Tamper evident closure with hook-like locking tabs
US4856665A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1988 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Dec 15, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D41/3428
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A tamper evident closure has frangible bridges detachably connecting a tamper indicating band to the skirt of a cap, and hook-like locking tabs for securing the tamper indicating band to a transfer bead on a container, circumferentially displaced from one another and all aligned with a radially extending annular gap between the tamper indicating band and the cap, such that the closure can be integrally molded from thermoplastic material in a straight draw mold without slides, inserts or post molding operations. The frangible bridges extend along, as well as across, the annular gap and are flexible so that the tamper indicating band can be extended axially relative to the cap to accommodate for variations in dimensions and tolerances in containers to which the closure is applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.