Pail closure with spout and improved seal

Details Pail closure with spout and improved seal Pail closure with spout and improved seal

1992-10-19

1993-06-22

Huson, Gregory L.

Dispensing

Movable material discharge guide

Foldable, bendable, collapsible or flexible

285 21, 285201, F16L 500

Patent

active

052210286

ABSTRACT:
A two piece plastic nozzle and overlying screw cap closure assembly in combination with a plastic pail cover wherein the nozzle has a cylindrical body portion which is inserted into a cover opening to form a friction fit therewith. The overlying screw cap is then rigidly supported as a sonic welding horn is brought into axial engagement with the protruding nozzle body portion. Energization of the sonic welding horn causes the nozzle body portion to soften and deform radially outwardly into a circumferentially enlarged rivet connection. Continued axial displacement of the sonic welding horn creates a plastic bond about the periphery of the rivet connection so as to close off any leakage path therearound. At the same time any radial dispersion of plastic material resulting from the bonding process is locally contained about the rivet connection periphery.

REFERENCES:
patent: 2464541 (1949-03-01), Young
patent: 3353849 (1967-11-01), Laurizio
patent: 3873132 (1975-03-01), Czerwiak
patent: 4129236 (1978-12-01), Wrycraft et al.
patent: 4231488 (1980-11-01), Ward et al.
patent: 4632282 (1986-12-01), Nagashima

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