PRESSURE REGULATING VALVE
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United States of America Patent
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Issued Date -
Sep 15, 2016
app pub date -
Nov 27, 2014
filing date -
Nov 28, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A pressure-regulating valve includes a body and a valve member. The valve member divides an inner side of the body into a pressure regulation chamber and an atmospheric pressure chamber, which is in communication with the atmosphere. The valve member is configured so that pressure of the pressure regulation chamber moves the valve member in a direction that changes a volume of the pressure regulation chamber. The pressure-regulating valve includes a cap that covers a portion of the body where the atmospheric pressure chamber is in communication with the atmosphere and a communication portion having a labyrinth structure and located between an inner surface of the cap and an outer surface of the body opposing the inner surface. The atmospheric pressure chamber is in communication with the atmosphere through the communication portion.
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