Tamper evident plastic food container
US9796511B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2015 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Jun 30, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2543/00833
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A tamper evident container comprises a lid and a base. The lid includes a lid rim having a lid rim flange. The base includes a base rim having a base rim flange. A frangible hinge is formed between a top pinch segment peripherally projecting from the lid rim flange and a bottom pinch segment peripherally projecting from the base rim flange. The frangible hinge is configured to rupture when the container is in the initially sealed arrangement by the application of a pinching force to the top pinch segment and bottom pinch segment that results in the relative vertical movement of the segments toward each other. As compared to the prior art, the container hinges about a frangible vertex instead of hinging about a square-shaped structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.