Patent ID: 6820368
Filing Date: 2004-11-23
Classification: E05D,E05Y,E06B,Y10T

Abstract:
A window balance system comprising:a U-shaped channel comprising a plurality of openings; a spring connected to a system of pulleys located within the U-shaped channel; a cord with a first cord end and a second cord end, the fist cord end connected and threaded through the system of pulleys, the second cord end connected to a jamb mounting attachment; and a balance shoe, wherein the balance shoe comprises: a frame comprising an enlarged first end and a second end, wherein at least a portion of the second end of the frame is disposed within the U-shaped channel; a locking member proximal to the enlarged first end; a cam in communication with the locking member; and a connecting device comprising one or more resilient tabs for attaching the balance shoe within the U-shaped channel of the window balance, wherein the one or more resilient tabs extend at least partially through a corresponding number of the plurality of openings in the U-shaped channel.