Closure for use in hotfill and pasteurization applications
US8991643B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2011 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Nov 22, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D79/0087
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A closure for a container comprising: a cap member having a top surface, a bottom surface, and a wall portion having an outer surface and an inner surface wherein the inner surface comprises threads to mate with a threaded neck finish of a container; and a composite disc member comprising: an outer vent ring portion comprising a plurality of vents wherein the vents provide a path for air to travel from an area near the threads to an area between the bottom surface of the cap member and the composite disc member, wherein the vent ring portion functions to seal liquid in the container thus preventing the liquid from traveling to the threaded neck finish of the container; and an inner flexible diaphragm portion in a first position, wherein the flexible diaphragm portion flexes to compensate for a change in pressure within the container by transitioning downwards in response to a decrease in pressure and/or by transitioning upwards in response to an increase in pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.