ROTARY VALVE
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United States of America Patent
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N/A
app pub date -
Oct 31, 2016
filing date -
Feb 10, 2012
priority date (Note) -
Abandoned
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Abstract
A rotary valve capable of high flow rates, minimal pressure drop, and rapid actuation is presented. According to one aspect, the rotary valve is characterized by a unique pressure balancing system operating on the rotary spool of the valve to reduce side force caused by pressure at the flow ports. According to another aspect, the rotary valve is characterized by a unique internal shiftable blocking spool in response to a failure condition or a modulating signal. According to another aspect, a unique interface is provided for sealing a port of a rotary valve to an outer surface of a rotary spool. According to another aspect, the rotary valve is characterized by a unique interface provided for sealing a port to an outer surface of the rotary spool. According to another aspect, a rotary valve is characterized by a unique three-way three-or-more-position configuration. According to another aspect, a rotary valve is characterized by a unique four-port three-position configuration.
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