Twist top child-resistant closure

Bottles and jars – Closures – Having warning means or means impeding closure removal

Patent

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Details

215206, 215224, B65D 5502

Patent

active

058296093

ABSTRACT:
A child-resistant closure for a container having a neck and a mouth covered by a flexible cap of inverted cup shape. The container neck includes an outwardly projecting, ramped rib having a lower ramp end. The cap has at least one projection extending inwardly from a sidewall, with the projection being normally positioned radially spaced outside of the ramped rib, but being manually movable inwardly with the side wall to engage the ramped rib near the lower end in a predetermined rotational position of the cap. A detent member hold the cap in a position closing the container mouth but permitting cap rotation. The sidewall may be squeezed to engage the projection and ramped rib, and rotated in one direction, with the ramped rib raising the projection, to force the cap upwardly to open the container by disengaging the detent member from its cap-holding position.

REFERENCES:
patent: 3376991 (1968-04-01), Deaver
patent: 3675804 (1972-07-01), Micalief
patent: 3695475 (1972-10-01), Ruekberg
patent: 3794200 (1974-02-01), Marks
patent: 3923181 (1975-12-01), Libit
patent: 3955696 (1976-05-01), Finke
patent: 3984021 (1976-10-01), Uhlig
patent: 4134513 (1979-01-01), Mumford
patent: 4270664 (1981-06-01), Buono
patent: 4298129 (1981-11-01), Stull
patent: 4335823 (1982-06-01), Montgomery et al.

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