Dispensing – With lock or fastening seal – Plural
Patent
1979-11-01
1982-02-09
Tollberg, Stanley H.
Dispensing
With lock or fastening seal
Plural
222525, B67D 532
Patent
active
043146562
ABSTRACT:
A childproof, push-pull container closure includes a body portion having an opening through which container contents may be discharged. A cap is secured to the body portion and is adapted for movement axially of the body portion. The cap is mounted to the body portion by means of a formation extending from the upper surface of the body portion. In one embodiment, the formation defines recesses spaced 180.degree. from each other and located near the periphery of the body portion. The cap includes a top wall having a depending skirt along the lower edge of which an annular, radially inwardly directed flange is included. When the cap is in a closed position, the recesses and the annular flange are engaged in interlocking relationship. In order to unlock the cap, the skirt is distorted by applying force to the skirt at appropriate opposed circumferential locations until the annular flange is moved from the recesses. Certain embodiments of the invention include an upstanding portion projecting from the midpoint of the ledge; an inner skirt depends from the top wall and snugly engages the upstanding portion. This construction permits movement of the cap to be constrained. In all embodiments of the invention, the cap includes a seal engageable with a sealing surface included as part of the body portion.
REFERENCES:
patent: 2998902 (1961-09-01), Thomas et al.
patent: 3297212 (1967-01-01), Neuner
patent: 3426949 (1969-02-01), James
patent: 3964634 (1976-06-01), Jasinski et al.
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