Side-load, constant force window and window balance assembly
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United States of America Patent
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Aug 21, 2018
Grant Date -
Mar 16, 2017
app pub date -
Sep 6, 2016
filing date -
Sep 14, 2015
priority date (Note) -
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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.
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