Window balance assembly including sash support bracket
AssigneeCaldwell Manufacturing Company North America, LLC
InventorsRobert M. Lucci, Andrew Baglio
Life of this patent
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Abstract
A moving coil, constant force, curl spring window balance assembly for installation in a hung window assembly comprising a sash. The window balance assembly can include a carrier, a mounting bracket, a curl spring and a sash support bracket. The sash support bracket can be positioned intermediate the carrier and the mounting bracket. The sash support bracket can selectively engage at least one of the carrier or the mounting bracket. The sash support bracket is operable to supplement the holding force provided by the curl spring of the window balance assembly against the weight of the sash when the sash is in a raised position.
Claims21
A moving coil, constant force, curl spring window balance assembly for installation in a hung window assembly comprising a sash, the window balance assembly comprising:
- a carrier;
- a mounting bracket;
- a curl spring having a first curled portion and a second uncurled portion, the first portion being coupled to the carrier and the second portion being coupled to the mounting bracket;
- and
- a sash support bracket positioned intermediate the carrier and the mounting bracket, the sash support bracket selectively engaging one of the carrier or the mounting bracket;
- wherein the sash support bracket is operable to supplement the force provided by the curl spring of the window balance assembly against the weight of the sash when the sash is in a raised position.
Dependencies are inferred from the claim text.