Electricity: measuring and testing – Electrolyte properties – Using a conductivity determining device
Patent
1978-08-30
1980-06-03
Tokar, Michael J.
Electricity: measuring and testing
Electrolyte properties
Using a conductivity determining device
324449, G01N 2742
Patent
active
042064074
ABSTRACT:
An improved apparatus for evaluating the continuity of the enamel lining of metallic containers. The apparatus has been developed for quality control inspection of containers and is designed to ensure that the entire interior surface of the container is evaluated by the test. The apparatus utilizes cooperating carbon electrodes of opposite polarity, an electrolyte solution, a grounded container, an enabling circuit and a meter to measure current flow through defects or discontinuities in the enamel lining. The carbon electrodes include a primary or measuring electrode, and a short secondary or liquid sensing electrode.
Electrolyte solution is added until contact is established between the primary and the sensing electrodes thereby activating an enabling circuit which is used to control the meter display. By positioning the sensing electrode at the upper boundary of the enamel lining proximate the mouth of the container, the user is assured that the container has been sufficiently filled with electrolyte to permit proper evaluation of the container.
REFERENCES:
patent: 3555414 (1971-01-01), Deichelmann
patent: 3719884 (1973-03-01), Laroche
patent: 3858114 (1974-12-01), Voellmin
patent: 3863146 (1975-01-01), Ehret
patent: 3965415 (1976-06-01), Ehret
American Can Company
Auber Robert P.
Bowie Stuart S.
Hosford William C.
Tokar Michael J.
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