Temperature indication structure of a non-mercury non-electronic clinical thermometer
US8579505B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 2011 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Dec 13, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K13/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature indication structure for a thermometer includes a temperature indication portion made of a heat conductive layer to receive a heat flow. A structure with temperature indication markings is disposed on or above the temperature indication portion. A reversible temperature-sensitive color changing layer is formed on the temperature indication portion to overlap the structure of the temperature indication markings. The heat conductive layer is adapted to conduct the heat flow to the reversible temperature-sensitive color changing layer, producing a sensed temperature and a color changing zone of the reversible temperature-sensitive color changing layer in response to the sensed temperature thereby exhibiting a corresponding temperature value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.