Tamper-evident closure for dispensers
US4792054A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 13, 1987 |
| Grant date | Dec 20, 1988 |
| Priority date | — |
| Expiry date | Aug 13, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D47/265
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A tamper-evident dispenser end closure including an imperforate hermetically sealed base and a rotor pivotally connected to the base by a snap-fit between a female pocket formed in the base and an annular male protrusion formed in the rotor. The protrusion contains an opening for visual detection of tampering with the pocket of the base. The base and rotor are retained in a close superposed relationship by the snap-fit pocket and protrusion. Frangible means are provided which tear or break when an attempt is made to separate the base from the rotor thereby evidencing tampering with the rotor. The base and rotor have webs provided with means defining respective dispensing apertures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.