Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Venetian blind type
Patent
1986-06-26
1988-10-11
Britts, Ramon S.
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
Venetian blind type
160 841, 1601781, 188 821, E06B 932
Patent
active
047763817
ABSTRACT:
A universal tensioning device for blinds and shades comprises a U-shaped channel member which has oppositely disposed open ends which provide first and second access passages and a third access passage opening through the bottom wall of the channel member. A winding shaft is mounted for rotation in the side walls of the channel member and extends transversely across the channel directly above the third access passage. A ratchet wheel is provided at one end of the winding shaft and is located externally of a side wall of the channel. A socket is formed in the end of the winding shaft. A dog is pivotally mounted on the side wall of the channel member for movement into and out of engagement with the ratchet wheel. A biasing spring is provided for releaseably urging the dog toward the ratchet wheel. A pair of these tensioning devices are located in a chamber formed in the header rail of a venetian blind which also accommodates the slat angling mechanism and height adjustment mechanism. An inclined shade is also provided in which a pair of shade support wires are provided for supporting the shade in an inclined plane.
REFERENCES:
patent: 2129606 (1938-09-01), Nisenson
patent: 2202358 (1940-05-01), Stone
patent: 3721285 (1973-03-01), Debs
patent: 3799236 (1974-03-01), Debs
patent: 3818969 (1974-06-01), Debs
patent: 3952789 (1976-04-01), Marotto
patent: 4057220 (1977-11-01), Kudlacek
patent: 4202395 (1980-05-01), Heck et al.
patent: 4433713 (1984-02-01), Kelly
patent: 4473101 (1984-09-01), Langeler
patent: 4557309 (1985-12-01), Judkins
Britts Ramon S.
Purol David M.
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