Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1975-09-08
1981-02-03
Goldberg, Gerald
Measuring and testing
Gas analysis
Moisture content or vapor pressure
G01N 2504
Patent
active
042480892
ABSTRACT:
A reversible disposable thermometer usable as a safe, convenient and low cost replacement for the mercury in glass clinical thermometer, comprises temperature indicating materials, with controllable and precise melting points, embedded in a flat probe, wherein they are arranged into an indicating matrix, located on both sides of the probe, which covers the physiological temperature range of humans in 0.2.degree. F. steps, and supplemented by a means of affecting the crystallization process of the compounds so that the melting process is accurately definable and the difference between melted and unmelted stage is readily discernible, such means preferably comprising cationic dye seeding in the materials to multiply crystal nucleation sites for fineness of crystal structure and to provide light scattering properties and, further to reduce solidification induction time to make the thermometer reversible and reusable.
REFERENCES:
patent: 3175401 (1965-03-01), Geldmacher
patent: 3430491 (1969-03-01), Gignilliat
patent: 3440882 (1969-04-01), Jones
patent: 3465590 (1969-09-01), Kluth et al.
patent: 3580079 (1971-05-01), Crites et al.
patent: 3631720 (1972-01-01), Weinstein
patent: 3633425 (1972-01-01), Sanford
patent: 3733905 (1973-05-01), Bremer
patent: 3859856 (1975-01-01), Keele et al.
patent: 3871232 (1975-03-01), Pickett et al.
patent: 3920574 (1975-11-01), Brown, Jr. et al.
patent: 3980581 (1976-09-01), Godsey et al.
Goldberg Gerald
Hieken Charles
Roskos Joseph W.
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