Dispensing – With discharge assistant – Container with follower
Patent
1977-05-16
1979-03-06
Spar, Robert J.
Dispensing
With discharge assistant
Container with follower
215309, 222479, B65D 5116
Patent
active
041426576
ABSTRACT:
A dispensing closure for liquid containing containers which have different neck diameters includes a cap having an annular skirt which engages the interior neck of the containers. The cross section of the annular skirt is noncircular due to an indented pouring spout which extends along the skirt, and which is distortable to maintain the annular skirt in engagement with container necks of different diameters. A follower bag when collapsed is housed entirely within the protecting annular skirt, and has an opening mouth sealed to the cap and contiguous with a vent aperture through the top of the cap. The follower bag is of a size, when inflated, on the order of the interior size of the container. A plunger has an elongated neck releasably secured within the vent aperture, and an enlarged head adjacent the open end of the annular skirt. Before liquid is dispensed, the plunger is forced into the chamber to cause the follower bag to fall onto the liquid surface. As liquid is dispensed through the spout, air enters the vent aperture and continues to inflate the follower bag.
REFERENCES:
patent: 209244 (1878-10-01), Gaffron
patent: 601877 (1898-04-01), Lochmann
patent: 1695076 (1928-12-01), Zohe
patent: 1977862 (1934-10-01), Scholtes
patent: 2796205 (1957-06-01), Kuzma
patent: 3294289 (1966-12-01), Bayne et al.
patent: 3343701 (1967-09-01), Mahoney
patent: 3506167 (1970-04-01), Orr
patent: 3584770 (1971-06-01), Taylor
Bartuska Francis J.
Spar Robert J.
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