with a second worm wheel for a suspension hook, in a manner such that the slides are movable along the drive rod and the suspension hooks can be rotated by rotating said drive rod with the aid of a cord placed over a pulley. Means, also operated by a cord pulley with cord, are present for displacing the slides in the longitudinal direction of the track for pushing the blinds to be suspended in and out, respectively. The slides are mutually connected by coupling elements by which the mutual distance of the slide is limited.
The means for displacing the slides (1, 5) are formed by the cord (3, 4) being guided via guide pulleys at one end of the track (20) through the interior of the length of the track, placed over a return pulley at the other end of the track and fastened to the first slide.
Preferably the coupling elements are concertina-like elements of springy material.
REFERENCES:
patent: 4122884 (1978-10-01), Salzmann
patent: 4140169 (1979-02-01), Arena
patent: 4214622 (1980-07-01), Debs
patent: 4293021 (1981-10-01), Arena
patent: 4628981 (1986-12-01), Ciriaci et al.
patent: 4648436 (1987-03-01), Oskam
patent: 4657060 (1987-04-01), Kaucic
patent: 4736784 (1988-04-01), Boloix
Burton Ralph M.
Purol David M.
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