Window balance assembly

A window balance assembly comprising:

• a mounting bracket comprising a body portion, a first connection and at least one aperture extending through the body portion;
• a carrier comprising a housing extending along a longitudinal axis from a first end to a second end, the housing comprising a first housing portion and a second housing portion which together define an interior space of the housing, a first surface located in the interior space that extends perpendicularly to the longitudinal axis and a plurality of projections extending from the first end of the carrier;
• a receiver supported by the carrier near the second end of the carrier and comprising a cam rotatable about a first axis between a first position and a second position, wherein rotation of the cam from the first position to the second position operates to change a dimension of the carrier;
• a constant force curl spring comprising a curled portion disposed substantially within the interior space of the housing of the carrier and an uncurled portion extending outside of the interior space of the housing of the carrier and terminating at a distal end, wherein the uncurled portion engages the mounting bracket at the first connection;
• wherein a first engagement feature of the uncurled portion of the curl spring is located near the distal end of the uncurled portion of the curl spring;
• wherein the first engagement feature of the uncurled portion of the curl spring engages the first connection of the mounting bracket to attach the curl spring to the mounting bracket;
• wherein the body portion of the mounting bracket includes a first side and a second side, wherein the first side comprises a recess;
• wherein the first connection is located on the first side of the body portion;
• wherein the uncurled portion of the curl spring is at least partially received in the recess;
• wherein, in an uninstalled, assembled configuration of the window balance assembly, the mounting bracket is retained with the carrier, a second surface at a lower end of the mounting bracket contacts an upper surface of at least one of the plurality of projections extending from the first end of the carrier and the curled portion of the curl spring bears against the first surface of the carrier and the curl spring exerts a force against the first connection of the mounting bracket to retain the mounting bracket against the first end of the carrier.