Patent ID: 8146204
Filing Date: 2012-04-03
Classification: E05D,E05Y,Y10T

Abstract:
1. A compound balance for a window sash comprising: an inner sub-assembly comprising a torsion spring coupled to a spiral rod, the spiral rod extensible from a first end of the inner sub-assembly and comprising one or more first pins through which the compound balance engages the window sash; an extension spring disposed co-axially with and over the inner sub-assembly; and an assembly connector comprising: an extension spring attachment portion adapted to connect the assembly connector to a first end of the extension spring; an adjustment portion located adjacent to the extension spring attachment portion; an aperture extending along a longitudinal axis of the assembly connector, the aperture enabling the spiral rod to pass through the assembly connector; and a retaining portion adapted to receive an attachment device for connecting the spiral rod and the assembly connector.