Abstract: 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.

Abstract: A window balance assembly and a mounting bracket for a window balance assembly are provided. The mounting bracket includes a planar-shaped body having opposed planar surface with an opening extending through the body from one surface to the other. The mounting bracket further includes first and second hooks extending from the same edge of the body that selectively engage a curl spring and a carrier of a window balance assembly. The first hook is oriented in a different direction than the second hook such that the first hook has an upward bend and the second hook has a downward bend.

Abstract: A side-load, hung window assembly can include a sash guide attached to the window sash and extending into a space between the window sash and the jamb channel. The sash guide can include a recess at an outer end to provide clearance for the sash guide to pass over the uncurled end portion of the curl spring and the mounting device. In addition, an aesthetic cover can be disposed over the mounting device. Alternatively or in addition, a spring cover can be disposed over the uncurled end portion of the curl spring and the mounting device.

Abstract: A constant force window balance assembly for a side-load, hung window is disclosed. A side rail of a window sash disposed in a jamb channel has a first opening. The balance assembly is installed in the jamb channel and engages the sash at the first opening to support the sash with a counterbalance force. A carrier of the balance assembly includes a body having a sash engaging seat located at an upper end that directly engages the first opening in the side wall of the side rail of the window sash. The carrier can also include a lip located at an inner side of the carrier and extending upwardly from the sash engaging seat. The carrier can also include a projection at an upper end of the body to engage a retaining aperture in an uncurled end portion of a curl spring in a pre-installed configuration of the window balance.

Abstract: A window balance assembly may include a spring member, a mounting bracket, and a carrier. The spring member may include a first portion and a second portion. The mounting bracket may engage the first portion of the spring member. The carrier may include an upper body portion supporting the second portion of the spring member and removably engaging the mounting bracket, a lower body portion rotatably supporting a cam, and an elongated central portion extending between the upper body portion and the lower body portion. The elongated central portion may be resiliently flexible to allow movement of the lower body portion relative to the upper body portion.

Abstract: A side-load, hung window assembly can include a sash guide attached to the window sash and extending into a space between the window sash and the jamb channel. The sash guide can include a recess at an outer end to provide clearance for the sash guide to pass over the uncurled end portion of the curl spring and the mounting device. In addition, an aesthetic cover can be disposed over the mounting device. Alternatively or in addition, a spring cover can be disposed over the uncurled end portion of the curl spring and the mounting device.

Abstract: A constant force window balance assembly for a side-load, hung window is disclosed. A side rail of a window sash disposed in a jamb channel has a first opening. The balance assembly is installed in the jamb channel and engages the sash at the first opening to support the sash with a counterbalance force. A carrier of the balance assembly includes a body having a sash engaging seat located at an upper end that directly engages the first opening in the side wall of the side rail of the window sash. The carrier can also include a lip located at an inner side of the carrier and extending upwardly from the sash engaging seat. The carrier can also include a projection at an upper end of the body to engage a retaining aperture in an uncurled end portion of a curl spring in a pre-installed configuration of the window balance.

Abstract: The disclosure provides a window balance assembly for installation in a window assembly. The window balance assembly includes a carrier, a curl spring, and a mounting bracket. The spring element includes first and second portions. The first portion is contained by the carrier and the mounting bracket engages the second portion. The carrier has a first housing including a channel formed in an exterior side of the first housing and an aperture in which a receiver is included. The channel extends vertically upwardly from the aperture toward the top end of the first housing portion to facilitate a full-drop-in installation and removal of a window sash from the window assembly.

Abstract: The disclosure provides a window balance assembly for installation in a window assembly. The window balance assembly includes a carrier, a curl spring, and a mounting bracket. The spring element includes first and second portions. The first portion is contained by the carrier and the mounting bracket engages the second portion. The carrier has a first housing including a channel formed in an exterior side of the first housing and an aperture in which a receiver is included. The channel extends vertically upwardly from the aperture toward the top end of the first housing portion to facilitate a full-drop-in installation and removal of a window sash from the window assembly.

