Package for storing perishable products in a reduced air atmosphere
US4548824A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 1983 |
| Grant date | Oct 22, 1985 |
| Priority date | — |
| Expiry date | May 2, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D81/2038
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A package for perishable products which can readily be prepared for home freezing is comprised of a relatively rigid tray and a flexible cover, the cover having a hole covered by a removable, replaceable seal. The tray is provided with collapsible supports, which hold the cover above the perishable product on the tray during fresh storage, but which can be readily collapsed in order to provide maximum expulsion of air from the package in preparation for freezing. These supports comprise one or more relatively thin walls integral with the tray, the walls having a convoluted riged line parallel and near to the top of the walls. When there is more than one wall, these ridge lines on adjacent walls are alternately convex and concave and meet at the corner formed by adjacent walls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.