VOLUMETRIC PUMP WITH BLEED MECHANISM
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United States of America Patent
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Issued Date -
Aug 17, 2017
app pub date -
Feb 27, 2015
filing date -
Mar 2, 2014
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Abstract
A pump having two pistons which are parallel and in opposition and are disposed in two, cylindrical, cavities in a pump body, including at least one inlet port and at least one outlet port connected to a rotational port-switching device which can move axially along its rotational axis and is held in abutment in the pump body by a restoring member, in the form of a spring.
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