Drop volume dispensing closure

Details Drop volume dispensing closure Drop volume dispensing closure

1990-08-14

1992-06-09

Huppert, Michael S.

Dispensing

Drop formers

222479, B65D 4718

Patent

active

051199750

ABSTRACT:
A droplet dispensing closure for connection to a bottle opening. The dispensing closure comprises a cup-shaped body having outer circumferential holding ring and seals for retention and sealing engagement with the opening. A drop dispensing tube extends from a bottom wall of the body and has an outlet disposed above an outer rim of the cup-shaped body. A dispensing hole is provided in registry with the tube for admitting liquid into the tube. An air vent tube, of predetermined length, extends under the bottom wall to one side of the dispensing hole. The air vent tube has a constant diameter passage to admit outside air into the air vent tube. The dispensing tube has a constant inner diameter dispensing section. The air vent tube admits air into the bottle at an equal volume as liquid is forced through the dispensing hole when the bottle is inverted at a position past horizontal. The drip rate is slow enough to permit the counting of drops being dispensed.

REFERENCES:
patent: 2173662 (1939-09-01), Plattring et al.
patent: 2188802 (1940-01-01), Beckett
patent: 2783923 (1957-03-01), Croce
patent: 3117701 (1964-01-01), Stull
patent: 4880146 (1989-11-01), Hudgins

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