Pump for variable dosing

Details Pump for variable dosing Pump for variable dosing

1977-05-23

1978-10-03

Croyle, Carlton R.

Pumps

Successive stages

Reciprocating rigid stages

92 605, 417545, 417555R, F04B 2102, F04B 2108

Patent

active

041181522

ABSTRACT:
A variable dosing piston pump having a cylinder made of two parts, the fixed part through which the piston rod extends and a part adapted to be inserted more or less within said fixed part and means to fix said parts relative to each other, an outlet in said fixed part for the dosed liquid, an inlet controlled by a non-return valve in said movable part, the piston having a diameter adapted to that of the movable part and comprising a non-return valve. By changing the positions of the two cylinder parts relative each other, and retaining the same piston movement, the effective stroke of the piston is changed, thereby changing the dosing.

REFERENCES:
patent: 851262 (1907-04-01), Tatum
patent: 1180857 (1916-04-01), Lefever
patent: 1511971 (1924-10-01), Hunter

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