Piston type metering pump
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United States of America Patent
Stats
-
Feb 18, 1992
Grant Date -
N/A
app pub date -
Nov 14, 1990
filing date -
Nov 17, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The piston type metering pump includes a synchronous electric motor, for example of the permanent-magnet type, which transmits its rotary motion to a speed reducer which is in turn associated, by means of a connecting rod-crank kinematic system, to a piston which is slidable in a hollow body in which it defines a variable-volume chamber. The chamber has, at its top, openings on which fluid intake and discharge valve means act.
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