Piston type metering pump

Details Piston type metering pump Piston type metering pump

1990-11-14

1992-02-18

Smith, Leonard E.

Pumps

Motor driven

Electric or magnetic motor

1375124, 137852, 417454, 417571, F04B 3504, F04B 3910

Patent

active

050889028

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.

REFERENCES:
patent: 2260180 (1941-10-01), Herder
patent: 3131646 (1964-05-01), Parrott
patent: 3416557 (1968-12-01), Schoenecker et al.
patent: 3664774 (1972-05-01), Tupper et al.
patent: 3730217 (1973-05-01), Gute
patent: 4422831 (1983-12-01), Schmid
patent: 4614479 (1986-09-01), Liu
patent: 4710109 (1987-12-01), Ballu

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