Sealable food container with improved lidding and stacking features
US7258905B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2002 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Feb 8, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1386
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sealable food container includes a base serving member such as a plate having a generally planar central portion, a sidewall extending generally upwardly and outwardly therefrom and a base outer flange portion extending outwardly from the sidewall. The sidewall defines a sealing area with an undercut annular sealing surface disposed between the substantially planar central portion of the base serving member and the base outer flange portion. The sidewall portion of the plate defines a base stop ridge adjacent the upper edge of the undercut annular sealing surface of the sidewall as well as a laterally extending retaining shelf adjacent the lower edge of the undercut annular sealing surface of the base serving member. A matching sealing lid is typically provided with a dome, a flexible sidewall and an annular sealing portion configured to cooperate with the base stop ridge and the sealing surface of the serving member sidewall of the base serves to position the sidewall engaging cover during sealing of the container. In a preferred embodiment, the sidewall of the lid has upwardly projecting flutes and the base has an outer recess at the lower portion of its sidewall configured to …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.