Patent ID: 7441372
Filing Date: 2008-10-28
Classification: E05D,E05Y,Y10T

Abstract:
1. A balancing device attached to a suspended element, comprising: a shaft rotatably supported on a support; a pair of opposing pulleys attached to the shaft to be rotatable therewith; a pair of supporting ropes, one end of each of which being attached to the suspended element, and respective other ends being attached to the pulleys, wherein each of the pulleys comprises a spiral groove onto which respective of the ropes can be rolled for translating the suspended element, wherein the shaft is linked to an end of an elastic mechanism whose opposite end is attached to a friction disc, wherein the friction disc is rotatably supported on the support and is configured to be blocked against the support, to allow adjustment of a torsion load caused by simultaneous rotation of the pulleys and the shaft, and is provided with a head surface that is inclined with respect to an axis of the shaft and is configured to be rotated against a corresponding head surface of an opposing friction disc to exert an axial pressure on the friction disc, for blocking the friction disc against the support.