US3286178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for measuring active and reactive power in a 3-phi, 4-w distribution system, including three autotransformers interconnected to provide 2-phi to 3-phi conversion
Assignee: Yokogawa Electric Corp
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Filing: 1962-12-27
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Granted: 1966-11-15
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Expires: 1982-12-27
Abstract
No abstract record available.
Inventors
- 👤 Alice C Ultcht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:10
CPC Classifications
G; G01; G01R; G01R21/00; G01R21/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
AN ELECTRICAL MEASURING SYSTEM FOR OBTAINING THREE VOLTAGES WHICH ARE REPRESENTATIVE OF, AND IN PHASE WITH, THE POTENTIALS EXISTING IN A THREE-PHASE, FOUR LINE DISTRIBUTION SYSTEM COMPRISING, FIRST TRANSFORMATION MEANS CONNECTED TO THE NEUTRAL LINE AND THE FIRST LINE FOR OBTAINING A FIRST VOLTAGE PROPORTIONAL TO AND IN PHASE WITH THE VOLTAGE BETWEEN SAID NEUTRAL LINE AND SAID FIRST LINE, SECOND TRANSFORMATION MEANS CONNECTED TO THE NEUTRAL LINE AND THE SECOND LINE FOR OBTAINING A SECOND VOLTAGE PROPORTIONAL TO AND IN PHASE WITH THE VOLTAGE BETWEEN SAID NEUTRAL LINE AND SAID SECOND LINE, MEANS CONNECTED TO SAID FIRST AND SECOND TRANSFORMATION MEANS AND RESPONSIVE TO SAID FIRST AND SECOND PROPORTIONAL VOLTAGES FOR GENERATING A THIRD VOLTAGE PROPORTIONAL TO AND IN PHASE WITH THE VOLTAGE BETWEEN SAID NEUTRAL LINE AND THE THIRD LINE, AND UTILIZATION MEANS CONNECTED TO SAID GENERATING MEANS FOR MEASURING SAID FIRST, SECOND, AND THIRD VOLTAGES.
Claim 2
Dependent Claim
148 words
AN ELECTRICAL MEASURING SYSTEM FOR OBTAINING THREE VOLTAGES WHICH ARE REPRESENTATIVE OF, AND IN PHASE WITH, THE POTENTIALS EXISTING IN A THREE-PHASE, FOUR LINE DISTRIBUTION SYSTEM COMPRISING, FIRST TRANSFORMATION MEANS CONNECTED TO THE NEUTRAL LINE AND THE FIRST LINE FOR OBTAINING A FIRST VOLTAGE PROPORTIONAL TO AND IN PHASE WITH THE VOLTAGE BETWEEN SAID NEUTRAL LINE AND SAID FIRST LINE, SECOND TRANSFORMATION MEANS CONNECTED TO THE NEUTRAL LINE AND THE SECOND LINE FOR OBTAINING A SECOND VOLTAGE PROPORTIONAL TO AND IN PHASE WITH THE VOLTAGE BETWEEN SAID NEUTRAL LINE AND SAID SECOND LINE, MEANS CONNECTED TO SAID FIRST AND SECOND TRANSFORMATION MEANS AND RESPONSIVE TO SAID FIRST AND SECOND PROPORTIONAL VOLTAGES FOR GENERATING A THIRD VOLTAGE PROPORTIONAL TO AND IN PHASE WITH THE VOLTAGE BETWEEN SAID NEUTRAL LINE AND THE THIRD LINE, AND UTILIZATION MEANS CONNECTED TO SAID GENERATING MEANS FOR MEASURING SAID FIRST, SECOND, AND THIRD VOLTAGES.
References Cited (Backward Citations)
US1188145A
Cited
US2565824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |