Adjustable deadband control system
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United States of America Patent
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Jun 9, 2020
Grant Date -
Nov 23, 2017
app pub date -
Aug 9, 2017
filing date -
Jun 3, 2015
priority date (Note) -
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Abstract
Control systems include various combinations of pressure regulators, pilots, and pressure stabilizers to provide systems with adjustable deadbands for over pressure protection, adjustable deadbands for under pressure protection, adjustable deadbands for both over pressure and under pressure protection, pressure assisted closure for over pressure protection, pressure assisted closure for under pressure protection, pressure assisted closure for both over pressure and under pressure protection, or spring assisted closure for over pressure and under pressure protection.
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