Metering pump with an electric motor

Details Metering pump with an electric motor Metering pump with an electric motor

2005-09-27

2005-09-27

Thorpe, Timothy S. (Department: 3746)

Pumps

Condition responsive control of pump drive motor

By control of electric or magnetic drive motor

C417S044100, C417S300000, C417S413100, C417S278000

Reexamination Certificate

active

06948914

ABSTRACT:
The metering pump comprises a synchronous motor which is stepped down via a mechanical gear and the rotation movement of the motor is converted into a stroke movement which drives the membrane pump. To the motor there is allocated an electronic control which may be activated by external impulses with regard to the delivery quantity. At the same time the control operates such that one always passes through a complete operating cycle of the pump if the nominal delivery quantity resulting on account of the received impulses is as large or larger than the quantity which the pump delivers in an operating cycle.

REFERENCES:
patent: 4389163 (1983-06-01), Magnussen, Jr. et al.
patent: 4482346 (1984-11-01), Reinicke
patent: 4624625 (1986-11-01), Schrenker
patent: 5423661 (1995-06-01), Gabeler et al.
patent: 5707212 (1998-01-01), Matthews
patent: 6095757 (2000-08-01), Frezza
patent: 2219042 (1973-10-01), None
patent: 19623537 (1997-12-01), None

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