Operating device for a venetian blind to control raising and low

Details Operating device for a venetian blind to control raising and low Operating device for a venetian blind to control raising and low

1997-04-18

1998-05-12

Purol, David M.

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Venetian blind type

1601761R, 1601782R, E06B 930

Patent

active

057494053

ABSTRACT:
An operating device for a Venetian blind includes a rotary tilt control unit which is adapted to be coupled to a shaft of the Venetian blind so as adjust tilting angles of slats. A positioning tube is connected to the tilt control unit and has a top opening and an axially extending slot. A retaining member is axially movable in the positioning tube, and has a tapered upper end portion extendible through the top opening and a radial pin hole aligned with the slot. A biasing spring biases the retaining member upwardly so that pull ropes which extend through the positioning tube can be clamped between the tapered upper end portion and the positioning tube. An elongated sleeve disposed around the positioning tube is formed with a radial hole that is aligned with the pin hole, and is provided with at least one hook projection for hooking end portions of the pull ropes thereon. An insert pin extends through the radial hole, the slot and into the pin hole. The elongated sleeve is movable downwardly relative to the positioning tube so as to retract the tapered upper end portion into the positioning tube for releasing the pull ropes.

REFERENCES:
patent: 5465775 (1995-11-01), Biba et al.
patent: 5472035 (1995-12-01), Biba et al.
patent: 5501262 (1996-03-01), Inaba et al.
patent: 5553649 (1996-09-01), Chisaka et al.
patent: 5553653 (1996-09-01), Rozon
patent: 5645685 (1997-07-01), Furhman

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