Tamper evident closure with ramped contact
US5137163A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1991 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Oct 4, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D41/3447
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A tamper evident closure assembly comprising a container, a cap and a band portion. The container has a neck with threads and an annular interference ring located axially below the threads and integral with the container finish. The cap is internally threaded, having a top, a peripheral edge integral with the top and an annular skirt integrally depending from the peripheral edge. An annular tamper indicating band is detachably connected to the skirt with a plurality of spaced connectors located between the cap and the band. The band has an annular shoulder on the inside surface thereof. The annular shoulder of the band and the interference ring are configured and arranged relative to each other so that upon the application of twisting torque by the user to remove the cap from the container, the connectors are subjected to a localized vertical force, which severs the connectors sequentially and one or more at a time. After breakage of the connectors, the band remains on the neck of the container as evidence of tampering or removal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.