Screw cap for canisters

Details Screw cap for canisters Screw cap for canisters

1990-01-12

1992-03-24

Shaver, Kevin P.

Dispensing

With plural openings or discharge guides

Having flow controllers or closures

222478, 222568, B67D 300

Patent

active

050979922

ABSTRACT:
A screw for a plastic canister cap has a through airhole that opens into an annular channel in the base of the cap. The end positions of an external thread on the pouring nozzle and an internal thread on an annular wall of the screw cap are matched to one another and at least two through airholes are provided in the annular channel so that one of the airholes is always at least in the vicinity of the through hole of the pouring nozzle.

REFERENCES:
patent: 3149758 (1964-09-01), Bush et al.
patent: 3399811 (1968-09-01), Miller
patent: 3536107 (1970-10-01), Schreiber
patent: 4928861 (1990-05-01), Schiemann

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