Adjustable dose chamber
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United States of America Patent
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Apr 14, 2015
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app pub date -
Dec 24, 2009
filing date -
Dec 24, 2008
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Abstract
A compressible fluid powered device includes a dose chamber. An inlet supplies pressurized fluid to the dose chamber. An outlet for releases pressurized fluid from the dose chamber. A moveable divider divides the dose chamber into a primary space and a secondary space, movement of the divider expanding one space at the expense of the other. At least one flow pathway from one space to the other, which collectively allow gas to flow in both directions past the divider and pressure to equalize across the divider, the flow pathway being much more limited than the outlet.
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