Combination of a container and a closure
US4592476A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 1985 |
| Grant date | Jun 3, 1986 |
| Priority date | — |
| Expiry date | Mar 22, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D41/3409
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A container and closure maintain pilferproof characteristics without impairment. The container has a mouth-neck portion having an external thread and an annular anchoring flange located beneath the external thread. The closure is comprised of a cylindrical skirt wall having a circumferentially extending breakable line to divide the skirt wall into a main portion above the breakable line and a pilferproof skirt portion below it. The inner surface of the pilferproof skirt portion has a plurality of circumferentially spaced anchoring flaps extending radially inwardly. A projecting flange projects radially outwardly below the annular anchoring flange. When the closure has been fully mounted on the mouth-neck portion, the lower end of the pilferproof skirt portion contacts or approaches the upper surface of the projecting flange. Furthermore, a plurality of protrusions are spaced circumferentially below the annular anchoring flange on the peripheral surface of the mouth-neck portion. When the closure has been fully mounted on the mouth-neck portion, forward ends of the protrusions contact or approach the inner surface of the pilferproof skirt portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.