Container including inner closure with opening permitting free liquid flow
US4655355A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 1984 |
| Grant date | Apr 7, 1987 |
| Priority date | — |
| Expiry date | Dec 24, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S215/902
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A container (10) having a line of weakness (18) at which the container is opened includes an inner closure (20) mounted within the container cover (16) above the line of weakness (18), and an annular sidewall (22) depending below the frangible line of weakness (18). The inner closure (22) protects the line of weakness (18) from the liquid contents, thereby preventing spillage of liquid contents onto outer non-sterile surfaces upon opening of the container. The container prevents the commercially undesireable retention of moisture in the volume (40) defined by the cover (16) and the inner closure (20). The container may be integrity tested using standard testing procedures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.