Dispensing – Resilient wall – Wall deflecting means
Patent
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
Pilot Man-Nen-Hitsu Kabushiki Kaisha
Skaggs H. Grant
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