Two-flap closure

Details Two-flap closure Two-flap closure

1986-10-17

1987-09-15

Hall, George T.

Dispensing

With plural openings or discharge guides

Hand-manipulable shaker, diverse-type openings

220254, 220339, 215235, 215237, A47G 1924

Patent

active

046933999

ABSTRACT:
An injection-molded thermoplastic closure with shake-and-spoon apertures and associated flaps for selectively closing and opening the apertures. The flaps are releasably retained in their closed positions by catch elements which provide retention forces that are relatively insensitive to dimensional and shape variations in the body resulting from the molding process. In one embodiment, the cap has "freeze points" and a gate location that reduce the tendency of the cap to assume an oval condition when cooled from molding temperatures. A wide sealing ledge cooperates with a central support for a liner seal positioned in the cap to seal the mouth of a container.

REFERENCES:
patent: D278602 (1985-04-01), Rosenstein
patent: 3493150 (1970-02-01), Lucas et al.
patent: 4163496 (1979-08-01), Dogliotti
patent: 4361250 (1982-11-01), Foster
patent: 4369901 (1983-01-01), Hidding
patent: 4463869 (1984-08-01), Lewis
patent: 4494679 (1985-01-01), Cleevely
patent: 4545508 (1985-10-01), Cribb, Jr. et al.
patent: 4580687 (1986-04-01), Lewis

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