Gear Driven Damper with Blades for Sensing Pressure Differential
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United States of America Patent
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N/A
Issued Date -
Dec 2, 2004
app pub date -
Jun 2, 2003
filing date -
Jun 2, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A fluid flow damper for use within a duct includes a first blade having a wing section and a base section. The damper also includes a second blade having a wing section and a base section engaged with the base section of said first blade. A first passage is defined by the base section of the first blade with one or more ports providing fluid communication between the passage and a fluid upstream of the damper within the duct in order to measure the velocity pressure plus static pressure within the duct. Additionally, a second passage is defined by the base section of the second blade with one or more ports providing fluid communication between the passage and a fluid downstream of the damper within the duct in order to measure the static pressure within the duct.
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