Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1973-10-10
1976-05-04
Gill, James J.
Measuring and testing
Gas analysis
Moisture content or vapor pressure
58 1R, 116114V, 116114Y, G01K 1116, G01K 1106
Patent
active
039540111
ABSTRACT:
Indicating device suitable for visibly measuring parameters such as time, temperature, and time-temperature relationships. The device includes a porous fluid carrying pad, a wick material for said fluid, and an indicator means whereby the progress of fluid along the wick material can be visibly indicated and used to measure the passage of time, the exposure to a given minimum temperature, or a time-temperature relationship. The combination is adapted to regulate migration of fluid from the fluid source to the wick material.
REFERENCES:
patent: 3006313 (1961-10-01), Huyck et al.
patent: 3243303 (1966-03-01), Johnson
patent: 3420205 (1969-01-01), Morison
patent: 3479877 (1969-11-01), Allen et al.
patent: 3520124 (1970-07-01), Myers
patent: 3521489 (1970-07-01), Finkelstein et al.
patent: 3665770 (1972-05-01), Sagi et al.
patent: 3684737 (1972-08-01), Emigh
Hawley, Gessner G., The Condensed Chemical Dictionary, 8th Ed., N.Y., Van Nostrand Reinhold, 1971, pp. 329, 884, 885.
Mial, L. M. et al., A New Dictionary of Chemistry, 4th Ed., London, Longman, 1968, p. 513.
Gill James J.
Minnesota Mining and Manufacturing Company
Yasich Daniel M.
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