Boots – shoes – and leggings
Patent
1981-07-16
1984-07-17
Chin, Gary
Boots, shoes, and leggings
364571, 204 1T, 204406, G01N 2746
Patent
active
044609671
ABSTRACT:
The circuitry forms part of testing apparatus for measuring the concentration of ions in fluids, primarily body fluids, including the measurement of chlorides, ionized calcium, sodium and potassium as well as other ions. A small sample fluid is subjected to a controlled mechanical oscillation to thoroughly expose a true representative sample to the electrode for measurement. The apparatus has a digital readout display and two associated switches for calibrating the circuitry with high and low standard fluids. The low standard circuit is calibrated with the low standard sample to establish offset correction while the high standard circuit is calibrated with the high standard sample to establish gain correction. After the instrument has been adjusted for proper low and high standard values, for a particular electrode, the offset correction and gain correction parameters are established so that electrode input values cause proper concentrations to be displayed.
REFERENCES:
patent: 4028534 (1977-06-01), Tucker
patent: 4043756 (1977-08-01), Sommervold
patent: 4211614 (1980-07-01), Eppstein et al.
patent: 4218746 (1980-08-01), Koshiishi
patent: 4321113 (1982-03-01), Grambow et al.
Krull Irwin H.
Tisue James G.
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