Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1981-12-02
1983-10-04
Trafton, David L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
350355, 350357, G09G 316
Patent
active
044082029
ABSTRACT:
An electrokinetic display system in which zones or patterns of different chemical concentrations and gradients associated therewith are displayed in an electrochemical cell. The electrolyte contains reagents which take part in a reversible reaction during electrolysis. The reagents are self-indicating or include an indicator, or can be mixtures of both. Gas evolved at the electrodes is prevented from mixing the electrolyte too vigorously. D.C. current is passed between the cell electrodes in one direction long enough to establish a visible flow in the electrolyte. The use of reagents which take part in redox reactions or in which a reversible change in pH takes place is set forth. In a preferred embodiment, the active species in the electrolyte including the electrolysis reaction products are accelerated by a magnetic field transverse to the electric current path. Arrangements for widely varying the visible or multicolored eddy current patterns generated are set forth including moving the magnetic field, varying the current as by reversing and/or interrupting the current, and using alternating current. Also set forth are arrangements for excluding pH or redox indictors from the region of the electrodes.
REFERENCES:
patent: Re28360 (1975-03-01), Evans et al.
patent: 2353782 (1944-07-01), Neumark
patent: 3207684 (1965-09-01), Dotts
patent: 3443859 (1969-05-01), Rogers
patent: 3648269 (1972-03-01), Rosenweig et al.
patent: 3909116 (1975-09-01), Kohashi
patent: 3912368 (1975-10-01), Ponjee et al.
patent: 3938131 (1976-02-01), Van Doorn et al.
patent: 3967265 (1976-06-01), Jacob
patent: 4043654 (1977-08-01), Silverberg
patent: 4071430 (1978-01-01), Liebert
patent: 4093534 (1978-06-01), Carter et al.
patent: 4116535 (1978-09-01), Ponjee et al.
patent: 4124458 (1978-11-01), Moeglich
patent: 4166676 (1979-09-01), Furuta et al.
patent: 4187160 (1980-02-01), Zimmermann
patent: 4294519 (1981-10-01), Hashimoto
Dash & King; "Electrothinning and Electrodeposition of Metals in Magnetic Fields"; J. Electrochem. Soc., vol. 119, No. 1, Jan. 1977, pp. 51-56.
44th Metal Finishing Guidebook Directory for 1976, pp. 218, 268, 379-382.
Jay Edgar N.
Trafton David L.
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