Tethered plastic screw stopper
US11401078B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 2019 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Nov 4, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2401/40
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The present invention relates to tethered plastic stopper having a closure shell, a tamper band, and an annular ring. The annular ring is formed between a bottom weakness line separably linked through bottom bridges to the top edge of the tamper band and to the bottom edge of the annular ring and a top weakness line separably linked through top bridges to the top edge of the annular ring and to the bottom edge of the closure shell. At least one of the bottom bridges is configured to prevent disconnection of the annular ring from the tamper band and at least one of the top bridges is configured to prevent disconnection of the annular ring from the closure shell. The remaining bottom bridge and the remaining top bridge having a section exceeding at least 30% relative to the section of the bottom bridges and top bridges, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.