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Priority to ES1973187355UpriorityCriticalpatent/ES187355Y/en
Publication of ES187355UpublicationCriticalpatent/ES187355U/en
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Publication of ES187355YpublicationCriticalpatent/ES187355Y/en
Venetian blind drive device, characterized essentially by comprising a crown, driven by an endless screw, which transmits a rotational movement to a cylindrical tube in which the extension and collection strands of the blinds attached thereto are wound up, and that hang the terminals of the slats that support the slats; said cylindrical tube, during its rotation, moves axially in one direction or another according to the rotation, to provide a helical and uniform winding of the cords. (Machine-translation by Google Translate, not legally binding)
Improvements in the construction of drive groups for the support barreta of a venetian shutter. (Machine-translation by Google Translate, not legally binding)