Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1977-04-06
1979-05-15
Swisher, S. Clement
Measuring and testing
Gas analysis
Moisture content or vapor pressure
73358, 116207, 116217, G01K 1108
Patent
active
041541065
ABSTRACT:
There is provided a disposable temperature indicator utilizing a change in condition of organic compounds at their melting point for the indication of temperature.
The disposable temperature indicator is used as a disposable clinical thermometer which comprises a temperature-sensing portion having a temperature-indicating mixture composed of a solid solution of two organic compounds belonging to n-aliphatic hydrocarbons, nontoxic, odorless and having a narrow range of melting points particularly suitable for use in clinical thermometers or a temperature-indicating mixture containing an amount of color reagent as means for developing a change in color upon the change from the solid to liquid state of the temperature indicating mixture upon exposure to heat of a body to be temperature-registered; and a temperature-indicating portion formed of a porous thin plate with one surface or both surfaces thereof coated with one or both of a pair of compounds soluble in said temperature-indicating mixture, such resulting coating serving to produce a color compound by reaction with said temperature-indicating mixture.
REFERENCES:
patent: 3175401 (1965-03-01), Geldmacher
patent: 3465590 (1969-09-01), Kluth
patent: 3677088 (1972-07-01), Lang
patent: 3835990 (1974-09-01), Sagi et al.
patent: 3895523 (1975-07-01), Nollen
patent: 3929021 (1975-12-01), Pecorella
patent: 3946612 (1976-03-01), Sagi et al.
patent: 3981683 (1976-09-01), Larsson
Inoue Fumiyoshi
Kikuchi Yukio
Sonoi Shinsuke
Takiguchi Yasunori
Adams Bruce L.
Burns Robert E.
Corr Denis E.
Lobato Emmanuel J.
Morishita Jintan Company, Limited
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