Compact tubular temperature measuring device
US3955420A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 12, 1974 |
| Grant date | May 11, 1976 |
| Priority date | — |
| Expiry date | Aug 12, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S252/962
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rapid and convenient temperature indicator is provided having a tubular heat-conducting member joined at one end to a heat sink and having the other end rounded for ease of contact with the surface whose temperature is to be measured. Conveniently, a cylindrical protective cover is provided which is slidably mounted on the heat sink by means of a slot relieved threaded member and nut. The heat-conducting tube has a darkened surface which is coated with a liquid crystal composition having a mesophase temperature range which provides a temperature response in the range of interest. One or more liquid crystal compositions may be employed providing bands along the tube. A reticule is provided, which can be calibrated to give an accurate approximation of the temperature of the surface being measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.