Patent ID: 6123140
Filing Date: 2000-09-26
Classification: E06B

Abstract:
A device for rolling up a curtain comprising:a roller rotatably supported in a horizontal position by a stationary frame, the roller having a shaft, a common support connected to the shaft through a geometrical engagement, elastic means including a plurality of helical springs, each having a first extremity rigidly fastened to the common support, and each having a second extremity fastened to a respective support and constraint element each coupled in a shape mating manner to the roller, said common support being a step tapered cylinder defining stepped sections, each helical spring press-fitted to a corresponding section, each support and constraint element having a cylinder to which the respective second helical spring extremities are fastened, a raised edge engaged geometrically with an internal surface of the roller, and each support and constraint cylinder having a cavity made axially therethrough.