Internal temperature indicator
US9279732B2 · kind B2 · utility
Inventor
Key dates
| Filing date | May 31, 2012 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | Nov 15, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature indicator having a tubular structure; a float or floating particles releasably held in place in the tubular structure by a temperature dependent material that is activated at or about a critical temperature, the float or floating particles having a first density; and a fluid within the tubular structure, the fluid having a second density that is less than the first density. When the temperature indicator is heated to the critical temperature, the temperature dependent material activates and releases the float or the floating particles, which rise in the fluid so as to be visible as in indicator that the critical temperature has been reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.