Dosing pump
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United States of America Patent
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Oct 26, 1999
Grant Date -
N/A
app pub date -
Jan 13, 1998
filing date -
Jul 13, 1995
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A diaphragm dosing pump (1) has a rotary driving motor (3) electrically connected to control electronics (4). The motor is controlled in such a way that at the beginning and end of each dosing operation the driven diaphragm preferably always takes the same starting position, in particular a bottom dead center position. In order to achieve a reliable sealing behavior of the inlet and outlet valves even during slow working strokes and when the pressure difference between suction and compression sides is small, the valves are designed with elastic valve disks mounted without stress between their valve seat and an opposite rib-like stop.
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