Child-resistant closure system

A child-resistant closure system comprising:

• a container having:
• a mouth, the mouth surrounded by a finished edge, and
• a plurality of spaced-apart projections extending outward from an outer surface of the container, each projection having:
• an interior surface defining a notch within the projection, and
• an exterior surface defining a side of a tapering passageway, the tapering passageway connecting the notch to an exterior surface of the projection;
• a closure having a top panel and a skirt depending from a periphery of the top panel,
• the top panel including a central portion, a groove disposed around the central portion, and a ridge disposed around the concave portion, the central portion having an deflection rib extending inward from an interior surface of the central portion;
• the closure skirt having:
• a first portion containing:
• a plurality of spaced-apart liner retainers extending inward from an interior surface of closure skirt, and
• a plurality of stop ribs extending inward from the interior surface of the first portion, each stop rib for communicating with a corresponding projection when the closure system is in a locked configuration;
• a second portion containing a plurality of spaced-apart lugs extending inward from the interior surface of the central portion, the lugs adapted to engage the notches in the projections on the container;
• and
• a resilient deformable liner positioned between the container and the closure having, respectively:
• an first surface contacting the deflection rib,
• a second surface contacting the finished edge of the container, and
• a peripheral edge communicating with the interior surface of the closure skirt;
• wherein the closure system adopts the locked configuration, the lugs are engaged within the notches in the projections on the container, and the liner contacts the closure primarily at the deflection rib;
• and
• wherein when the closure system adopts an unlocked configuration by a pushing movement applied to the closure so that the peripheral edge and the ridge engage the resilient deformable liner therebetween, the pushing engagement causing:
• the deflection rib to deform a central portion of the deformable liner, the peripheral edge of the resilient deformable liner to become more distant from the liner retainers, and a portion of the liner to contact the raised and depressed portions of the closure;
• and the pushing movement allowing the lugs to disengage from the notches through the tapering passageways for separating the closure from the container.

A child-resistant closure system comprising:

• a container having:
• a mouth defined by a finished edge, and
• a plurality of spaced-apart projections extending outward from an outer surface of the container, each projection defining an indentation;
• a closure having a top panel and a skirt depending from a periphery of the top panel,
• the top panel including a central portion, a concave portion disposed around the central portion, and a convex portion disposed around the concave portion, the central portion having an deflection rib extending inward from an interior surface of the central portion;
• the closure skirt having:
• a first portion communicating with the top panel, the first portion containing a plurality of spaced-apart circumferential liner retainers extending inward from an interior surface of closure skirt, and
• a second portion containing a plurality of spaced-apart circumferential lugs extending inward from the interior surface of the central portion, the lugs adapted to engage the indentations in the projections on the container;
• and
• a resilient deformable liner positioned between the container and the closure having:
• a first surface facing the top panel,
• a second surface facing the mouth of the container, and
• a peripheral edge extending past the mouth;
• wherein when the closure system is in a locked configuration, the lugs are engaged within the indentations in the projections on the container, the first surface contacts the deflection rib, and the peripheral edge no longer engages the liner retainers;
• and
• wherein the closure system transitions from the locked configuration to an unlocked configuration by moving the top panel toward finished edge for a transition distance, so that a) the deflection rib moves a central portion of the resilient deformable liner into the mouth of the container, b) the resilient deformable liner becomes more distant from the liner retainers, c) a portion of the resilient deformable liner contacts the concave and convex portions of the closure;
• and d) the lugs move from the indentations to the tapering passageways, for disengaging the closure from the container.