Pressure/flow control valve and system using same
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United States of America Patent
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Jul 28, 2009
Grant Date -
Oct 28, 2004
app pub date -
Apr 26, 2004
filing date -
Apr 28, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A pressure/flow control valve that includes a first valve member and a second valve member moveable relative to one another and cooperating with one another so as to define a valve opening having a size that varies with a relative position between these members. The first magnet is operatively coupled to the first valve member and a second magnet is operatively coupled to the second valve member and magnetically coupled to the first magnet. The first and second magnets are disposed such that a repulsive force between them increases asymptotically as the magnets move together, thereby providing a dampening force between the first and second valve members that allows these valve members to be moved rapidly from one position to the next in a highly controlled fashion.
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