03935971 is referenced by 28 patents and cites 6 patents.

A double pump device for mixing with variable ratios and concentrations two or more liquids, comprising in combination: a first peristaltic pump, and a second peristaltic pump, each of said pumps acting on a plurality of collapsible tubes, said pumps being operated by two electric motors, interdependant and preferably identical to each other, driven by an electronic circuit comprising as main elements a differential amplifier and circuitry means for adjusting the input voltage of the differential amplifier and for amplifying the output signals from the differential amplifier before their application to the two driving motors.

Title
Double pump device for mixing two or more liquids with variable relative ratios and concentrations
Application Number
5/472848
Publication Number
3935971
Application Date
May 23, 1974
Publication Date
February 3, 1976
Inventor
Carlo Fragale
Cosenza
IT
Dante Guidarini
Bari
IT
Paolo Papoff
Bari
IT
Agent
Young & Thompson
Assignee
Consiglio Nazionale Delle Ricerche
IT
IPC
B67D 5/60
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