Operation group for automatically winding up curtains

Abstract

An operation group for curtains with winding roll, including a mechanism (1), a stop device (90) and a hub (9), with the mechanism (1) aimed at imposing and stabilizing a pre-established pre-loading value for first elastic means (2), present in the winding roll (3), with the stop device (90) being aimed at locking the winding roll (3) to stabilize the curtain in any unwound position and with the hub (9) aimed at supporting the roll (3) at one of its ends. The above operation group (G) includes the mechanism (1) connected to one end (3a) of the roll (3) and the stop device (90), which is connected to the other end of the roll (3), so as to define the hub (9).

Dependencies are inferred from the claim text.