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 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 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 pivot bar for a tiltable window sash may include an elongated body, an anti-rotation feature and a retaining finger. The elongated body has first and second opposing ends and first and second opposing surfaces extending between the first and second ends. The elongated body also has a first longitudinal axis extending through the first and second ends. The first end may be configured to be received in a window balance assembly. The retaining finger may extend from the second surface and may be configured to engage the tiltable window sash.

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 pivot bar for a tiltable window sash may include an elongated body, an anti-rotation feature and a retaining finger. The elongated body has first and second opposing ends and first and second opposing surfaces extending between the first and second ends. The elongated body also has a first longitudinal axis extending through the first and second ends. The first end may be configured to be received in a window balance assembly. The retaining finger may extend from the second surface and may be configured to engage the tiltable window sash.

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: An air and/or debris dam for moving coil balance assembly for a hung window is disclosed. The air and/or debris dam is located between the carrier and a mounting location of a moving coil window balance assembly. The air and/or debris dam can travel within the jamb channel of a window frame assembly to inhibit airflow and/or the deposition of dust and/or debris in the jamb channel.

Abstract: A side load constant force window balance assembly is disclosed. The balance assembly has a spring member, a spring housing, and a carrier module. The spring housing and carrier module are coupled to the spring member. The carrier module is configured to support a portion of a window sash and has an engagement feature configured to selectively engage the window frame.

Abstract: An air and/or debris dam for moving coil balance assembly for a hung window is disclosed. The air and/or debris dam is located between the carrier and a mounting location of a moving coil window balance assembly. The air and/or debris dam can travel within the jamb channel of a window frame assembly to inhibit airflow and/or the deposition of dust and/or debris in the jamb channel.

Abstract: A window balance assembly for installation in a window assembly can include a balance portion that is connected to a carrier that may have a first and second side. The balance portion may be arranged to be drawn out of the carrier on the first or second sides of the carrier. The balance portion may be a spring member or element. As the spring element is drawn out of the carrier, contact made between the spring element and the carrier may generate a friction that results in undesired chatter of the spring element and/or audible noise from the carrier. This friction may be reduced by controlling the contact made between the spring element and the carrier. Further, a reduction of friction between the spring element and the carrier may result in a reduction in spring chatter and a reduction in audible noise from the carrier.

Abstract: An air and/or debris dam for moving coil balance assembly for a hung window is disclosed. The air and/or debris dam is located between the carrier and a mounting location of a moving coil window balance assembly. The air and/or debris dam can travel within the jamb channel of a window frame assembly to inhibit airflow and/or the deposition of dust and/or debris in the jamb channel.

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 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: An air and/or debris dam for moving coil balance assembly for a hung window is disclosed. The air and/or debris dam is located between the carrier and a mounting location of a moving coil window balance assembly. The air and/or debris dam can travel within the jamb channel of a window frame assembly to inhibit airflow and/or the deposition of dust and/or debris in the jamb channel.

Abstract: As the spring element is drawn out of the carrier, the contact made between the spring element and the carrier may generate a friction that results in undesired chatter of the spring element and/or audible noise from the carrier. This friction may be reduced by controlling the contract made between the spring element and the carrier. Further, a reduction of friction between the spring element and the carrier may result in a reduction in spring chatter and a reduction in audible noise from the carrier.

Abstract: A side load constant force window balance assembly is disclosed. The balance assembly has a spring member, a spring housing, and a carrier module. The spring housing and carrier module are coupled to the spring member. The carrier module is configured to support a portion of a window sash and has an engagement feature configured to selectively engage the window frame.

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.