Closure having well with removable membrane
US6568563B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2001 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Aug 14, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D47/103
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A closure for a container neck having a crown, a reduced diameter portion, a downward facing shoulder, and an enlarged diameter portion. The crown defines an opening and an outwardly extending locking bead. The closure includes a cap, a skirt, a well, a frangible membrane, a pull ring, and a retainer. The skirt depends from the top and is adapted to fit around the crown and the enlarged diameter portion of the container neck. The well includes an upper side wall depending from the top, an inwardly directed shoulder located adjacent a bottom of the upper wall, and a lower side wall depending from the inwardly directed shoulder. The lower side wall has an interior surface and the lower side wall terminating at an open bottom. The frangible membrane in the well closes off the well and includes a line of weakness frangibly connecting the frangible membrane to the lower side wall adjacent the inwardly directed shoulder. The pull ring is attached to an upper surface of the frangible membrane. The pull ring is positioned within a recess and substantially below the top. The retainer structure is adapted to engage the downward facing shoulder of the container neck. The retainer structure in…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.