Container and closure package and method of making same
US6032829A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 1998 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | May 21, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D39/08
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A container-and-closure sealing system embodied in a container and closure package, and method of making the same. The container has an open mouth surrounded by a cylindrical neck wall having internal threads and an open upper edge. The closure is a cap/dispensing cup type and has a skirt with external threads for threaded receipt within the container neck wall. A circumferentially continuous flange projects outwardly from the skirt and has a conical portion for cam engaging, trapping and sealing with the open upper edge of the neck wall as the closure is threaded into this wall. The closure skirt also has a circumferentially continuous plug-type sealing surface that extends radially outwardly from the skirt between the trapping flange and closure external threads for interference sealing engagement with the neck wall, as the closure is threaded thereinto. The materials of the closure and container may differ in hardness relative to another so that either the plug seal rib of the juxtaposed neck wall surface deforms under closure/container engaging forces to thereby enhance the sealing capability and life. The flange has a conical skirt wall portion integrally dependent from a flan…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.