Control sample of a deep-frozen product or a product, whose keeping temperature must be checked
US5301632A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jan 13, 1993 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Jan 13, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A check sample of a deep-frozen product or a product is provided, whose keeping, conserving or preserving temperature, which is below ambient temperature, must be controlled or checked. The sample includes a case or envelope, which is sealed in an inviolable manner and, in the case or envelope, a meltable object having a predetermined shape different from the internal shape of the case. This object has a melting point below or equal to the thawing or keeping temperature of the product and the initial shape of the object is impossible to reconstitute following thawing or reheating, even of a partial nature, of the product. According to the invention, the case comprises a first part made invisible and integral with the product or a pack containing the latter by insertion into the pack or the case a second part, which is visible and integral with the first part. The object has a first portion at least partly filling the first invisible part of the case and a second portion having a shape which is at least partly different from the internal shape of the second visible part of the case. This second portion of the object has at least one transparent window for rendering the object visibl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.