Ovenable carton with removable lid
US4531668A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 6, 1984 |
| Grant date | Jul 30, 1985 |
| Priority date | — |
| Expiry date | Jun 6, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2577/2091
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A tray type, ovenable carton having a cover with a removable lid portion is provided with increased strength and rigidity by locating the cut lines in the cover so as to leave substantial portions thereof attached to the tray when the lid is removed. The preferred structure comprises separate components including a leakproof tray with side walls having an integral, outwardly extending flange around the upper edges of the side walls, and a separate one piece cover. The cover is sized with overall dimensions corresponding to the tray and flange areas and is adhered to the tray flanges at its peripheral edges. The removable lid portion of the cover is formed by a pair of spaced apart, parallel cut lines of partial depth on opposite surfaces of the cover. The cut lines are both located inwardly of the flange area of the tray with selected portions arranged to be substantially parallel to the side walls of the tray and other portions arranged to extend diagonally or arcuately within the cover member between adjacent side walls of the tray. The removal of the lid portion from the cover member leaves intact substantial parts of the cover member attached to the flange area of the tray so a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.