Window balance assembly

摘要

A window balance assembly may include a carrier, a spring element, and a mounting bracket. The spring element may include first and second portions. The first portion may be coupled to the carrier. The mounting bracket may engage the second portion of the spring element and may selectively engage the carrier. The mounting bracket may include a first mounting surface disposed at a non-perpendicular angle relative to an exterior surface of carrier when the window balance assembly is in an uninstalled configuration. The first mounting surface may be substantially parallel to the exterior surface of the carrier when the window balance assembly is in an installed configuration and the mounting bracket is disengaged from the carrier.

主权项

1. A window balance assembly comprising:
first and second members configured to engage a window sash and a window jamb, respectively; a spring element including first and second portions coupled to the first and second members, respectively, the spring element biasing the window sash; and a debris dam movable with the first member and disposed between the second member and at least a portion of the first member, the debris dam reducing exposure of at least one of the spring element and the first member to debris; wherein the first member includes a carrier engaging a curled portion of the spring element; and wherein the second member engages the carrier in when the window balance assembly is in an uninstalled configuration, the second member including a stress riser coupling the second member to the carrier, wherein the stress riser fails in response to application of a force during installation of the window balance assembly to disengage the second member from the carrier.