Doubled seal disk for piston pump
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United States of America Patent
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Aug 6, 2013
Grant Date -
Sep 16, 2010
app pub date -
Feb 16, 2010
filing date -
Mar 10, 2009
priority date (Note) -
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Abstract
A pump assembly in the context of a piston pump having a piston carrying a disk which extends radially outwardly to engage a wall of a chamber to substantially prevent fluid flow in one direction and yet permit deflection of the disk away from the wall of the chamber to permit flow in the other direction; the improvement in which two or more of similar such disks are provided spaced axially adjacent one another.
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