Stopper with an obstuctor for a can and method for the production of said stopper
US8016143B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2003 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Nov 1, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/565
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a stopper, provided with an obstructor (1), for a can. Said stopper comprises a cap (3) provided with a central opening (5) and an annular skirt (7), and an annular shaft (17) extending around the opening, in addition to a capsule (19) which is detachably fixed, by means of a tear element (23), to a free edge (25) of the shaft opposite the opening. The tear element joining the shaft to the capsule is placed in an entrance area at an angle in the free edge of the shaft. At least one sealing lip (37) is disposed on the inner surface of the shaft, and the cap, skirt and capsule of the stopper are molded in a single piece without any welding or the addition of another component or detachable part. The invention also relates to a method for the production of said stopper by offset injection in a region which is outside the cap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.