Device to display skin temperature changes by changes in color
US3951133A · kind A · utility
46Cited by
7References
1Claims
0Family size
Inventor
Key dates
| Filing date | Sep 12, 1974 |
| Grant date | Apr 20, 1976 |
| Priority date | — |
| Expiry date | Sep 12, 1994 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/6838
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Two or more sheets of liquid crystal thermal film assembled side by side, one surface of which assembly is covered by a flat piece of temperature equalizing material made of high thermal conductivity material, such as tin-foil, which film sheets change color in response to changes in the skin temperature of a person on whom my device is attached. At opposite sides of the sheets are two retaining strips of material to wrap around a finger, that can be fastened together or unfastened as desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.