Plastic closure with rotation-inhibiting projections
US6123212A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1999 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | Aug 27, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D41/3423
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A closure for a container having carbonated or otherwise pressurized contents includes a top wall portion, and an annular depending skirt portion. An internal thread formation mates with a like thread formation of an associated container. To facilitate gas venting during closure removal, the container includes a plurality of axially extending vent grooves. Release of gas pressure during closure removal is facilitated by providing the closure with at least one, and preferably a plurality of rotation-inhibiting projections positioned adjacent to the internal thread formation. The projections interferingly engage with the vent grooves of the associated container, thus providing increasing frictional drag during closure removal to permit dissipation of gas pressure from within the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.