Tamper-evident closure with reinforced band
US5271512A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 6, 1992 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Nov 6, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D41/3447
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A molded tamper-evident closure for use with a container having a neck. The closure includes a generally planar top portion with an outer peripheral edge, an annular skirt depending from the peripheral edge and having a lower edge margin, an annular breakaway band having a top surface and a bottom surface, the top surface including a plurality of spaced frangible bridge formations integrally joined to the lower edge margin of the skirt. An outer surface of the breakaway band is provided with a plurality of support formations such as gusset members for preventing distortion of the breakaway band as the closure is applied to the container. The closure may also be provided with a plurality of specially configured recess formations for engaging ratchet formations on the neck of the container to provide an anti-backoff feature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.