Blind slats lifting device

Details Blind slats lifting device Blind slats lifting device

1990-12-28

1992-04-14

Purol, David M.

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Venetian blind type

E06B 930

Patent

active

051038889

ABSTRACT:
A pair of lifting cords are connected to a bottom rail at their lower ends and are connected to ends of a head box at their upper ends so as to lift and lower the slats of a blind. A pair of winding drums are provided in the head box which rotate together and move in the longitudinal direction of the head box. The lifting cords are introduced into the head box at the ends thereof. The lifting cords are guided so as to extend in the moving direction of the winding drums and are fitted to the wind starting ends of the winding drums. The moving ranges of the winding drums are set inside relative to the lifting cord introducing portions. As the winding drums rotate, the lifting cords are wound around the outer periphery of the winding drums. As the lifting cords are wound, the slats are lifted and lowered.

REFERENCES:
patent: 3089664 (1963-05-01), Faber
patent: 3181595 (1965-05-01), Pender
patent: 3352349 (1967-11-01), Hennequin
patent: 4200135 (1980-04-01), Hennequin
patent: 4955421 (1990-09-01), Torti

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