Method for dispensing a preselected amount of liquid

Details Method for dispensing a preselected amount of liquid Method for dispensing a preselected amount of liquid

1978-07-19

1983-11-08

Skaggs, H. Grant

Dispensing

Processes of dispensing

222214, 222420, F04B 4312

Patent

active

044137516

ABSTRACT:
A method for very accurately dispensing a preselected amount of liquid in a drop-by-drop fashion. The liquid is peristaltically pumped intermittently from a reservoir to a discharge pipe by the successive squeezing and releasing of an elastic tube carrying the liquid and connected to the discharge pipe. The discharge pipe has a discharge port with a face, the face being perpendicular to the longitudinal axis of the discharge pipe. The outer diameter of the discharge pipe at the discharge port is less than or equal to twice the inner diameter of the discharge pipe at the discharge port. The preselected amount of the liquid that is dispensed in a drop-by-drop fashion from the discharge port satisfies the following conditions:

REFERENCES:
patent: 3327898 (1963-06-01), Farr
patent: 3384080 (1968-05-01), Muller
patent: 3826137 (1974-07-01), Clarke
patent: 3877609 (1975-04-01), Cullis
patent: 3990444 (1976-11-01), Vial

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