Particle-based check valve
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United States of America Patent
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Oct 12, 2004
Grant Date -
Oct 2, 2003
app pub date -
Mar 28, 2002
filing date -
Mar 28, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A check valve for a fluidic system includes a fluidic conduit having an inlet with a first particle barrier, an outlet with a second particle barrier and a fluid chamber between the inlet and the outlet; and at least one particle disposed in the fluid chamber, the particle or particles aggregating at the first particle barrier to form a first hydrodynamic resistance when a first fluid pressure at the inlet is less than a second fluid pressure at the outlet, the particle or particles aggregating at the second particle barrier to form a second hydrodynamic resistance when the first fluid pressure is greater than the second fluid pressure.
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