Plastic-canister screw closure

Details Plastic-canister screw closure Plastic-canister screw closure

1989-01-06

1990-05-29

Rolla, Joseph J.

Dispensing

With plural openings or discharge guides

Having flow controllers or closures

222189, 222568, B67D 300

Patent

active

049288610

ABSTRACT:
At the place where the venting through hole of canisters with an external screw thread opens out at the pouring nozzle, a screw-on cover has an annular groove which is liquid-tight with respect to the liquid flowing out from the pouring nozzle. The annular groove in turn communicates by a through air hole with the outside air, so that air can flow into the canister to compensate for the liquid flowing out. Larger canisters in particular can be poured out quickly and without glugging.

REFERENCES:
patent: 2835411 (1958-05-01), Scheminger, Jr.
patent: 3149758 (1964-09-01), Bush et al.
patent: 3399811 (1968-09-01), Miller
patent: 3622049 (1971-11-01), Thompson
patent: 4585150 (1986-04-01), Beacham et al.
patent: 4699300 (1987-10-01), Blake

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