Child-resistant threaded closure
US6168035A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 4, 1999 |
| Grant date | Jan 2, 2001 |
| Priority date | — |
| Expiry date | May 4, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D50/046
- WIPO fieldHandling
- WIPO sectorMechanical engineering
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 …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.