Two piece container closure assembly with frangible inner closure
US5947315A · kind A · utility
20Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1998 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Jan 27, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2543/00435
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The closure assembly includes: a container having an access opening; an inner closure with a rim attached to the container, a central portion covering the access opening, a weakened portion in the central portion, and a separably interlocking portion in the central portion, as a threaded portion; a removable closure covering the inner closure and separably interlocking the inner closure; whereby twisting the removable closure as by threading action on the inner closure breaks the inner closure at the weakened portion and opens the container. Also discloses a method for opening a closure assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.