Patent ID: 7568260
Filing Date: 2009-08-04
Classification: E05D,E05Y,Y10T

Abstract:
1. An adjustable balance system, comprising: a housing having at least one long hole in a wall of the housing, and enclosing an elastic suspension means, a floating anchor assembly and a fixed anchor assembly; wherein one extremity of the suspension means is anchored to a first end of the housing, the other extremity of the suspension means is connected to a first extremity of the floating anchor assembly, wherein the floating anchor assembly comprises at least one first roller member and a brake comprising two opposing plates joined on one end by a connection member, wherein the inner surfaces of the two plates form an inside thread hole to accommodate a screw, and the outer surfaces of the two plates are aligned with two opposite walls of the housing, wherein the head of the screw is on the same side as the long hole of the housing, and wherein rotating the screw adjusts the friction force between said opposite walls and the plates; and wherein the fixed anchor assembly comprises at least one second roller member, wherein one extremity of the fixed anchor assembly is anchored to a second end of the housing; and a cord connected to a second extremity of the floating anchor assembly, wherein the cord extends over said second roller member mounted on the fixed anchor assembly and over said first roller member mounted on the floating anchor assembly, wherein the free extremity of the cord extends beyond the second end of the housing.