Container closure assembly with snap-on overcap
US6968968B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2003 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | Oct 7, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D55/08
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A container closure assembly for closing the neck opening of a container includes a closure plug for threaded engagement with the neck opening, a sealing gasket positioned between the container and the closure plug, and a unitary, molded plastic overcap constructed and arranged for assembly to the closure plug. The overcap includes a top portion defining a pair of weakened score lines that partition the top portion into three sections. A surrounding sidewall connects a pair of flange sections to first and second outer sections of the top portion. A center post axially extends from the center section and includes external threads for engagement with internal threads on the closure plug. The overcap includes a raised portion in unitary construction with the top portion and spanning the pair of weakened score lines so as to visually reveal stress discoloration upon upward movement of the first and second outer sections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.