Stopper for closing neck of container
US10369729B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2014 |
| Grant date | Aug 6, 2019 |
| Priority date | — |
| Expiry date | Sep 23, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/565
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for manufacturing a stopper for closing a neck of a container comprises a first step of molding the stopper in one piece. The stopper includes a sealing membrane provided with a central opening, a tubular stem centered on an axis and extending from the sealing membrane around the central opening, and a capsule connected, by a tear wall, to a free end of the stem. The capsule is configured to be wedged in the stem to seal the neck of the container. The method comprises a second step in which, while the tear wall is intact, a force, in line with the axis, is applied to the stopper so as to break the tear wall and move the capsule inside the stem until the capsule is wedged in the stem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.