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US3226561A Expired / Lapsed US ⏱️ 0.0 years remaining

Synchronizing devices between alternating current systems

Assignee: Toshiba Corp
•
Filing: 1961-08-21
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Granted: 1965-12-28
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Expires: 1981-08-21
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Abstract

No abstract record available.

Inventors

  • 👤 Taniai Seiichi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 17:57
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/38; H02J3/40; H02J3/42

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 160 words
A SYNCHRONIZING DEVICE FOR USE TO PARALLEL TWO DIFFERENT ALTERNATING CURRENT SYSTEMS CONNECTED TO DIFFERENT SOURCES, COMPRISING, A CIRCUIT BREAKER ADAPTER TO INTERCONNECT SAID TWO ALTERNATING CURRENT CIRCUITS, MEANS CONNECTED IN OPERATION TO SAID TWO ALTERNATING CURRENT SYSTEMS TO DERIVE FROM SAID TWO SYSTEMS DERIVED VOLTAGES THE PHASES OF WHICH ARE PERPENDICULAR TO EACH OTHER WHEN THE PHASES OF SAID SYSTEMS COINCIDE, MEANS CONNECTED TO RECEIVE SAID DERIVED VOLTAGES TO DERIVE RESULTANT VOLTAGES RESPECTIVELY CORRESPONDING TO THE VECTOR SUM AND THE VECTOR DIFFERENCE OF SAID DERIVED VOLTAGES AND INCLUDING MEANS TO RECTIFY SAID RESULTANT VOLTAGES AND DEVELOP A DIFFERENTIAL VOLTAGE CORRESPONDING TO THE DIFFERENCE BETWEEN SAID RESULTANT VOLTAGES, CIRCUIT MEANS COMPRISING DIFFERENTIATING AND INTEGRATING CIRCUITS CONNECTED IN PARALLEL TO RECEIVE SAID DIFFERENTIAL VOLTAGE, MEANS INCLUDED IN EACH OF SAID DIFFERENTIATING AND INTEGRATING CIRCUITS COOPERATING TO CLOSE SAID CIRCUIT BREAKER IN RESPONSE TO CURRENT FLOW THROUGH SAID DIFFERENTIATING AND INTEGRATING CIRCUITS WHEN SAID DIFFERENTIAL VOLTAGE HAS A VALUE GREATER THAN ZERO.
Claim 2
Dependent Claim 160 words
A SYNCHRONIZING DEVICE FOR USE TO PARALLEL TWO DIFFERENT ALTERNATING CURRENT SYSTEMS CONNECTED TO DIFFERENT SOURCES, COMPRISING, A CIRCUIT BREAKER ADAPTER TO INTERCONNECT SAID TWO ALTERNATING CURRENT CIRCUITS, MEANS CONNECTED IN OPERATION TO SAID TWO ALTERNATING CURRENT SYSTEMS TO DERIVE FROM SAID TWO SYSTEMS DERIVED VOLTAGES THE PHASES OF WHICH ARE PERPENDICULAR TO EACH OTHER WHEN THE PHASES OF SAID SYSTEMS COINCIDE, MEANS CONNECTED TO RECEIVE SAID DERIVED VOLTAGES TO DERIVE RESULTANT VOLTAGES RESPECTIVELY CORRESPONDING TO THE VECTOR SUM AND THE VECTOR DIFFERENCE OF SAID DERIVED VOLTAGES AND INCLUDING MEANS TO RECTIFY SAID RESULTANT VOLTAGES AND DEVELOP A DIFFERENTIAL VOLTAGE CORRESPONDING TO THE DIFFERENCE BETWEEN SAID RESULTANT VOLTAGES, CIRCUIT MEANS COMPRISING DIFFERENTIATING AND INTEGRATING CIRCUITS CONNECTED IN PARALLEL TO RECEIVE SAID DIFFERENTIAL VOLTAGE, MEANS INCLUDED IN EACH OF SAID DIFFERENTIATING AND INTEGRATING CIRCUITS COOPERATING TO CLOSE SAID CIRCUIT BREAKER IN RESPONSE TO CURRENT FLOW THROUGH SAID DIFFERENTIATING AND INTEGRATING CIRCUITS WHEN SAID DIFFERENTIAL VOLTAGE HAS A VALUE GREATER THAN ZERO.

References Cited (Backward Citations)

GB444270A Cited
US2279978A Cited
US2564439A Cited
US2566832A Cited
US2675492A Cited
US2777075A Cited
US2838685A Cited
US2900528A Cited
US2908826A Cited
US3069556A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1968-12-27 1969-06-28 1969-12-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1972-12-27 1973-06-28 1973-12-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1976-12-27 1977-06-28 1977-12-28 $7700.00 Window Closed / Lapsed

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