Patent Number: 6,168,035

Title: Child-resistant threaded closure

Abstract: A closure cap for use in combination with a container outlet is configured with a child-resistant feature involving a pair of abutment projections formed as part of the container outlet and a pair of abutment ribs formed as part of the closure cap. The container outlet is externally threaded and includes a dispensing opening. The container outlet also includes an annular skirt which provides a support surface for the pair of abutment projections. The closure cap is internally threaded and the pair of spaced-apart abutment ribs are designed to ride over each abutment projection during the threaded advance of the closure cap onto the container outlet. During retrograde rotation of the closure cap from the container outlet, the abutment ribs are designed to abut up against the abutment projections. The abutment ribs are manually movable in a radially inward direction for taking each abutment rib out of abutting engagement with a corresponding abutment projection. In a typical embodiment, the spacing between abutment projections is 160 degrees/200 degrees and the spacing between the pair of abutment ribs is likewise 160 degrees/200 degrees. The thread pitch and the axial height of the abutment ribs and abutment projections are constructed and arranged so as to require a two-step removal procedure. By placing the abutment ribs on spacing other than 180 degrees/180 degrees, the teeth of a young child cannot be used to defeat the child-resistant features.

Inventors: McLelland; Douglas M. (Ft. Wayne, IN)

Assignee: Rieke Corporation

International Classification: B65D 50/00 (20060101); B65D 50/04 (20060101); B65D 050/02 ()

Expiration Date: 01/02/2018