Microencapsulated cholesteric liquid crystal temperature measuring device for determining the temperature of non-planar or planar surfaces
US4433637A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1981 |
| Grant date | Feb 28, 1984 |
| Priority date | — |
| Expiry date | Jun 10, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249997
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature measuring device engageable with a surface of any contour to determine the individual temperature of each of the several portions of the surface by providing a thermal map. The map is observable and may be photographed if a record thereof is desired. The temperature measuring device has a portion engageable with the surface and conformable to the surface. The portion which engages the surface includes a coating of cholesteric material, such as microencapsulated liquid crystal material which is temperature-sensitive and light-reflecting. The device also includes a transparent fill material therewithin to transmit the thermal image or map therethrough. Thus, a thermal map or image of the surface is provided. The thermal map is observable and/or recordable through another portion of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.