Cord-lock mechanism

Details Cord-lock mechanism Cord-lock mechanism

1992-12-04

1994-05-31

Purol, David M.

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Venetian blind type

24461, E06B 9324

Patent

active

053160665

ABSTRACT:
A cord-lock mechanism to take up or expand slats of Venetian blind, comprising a fixed hollow drum with an end cover secured to window frame or door frame; a pulley block fixed in the hollow drum, a pulley at the pulley block, a brake wheel reciprocally movable between a braking position and a release position in a guide channel formed on the pulley block; and a lift cord made of soft material, wound around the brake wheel and the pulley, having its both ends extended to the respective ends of the headrail, passed through the middle cord outlets, turned downwards and tied to the respective ends of the foot rail so that all or part of the slats and the tubular foot rail can be raised and the slats can be taken up by pulling of the lift cord.

REFERENCES:
patent: 2544184 (1951-03-01), Rosenbaum
patent: 2555709 (1951-06-01), Sherwood
patent: 2620866 (1952-12-01), Rosenbaum
patent: 3552473 (1969-05-01), Persson
patent: 3605852 (1971-09-01), Vecchiarelli
patent: 4463791 (1984-08-01), McClure

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