Raising and lowering mechanism, in particular for roller blinds

Details Raising and lowering mechanism, in particular for roller blinds Raising and lowering mechanism, in particular for roller blinds

2005-12-06

2005-12-06

Lev, Bruce A. (Department: 3634)

Flexible or portable closure, partition, or panel

Roll type

With rotating means

C160S17810R, C160S320000

Reexamination Certificate

active

06971435

ABSTRACT:
The operation of a roller blind occurs via a ball cord and a pulley. The ball cord may be wound several turns around the pulley, in that oblong axial tracks have been provided in the pulley. Thereby the winding may be preserved without jamming between the windings. Greater forces may be transmitted to the pulley than in case of known constructions.

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