Air damper
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jan 12, 2016
Grant Date -
N/A
app pub date -
May 30, 2012
filing date -
Aug 31, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A low cost air damper that provides a good seal with low torque requirements. Blade seals of square cross sectional configuration are provided on each damper blade so that the blade seals engage adjacent blades before the blades are fully closed. L-shaped side seals and multiple discs that receive the ends of the blades serve collectively to seal between sides of the damper frame and the blades when the blades are closed even when the blades are not cut precisely. One edge of the L-shaped side seals engages and seals against the discs and the other edge of the side seals laps over and seals against a flat side of the blades and against the square blade seals. A low friction coating is applied to the side seals to further reduce friction.
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