Tamper-evident cap
US6644491B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2001 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Feb 12, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S220/915
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A tamper-resistant closure includes a cap provided with several cap retainers adapted to engage an annular ridge surrounding a discharge valve mounted on a can and a removable tamper band coupled to a lower edge of the cap to define an undulated frangible tear line between the cap and the tamper band. Several band retainers are provided on the tamper band and adapted to engage the annular ridge. The band retainers cooperate with the cap retainers to help retain the closure on the can while the tamper band remains coupled to the cap. Once the tamper band is removed, the cap retainers engage the annular ridge on the can and cooperate to retain the remaining cap on the can.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.