Bottle closure
US4434904A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1982 |
| Grant date | Mar 6, 1984 |
| Priority date | — |
| Expiry date | Jun 1, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D55/02
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A plastic container and a three-piece closure system therefor are disclosed. The container has a threaded neck defining a dispensing outlet. A separate closure covers the dispensing outlet and is heat-sealed to the threaded neck, forming a frangible section which may be broken to remove the closure. An internally threaded jacking ring is threadedly received on the neck, and includes a plurality of inwardly directed flexible fingers, which snap into an annular groove in the closure when the jacking ring is threaded onto the neck. To break the frangible portion and open the container, the jacking ring is rotated in the direction to remove it, so that the jacking ring fingers press against the top edge of the recess in the closure and actually pry the closure away from the container neck.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.