Apparatus for dispensing a preselected amount of liquid

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

1982-02-24

1984-05-08

Skaggs, H. Grant

Dispensing

Resilient wall

Wall deflecting means

222420, B65D 3700

Patent

active

044469934

ABSTRACT:
Apparatus 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: 2393838 (1946-01-01), Tarbox
patent: 3327898 (1967-06-01), Farr
patent: 3737251 (1973-06-01), Berman et al.
patent: 3826137 (1974-07-01), Clarke
patent: 3877609 (1975-04-01), Cullis
patent: 3990444 (1976-11-01), Vail

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