Liquid crystal clinical thermometer

Details Liquid crystal clinical thermometer Liquid crystal clinical thermometer

1994-11-22

1997-10-14

Bennett, G. Bradley

Thermal measuring and testing

Temperature measurement

Nonelectrical, nonmagnetic, or nonmechanical temperature...

116207, G01K 1112

Patent

active

056764650

ABSTRACT:
A method is disclosed for improving the signal retention of a liquid crystal sensing element comprising an embossed cavity containing the liquid crystal and a cover layer sealing the liquid crystal in the cavity by heat treating at about 95.degree. to about 120.degree. C. for a time sufficient to cause the embossed cavity to shrink to substantially its original form thereby forcing the liquid crystal to be forced up against the cover layer to form a domed structure. Essential to the success of the process is incorporation in the cavity of about 10 to about 50% by volume of air based on the volume of the cavity.

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patent: 4064872 (1977-12-01), Caplan
patent: 4150572 (1979-04-01), Lindquist
patent: 4345470 (1982-08-01), Hof et al.
patent: 4459046 (1984-07-01), Spirg
patent: 4469452 (1984-09-01), Sharpless et al.
patent: 5102233 (1992-04-01), Staerk et al.
patent: 5215378 (1993-06-01), Manske

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