Flow Rate Control Valve
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United States of America Patent
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Issued Date -
Nov 1, 2018
app pub date -
Apr 4, 2018
filing date -
Apr 27, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A flow rate control valve includes: a housing having a port formed to allow a fluid to flow between internal and external spaces; and a rotor accommodated in the internal space of the housing rotatably about a rotation axis and having a control hole portion formed in a spherical outer wall portion, wherein the control hole portion is allowed to face the port by setting a rotational position of the rotor so that the fluid is allowed to flow between an inside portion of the rotor and the port, the port includes an annular seal body, and an opening edge of the control hole portion is shaped so that a portion of the opening edge of the control hole portion in contact with the seal body is displaced along the rotation axis in response to rotation operation of the rotor.
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