Variable volume bore piston pump
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United States of America Patent
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Jun 23, 2015
Grant Date -
Apr 10, 2014
app pub date -
Mar 13, 2013
filing date -
Mar 30, 2012
priority date (Note) -
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Abstract
In a piston pump having a piston axially slidable in a chamber in a piston chamber forming body between a one-way inlet valve and an axially spaced one-way outlet valve to dispense fluid, an arrangement for varying the volume of the chamber by varying the axial location of the one-way inlet valve within the chamber by engagement of the one-way inlet valve with the piston to move the one-way inlet valve to different axially spaced locations within the chamber.
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