Integrated system for filtering and dispensing fluid having fill, dispense and bubble purge strokes
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United States of America Patent
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-
Nov 16, 1993
Grant Date -
N/A
app pub date -
May 17, 1991
filing date -
May 17, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An integrated system and method are disclosed for filtering a fluid and for dispensing a desired volume of the fluid. The integrated system includes a feed pump sub-assembly for receiving fluid and for directing the fluid through a filter. A filtration sub-assembly is joined with the feed pump sub-assembly for receiving fluid from the feed pump sub-assembly and for housing the filter. A dispense pump sub-assembly is integrally joined with the filtration sub-assembly and defines a dispense chamber for receiving filtered fluid from the filtration sub-assembly. The dispense pump sub-assembly includes a dispensing means which is moveable from a fill position to a purge position for purging at least a portion of any gas bubbles from the dispense chamber. The gas bubbles are purged through a purge outlet disposed above a fluid inlet and a fluid outlet of the dispense chamber. The dispensing means is also moveable from the purge position to a dispense position for dispensing a desired volume of the fluid from the integrated system.
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