Metering pump

Details Metering pump Metering pump

1986-08-18

1987-12-29

Freeh, William L.

Pumps

Condition responsive variable volumetric capacity expansible...

417568, F04B 500, F04B 4900

Patent

active

047157917

ABSTRACT:
An arrangement for the volume-controlled feed of a medium, e.g. a liquid, in an outer flow system, comprising a movable pump piston (10) and a metering chamber (20) in connection, or connectable, to the flow system via a valve-controlled inlet (22) and outlet (23) for the intake and discharge respectively of the medium in time with the working cycles of the pump piston (10). To make possible the change between different desired feed volumes of the medium the arrangement has a wall element (15) delimiting the volume of the metering chamber (20) which is movable inside the metering chamber (20) for the adjustment of the desired metering chamber volume.

REFERENCES:
patent: 957451 (1910-05-01), Willet
patent: 1656911 (1928-01-01), Eisenhauer
patent: 2619907 (1952-12-01), Paterson
patent: 2916998 (1959-12-01), Miller
patent: 3461805 (1969-08-01), Karkow
patent: 3938425 (1976-02-01), Kroffke
patent: 4568249 (1986-02-01), Todd

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