Abstract: A window balance assembly for a tilt-in window comprising a bracket, a spring and a carrier. The first spring has a first portion engaging the bracket. The carrier has a vertical portion including a first slot, a first projection extending outwardly from a first side of the vertical portion, and a second attachment projection extending outwardly from a second side of the vertical portion. The first slot receives a pivot bar of the tilt-in window via a vertical drop-in installation. One of the first and second attachment protrusions engages the first portion of the spring. The horizontal portion includes an aperture rotatably engaging a cam between a first position and a second position. The cam has a second slot aligned with the first slot when the cam is in the first position allowing for the pivot bar to move between the first slot and the second slot.

Abstract: A set of components is provided that may be adapted for constructing a plurality of window balance assemblies. The set of components may include a spring module and a carrier module. The spring module may include a housing engaging a first portion of a spring member. The housing may have a first engagement feature disposed at a first end and a second engagement feature disposed at a second end opposite the first end. The carrier module may be configured to receive a portion of a window sash and may include a third engagement feature. The third engagement feature may be connectable with the first engagement feature. The third engagement feature may also be connectable with the second engagement feature.

Abstract: 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.

Abstract: 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.

Abstract: A window balance assembly may be in a window jamb channel to provide a biasing force urging a window sash toward an open position. The 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 include a latch, a first head portion, and a first projection. The latch may engage the second portion of the spring element. The first head portion may be configured to abut a first wall of the window jamb channel when the window balance assembly is installed in the window jamb channel. The projection configured to extend through and engage an aperture in a second wall of the window jamb channel when the window balance assembly is installed in the window jamb channel.

Abstract: A window balance assembly for a tilt-in window comprising a bracket, a spring and a carrier. The first spring has a first portion engaging the bracket. The carrier has a vertical portion including a first slot, a first projection extending outwardly from a first side of the vertical portion, and a second attachment projection extending outwardly from a second side of the vertical portion. The first slot receives a pivot bar of the tilt-in window via a vertical drop-in installation. One of the first and second attachment protrusions engages the first portion of the spring. The horizontal portion includes an aperture rotatably engaging a cam between a first position and a second position. The cam has a second slot aligned with the first slot when the cam is in the first position allowing for the pivot bar to move between the first slot and the second slot.

Abstract: A set of components is provided that may be adapted for constructing a plurality of window balance assemblies. The set of components may include a spring module and a carrier module. The spring module may include a housing engaging a first portion of a spring member. The housing may have a first engagement feature disposed at a first end and a second engagement feature disposed at a second end opposite the first end. The carrier module may be configured to receive a portion of a window sash and may include a third engagement feature. The third engagement feature may be connectable with the first engagement feature. The third engagement feature may also be connectable with the second engagement feature.

Abstract: A window balance assembly comprising an improved locking carrier mechanism is disclosed. The locking mechanism is actuated when the window sash is tilted. Cam surfaces on the receiver of the mechanism engage cam followers in the clamshell-type housing of the carrier forcing them apart outwardly to lock the carrier in the jamb channel of a window assembly and prevent movement of the carrier in the channel. The receiver incorporates two cams that engage two cam follower surfaces in the housing to improve the distribution of the locking forces of the carrier in the jamb channel. A dual-locking carrier expands in both the axial and lateral directions to contact both front and back surfaces and opposing side surfaces of the jamb channel.

Abstract: A window balance assembly comprising an improved locking carrier mechanism is disclosed. The locking mechanism is actuated when the window sash is tilted. Cam surfaces on the receiver of the mechanism engage cam followers in the clamshell-type housing of the carrier forcing them apart outwardly to lock the carrier in the jamb channel of a window assembly and prevent movement of the carrier in the channel. The receiver incorporates two cams that engage two cam follower surfaces in the housing to improve the distribution of the locking forces of the carrier in the jamb channel. A dual-locking carrier expands in both the axial and lateral directions to contact both front and back surfaces and opposing side surfaces of the jamb channel.

Abstract: 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.

Abstract: 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.