Closure cap of plastic material
US4664279A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1985 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Oct 3, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2401/35
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The tear-off guarantee strip (6) of the closure cap (1) has a peripheral detent edge portion (9) whose inside diameter is smaller than the outside diameter of a peripheral projection (8) on the mouth (3) of a container. In addition to the detent edge portion (9), provided on the inside (7) of the guarantee strip are at least one holding projection (10) and a bead (26), which both strengthen the effect of the detent edge portion (9). The combination of detent edge portion, holding projections and bead gives optimum results in regard to the function of the guarantee strip and the possibility of removing the closure cap from molding tools which open in an axial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.