Window sash counterbalance with independently operable sashes

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9109386
APP PUB NO 20140150346A1
SERIAL NO

13836306

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A window, with a hybrid sash counterbalance and assist mechanism, includes a frame having upper and lower sashes slidable within the frame. A sash coupling element extends between the upper and lower sashes. The hybrid sash counterbalance and assist mechanism is coupled with the sash coupling element. The window with the hybrid sash counterbalance and assist mechanism is operable in a sash counterbalance mode and in an independent sash movement mode. In the sash counterbalance mode, movement of the upper or lower sash causes converse movement of the lower or upper sash through the sash coupling element, and the movement of the upper or lower sash is assisted. In the independent sash movement mode, one of the upper and lower sashes is held static while the other of the lower or upper sashes is moved, and the moved sash is assisted.

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Patent Owner(s)

  • MARVIN LUMBER AND CEDAR COMPANY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
DeBoer, Nathan H Salol, US 14 150

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