Coating apparatus – With vacuum or fluid pressure chamber
Patent
1975-07-21
1977-03-22
McIntosh, John P.
Coating apparatus
With vacuum or fluid pressure chamber
118 64, 118314, 34 48, 733365, 73338, B05C 500
Patent
active
040130380
ABSTRACT:
Apparatus for controlling the temperature of an open liquid body when actual measurement of that temperature is not possible. A thermal analog of the liquid body, which is exposed to the same heating or cooling source as the liquid body, is incorporated into a sensor which provides controlling feedback to the heating or cooling source. The sensor, which is disposed in the atmosphere which surrounds or flows by the liquid body, includes a dry element and a wet wick, body of which are in thermal contact with a temperature sensing element. The dry element senses the temperature of the atmosphere and the wet wick has a cooling effect on the sensing element that is related to the rate of evaporation of liquid from the body. This sensor is advantageously employed in a system for regulating the temperature of a reagent film on a microscope slide.
REFERENCES:
patent: 2154927 (1939-04-01), Yaglou
patent: 3070459 (1962-12-01), Schaffer
patent: 3391670 (1968-07-01), Lester et al.
patent: 3771364 (1973-11-01), Worthington
Rogers Charles H.
Sullivan Kevin J.
Vance Miles E.
Corning Glass Works
McIntosh John P.
Patty, Jr. Clarence R.
Simmons, Jr. William J.
Zebrowski Walter S.
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