G - Physics – 05 – D
Patent
G - Physics
05
D
341/34
G05D 9/12 (2006.01)
Patent
CA 1238963
Abstract of the Disclosure An apparatus for controlling liquid level, comprising containment means for containing and dispensing liquid, flow varying means operable for varying flow of liquid into the containment means, stepper motor means for operating the flow varying means, sensor means for sensing level of liquid in the containment means, and PDD controller means connected between the sensor means and the stepper motor means for controlling liquid level.
486305
Clarke David W.
Knapp David J.
Waltz Marion D.
Aluminum Company Of America
Smart & Biggar
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