Multi-mode differential fluid displacement pump

Details Multi-mode differential fluid displacement pump Multi-mode differential fluid displacement pump

1988-06-29

1990-07-17

Smith, Leonard E.

Pumps

Motor driven

Electric or magnetic motor

417488, F04B 1300

Patent

active

049418084

ABSTRACT:
A multi-mode, differential fluid displacement pump provides for at least two different measured doses. The pump has a chamber in which are mounted a first diameter piston and a second diameter piston defining first and second volumes for reciprocation in the chamber. Means are provided for reciprocating the pistons as desired to obtain predetermined volume changes corresponding to movement of either or both of the first and second pistons. A system of operation and a mixing chamber useful in connection with dosages from the pump are interconnected with the pump.

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