Fluid filter with thermal control and pressure bypass
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United States of America Patent
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Feb 6, 2018
Issued Date -
N/A
app pub date -
Sep 30, 2014
filing date -
Oct 2, 2013
priority date (Note) -
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Abstract
A filter assembly includes a filter media for filtering a fluid, and a valve having a fluid inlet and a fluid outlet for controlling a flow of the fluid through the filter assembly. The valve includes a thermally active element that changes shape between a first configuration and a second configuration in response to a temperature variation. When the thermally active element is in the first configuration the valve is open with the fluid inlet in fluid communication with the fluid outlet, and the thermally active element changes shape to the second configuration to close the valve. The thermally active element may move a valve poppet against a valve seat to close the valve. A pressure bypass is configured to open the valve in response to a pressure increase in the filter assembly above a threshold pressure when the thermally active element is in the second configuration.
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