Screw stopper for synthetic plastics material cans

Details Screw stopper for synthetic plastics material cans Screw stopper for synthetic plastics material cans

1987-02-24

1988-03-15

Hall, George T.

Receptacles

Closures

Removable closure guided in rotary movement

220264, 220263, B65D 4104

Patent

active

047307471

ABSTRACT:
A screw stopper for synthetic plastic cans in the range of 10 litres and above has a pouring spout with an external threading, a cap with an internal threading fitting the external threading on the pouring spout, and a connection device between the pouring spout and the cap. The external and internal threadings have an equal pitch, that is high enough that rotation of the cap through 180 degrees plus/minus 30 degrees rotates the cap from a closed to an open position. An articulated handle on the upper side of the cap protrudes far beyond the cap. The connection device includes a retaining ring that guides the cap in a shape-engaging manner and a guide device that is rigidly connected with the pouring spout and guides the retaining ring and has a partial region arranged as an arrestor for the handle grip in the closed position of the cap.

REFERENCES:
patent: 4099642 (1978-07-01), Nergard
patent: 4624385 (1986-11-01), Yano

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