Thermal measuring and testing – Temperature measurement – Nonelectrical – nonmagnetic – or nonmechanical temperature...
Patent
1988-01-05
1989-09-05
Yasich, Daniel M.
Thermal measuring and testing
Temperature measurement
Nonelectrical, nonmagnetic, or nonmechanical temperature...
250372, G01J 150
Patent
active
048632821
ABSTRACT:
A sun heat radiation sensor is provided having a plurality of display areas each of which comprises a different, heat activatable liquid crystal composition. The liquid crystal compositions are selected so that the display areas provide a quantitative visual indication of the sun heat radiation sensed by the sensor. The sensor may be applied to a container for sun-screening substances, e.g. typically to a lid of the container.
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Liquid Crystal Devices Limited
Striker Michael J.
Yasich Daniel M.
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