Tamper evident plastic closure
US4579241A · kind A · utility
28Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1984 |
| Grant date | Apr 1, 1986 |
| Priority date | — |
| Expiry date | Nov 29, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D41/3447
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A molded plastic closure cap has a lower skirt portion which is defined by a 360.degree. serpentine cut and which is forced downwardly and clear of the closure during cap removal or loosening for clearly indicating that the package has been opened or tampered with.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.