Tamper proof closure
US4362253A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1981 |
| Grant date | Dec 7, 1982 |
| Priority date | — |
| Expiry date | Nov 30, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D41/48
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A re-closable tamper-proof closure assembly for containers comprises a cap with a tamper-proof strip attached to the skirt of the cap by a breakable web but the strip is free of any tabs graspable by the user's hand, and is broken away from the cap simply by the act of removing the cap by pushing upwards on a stout lug. There may be a gap in the web already in the region of the lug, and at the opposite side of the cap the skirt is extended downwards to form a tongue between the ends of the strip. There can be a bead on the container neck for snap engagement of the cap on re-use, in addition to the bead engaged by the tamper-proof strip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.