Hot-food transporting box
US4009821A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1976 |
| Grant date | Mar 1, 1977 |
| Priority date | — |
| Expiry date | Feb 25, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S229/906
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A hot-food transporting box made of a semi-rigid material having top, back, bottom, and side panels attached to each other by fold line segments. The box also includes a multi-lamina front panel, which panel includes a first lamina extending downwardly from and attached to the top panel and a second lamina extending upwardly and attached to the bottom panel. When the box is erected, one of the front laminas is outside of, overlying, and releasably engaging the other lamina and the inside front lamina contacts the bottom or top panel to which the outside front lamina is attached, thereby retarding the sagging of the top panel of the box due to heat and moisture generated from the hot food contained therein. The inside front lamina is attached by a fold line segment to the front edge of one of the bottom and top panels. Portions of the inside front lamina and the front edge define two openings therebetween, each opening being in substantial alignment with the fold line segment and adjacent and generally perpendicular to a side panel of the box. The outside front lamina is attached by a fold line segment to the front edge of the other of the bottom and top panels and includes two tabs…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.