Drive mechanism and application to a blind with vertical slats

Details Drive mechanism and application to a blind with vertical slats Drive mechanism and application to a blind with vertical slats

1976-11-10

1977-09-13

Caun, Peter M.

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Venetian blind type

160172, 160176B, E06B 930

Patent

active

040475549

ABSTRACT:
A drive mechanism, for example of a blind with vertical slats, comprises first and second rotatable driving elements kinematically connected to a common rotary actuating element respectively by a first coupling arranged to immediately couple the first driving element for a limited rotation with the actuating element when the latter is rotated and a second coupling arranged to couple the second driving element for rotation with the actuating element after a given rotation of the latter. Each coupling comprises, on the first driving element and a facing fixed surface for the first coupling, and on the second driving element and the actuating element for the second coupling, a helix or spiral ramp and a facing transverse groove housing a ball which allows a limited relative rotation of the respective parts.

REFERENCES:
patent: 3194366 (1965-07-01), Hensel

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