Child-resistant closure, package and method of making

A closure of one-piece integrally molded plastic construction that includes a base wall with a peripheral skirt, internal lugs on said skirt, an annular wall extending from said base wall within said skirt and a circumferentially continuous external pocket on said annular wall adjacent to said base wall, at least a portion of said skirt on which said internal lugs are disposed being frangibly separable from said closure.

A package having child-resistant and non-child-resistant modes of operation, which includes:

• a container having an open end and at least one external engagement element spaced from said open end, and
• a closure having a base wall, a skirt extending from said base wall, at least one internal engagement element on said skirt for engagement with said at least one external engagement element on said container in a child-resistant mode of operation, at least a portion of said skirt containing said internal engagement element being severable from said closure for non-child-resistant operation of said closure, an annular wall extending from said base wall within said skirt to engage said open end of said container, and an annular pocket in an external surface of said annular wall adjacent to said base wall for snap-receipt over said open end of said container in said non-child-resistant mode of operation.

A package that includes:

• a container having an open end and an array of external projections around said open end, and
• a closure that includes a skirt and internal lugs on said skirt for engaging said projections, wherein said skirt has an undulating circumferential contour that includes alternate outwardly convex and outwardly concave portions, and wherein said internal lugs are disposed within said outwardly concave portions.

A method of making a closure that includes molding a closure of one-piece integrally molded plastic construction having a skirt and internal lugs on said skirt, said skirt having an undulating circumferential contour that includes alternate outwardly convex and outwardly concave portions, said internal lugs being disposed within said outwardly concave portions.

A method of making a closure that includes molding a closure of one-piece integrally molded plastic construction having a base wall with a peripheral skirt, internal lugs on said skirt, an annular wall extending from said base wall within said skirt and a circumferentially continuous external pocket on said annular wall adjacent to said base wall, at least a portion of said skirt on which said internal lugs are disposed being frangibly separable from said closure.