Window shade with a shade panel
OwnerManfred Schmidtinventor
Life of this patent
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Abstract
The invention pertains to a window shade with a shade panel, with a rotatable winding shaft 1 for winding up the panel onto the winding shaft 1 to form a roll 2 and for unwinding the panel from this winding shaft 1 to form a panel surface 3, and with a drive M. The invention is characterized in that control means R are provided upline of the winding shaft 1 to vary the rotational speed of the winding shaft in such a way that the winding shaft 1 has several periods in each revolution, where the angular velocity changes in a predetermined manner within each period.
Claims43
Window shade with a shade panel, with a rotatable winding shaft (1) for winding up the shade panel onto this winding shaft (1) to form a panel roll (2) and for unwinding the shade panel from this winding shaft (1) to form a panel surface (3), and with a window shade drive (M), characterized in that control means (R) are provided upline of the winding shaft (1) to vary the rotational speed of the winding shaft in such a way that the winding shaft 1 has several periods in each revolution, where the angular velocity changes in a predetermined manner within each period.
Dependencies are inferred from the claim text.