Food storage containers
US7131550B2 · kind B2 · utility
54Cited by
24References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2004 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Jul 19, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D81/2038
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A lid for a food storage container includes a lid body with a vacuum sense opening and a vent opening extending through the lid body, a releasable cover disposed over the vent opening, and a pressure-indicating protrusion. The cover impedes air flow into the container through the vent opening until the cover is released. The pressure-indicating protrusion, which has a cavity in it, is in hydraulic communication with the container through the vacuum sense opening. The pressure-indicating protrusion contracts toward the vacuum sense opening in response to negative container pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.