Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Phase comparison
Patent
1984-11-30
1987-01-13
Tokar, Michael J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Phase comparison
324 83R, G01R 2500
Patent
active
046367209
ABSTRACT:
A phase detector for monitoring the presence, sequence and polarity of each phase line for a three-phase power input and indicating when a phase is missing or out of sequence.
REFERENCES:
patent: 2434961 (1948-01-01), Ridley
patent: 2503598 (1950-04-01), Simkins
patent: 3134076 (1964-05-01), Haner
patent: 3156868 (1964-11-01), Murrills
patent: 4199798 (1980-04-01), Leppke
patent: 4210948 (1980-07-01), Waltz
patent: 4366521 (1982-12-01), Jessee
ABEX Corporation
Baker Jr. Thomas S.
Tokar Michael J.
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