US3076134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1960-04-07
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Granted: 1963-01-29
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Expires: 1980-04-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Allan I Bennett
- 👤 Richard L Longini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:26
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/22; G05D23/2236; G05D23/2237
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
AN EXCITATION VOLTAGE SYSTEM FOR APPARATUS TRANSFORMING ALTERNATING CURRENT INPUT TO AN ELECTRICAL OUTPUT IN RESPONSE TO THE PHASE RELATIONSHIP OF THE EXCITATION VOLTAGE WITH RESPECT TO THE ALTERNATING CURRENT INPUT; SAID EXCITATION SYSTEM COMPRISING MEANS FOR PROVIDING A CONSTANT COMPONET OF EXCITATION VOLTAGE HAVING A PRESELECTED PHASE RELATIONSHIP WITH SAID ALTERNATING CURRENT INPUT FOR A PREDETERMINED ELECTRICAL OUTPUT LEVEL; SENSING MEANS FOR PROVIDING AN ERROR SIGNAL HAVING A MAGNITUDE AND POLARITY FUNCTIONALLY RELATED TO THE DIFFERENCE BETWEEN THE INSTANTANEOUS MAGNITUDE OF ELECTRICAL OUTPUT AND SAID PREDETERMINED ELECTRICAL OUTPUT LEVEL; MEANS FOR PROVIDING A VARIABLE COMPONENT OF EXCITATION VOLTAGE SUBSTANTIALLY IN QUADRATURE WITH SAID CONSTANT COMPONENT OF EXCITATION VOLTAGE BY AMPLIFYING SAID ERROR SIGNAL AND MODULATING THEREWITH A WAVEFORM IDENTICAL TO SAID CONSTANT COMPONENT OF EXCITATION VOLTAGE; AND MEANS FOR SUMMING SAID VARIABLE AND CONSTANT COMPONENT, THE RESULTANT EXCITATION VOLTAGE HAVING A PHASE DISPLACEMENT ABOUT SAID PRESELECTED PHASE RELATIONSHIP AS DETERMINED BY SAID ERROR SIGNAL.
Claim 2
Dependent Claim
155 words
AN EXCITATION VOLTAGE SYSTEM FOR APPARATUS TRANSFORMING ALTERNATING CURRENT INPUT TO AN ELECTRICAL OUTPUT IN RESPONSE TO THE PHASE RELATIONSHIP OF THE EXCITATION VOLTAGE WITH RESPECT TO THE ALTERNATING CURRENT INPUT; SAID EXCITATION SYSTEM COMPRISING MEANS FOR PROVIDING A CONSTANT COMPONET OF EXCITATION VOLTAGE HAVING A PRESELECTED PHASE RELATIONSHIP WITH SAID ALTERNATING CURRENT INPUT FOR A PREDETERMINED ELECTRICAL OUTPUT LEVEL; SENSING MEANS FOR PROVIDING AN ERROR SIGNAL HAVING A MAGNITUDE AND POLARITY FUNCTIONALLY RELATED TO THE DIFFERENCE BETWEEN THE INSTANTANEOUS MAGNITUDE OF ELECTRICAL OUTPUT AND SAID PREDETERMINED ELECTRICAL OUTPUT LEVEL; MEANS FOR PROVIDING A VARIABLE COMPONENT OF EXCITATION VOLTAGE SUBSTANTIALLY IN QUADRATURE WITH SAID CONSTANT COMPONENT OF EXCITATION VOLTAGE BY AMPLIFYING SAID ERROR SIGNAL AND MODULATING THEREWITH A WAVEFORM IDENTICAL TO SAID CONSTANT COMPONENT OF EXCITATION VOLTAGE; AND MEANS FOR SUMMING SAID VARIABLE AND CONSTANT COMPONENT, THE RESULTANT EXCITATION VOLTAGE HAVING A PHASE DISPLACEMENT ABOUT SAID PRESELECTED PHASE RELATIONSHIP AS DETERMINED BY SAID ERROR SIGNAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |