Compact collapsible lunch box
US5181612A · kind A · utility
Inventor
Key dates
| Filing date | Oct 25, 1991 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Oct 25, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2331/804
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
This compact lunch box consists of a collapsible carrier body and a collapsible lower casing both having walls made of a thermal insulative material. In the erected state, the lower casing may be removably mounted with a plurality of mounting webs at the bottom side of the carrier body for containing food and beverage. A thermal pack is provided in a well located within the carrier body for maintaining the food and beverage in a low healthy temperature. In the collapsed state, the lower casing can also be conveniently mounted at the bottom of the carrier body to form a compact assembly which can be stored in a briefcase or a school bag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.