Off-set and sine-wave shaped butterfly plate to reduce aero-torque and reduce actuator size
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United States of America Patent
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Feb 20, 2018
Grant Date -
May 4, 2017
app pub date -
Nov 4, 2015
filing date -
Nov 4, 2015
priority date (Note) -
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Abstract
A butterfly valve plate has a base that includes an outlet facing surface, an inlet facing surface that is opposed to the outlet facing surface, and an axis of rotation about which the plate rotates. The inlet facing surface has an asymmetric sinusoidal configuration between a first end and a second end of the inlet facing surface. A sinusoidal length defines a distance between the first and second ends. The axis of rotation is disposed off a midpoint of the sinusoidal length. In addition, or alternatively, the axis of rotation is disposed off a centerline between the inlet facing surface and outlet facing surface.
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