DEVICE FOR COVERING OR UNCOVERING A SURFACE BY MEANS OF A COVER

摘要

Device characterized in that it comprises at least one fixed rigid support bar (7) arranged at the neighbouring of said surface, a drive unit (1), a helical screw (6) which is coaxial to said support bar and of which one end (5) is connected to the drive unit (1), a rigid shaft (14) connected to the cover (19) to be unfolded (or folded), and which is captive between the support bar (7) and the coaxial helical screw (6), and intended to slide along said screw (6).