Volumetric pump with reciprocated and rotated piston
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United States of America Patent
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Feb 15, 2011
Grant Date -
Feb 26, 2009
app pub date -
Aug 12, 2005
filing date -
Nov 29, 2004
priority date (Note) -
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Abstract
A volumetric pump (1) comprising a piston (2) and a cylindrical chamber (3), contains an inlet port (10) and an outlet port (11). The piston (2) is actuated by a rotor (5) bearing an eccentric shaft (6). The shaft (6), being connected to the piston (2), causes the piston to slide back and forth inside the cylinder chamber (3) while having a bidirectional angular movement. The instroke of the piston (2) sucks a fluid (15) from the inlet port (10) through a first channel (12) into the pump chamber (3), the fluid being propelled through a second channel (13) to the outlet port (11) during the outstroke of the piston (2). The inlet (10) and outlet port (11) are opened and closed alternatively by the bidirectional angular movement of the piston (2) which acts as a valve for the inlet and outlet ports (10, 11).
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