Patent US2555211A successfully refreshed from Google Patents.
US3293446A
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US
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A. c. standby power supply systems
Assignee: Allis Chalmers Corp
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Filing: 1963-05-13
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Granted: 1966-12-20
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Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 Baude John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:40
CPC Classifications
H; H02; H02J; H02J9/00; H02J9/04; H02J9/06; H02J9/062; Y; Y02; Y02B; Y02B70/00; Y02B70/30; Y04; Y04S; Y04S20/00; Y04S20/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A STANDBY A.C. ELECTRICAL POWER SUPPLY SYSTEM CONNECTABLE TO AN A.C POWER SOURCE, TO A DIRECT CURRENT SOURCE, AND TO A LOAD, SAID SYSTEM COMPRISING: REFERENCE SIGNAL MEANS FOR PRODUCING AN ALTERNATING REFERENCE SIGNAL HAVING A PREDETERMINED AMPLITUDE; STATIC OUTPUT MEANS CONNECTED TO THE LOAD, SAID OUTPUT MEANS ENERGIZED BY THE DIRECT CURRENT SOURCE AND CONTROLLABLE BY THE REFERENCE SIGNAL MEANS TO SUBSTANTIALLY INSTANTANEOUSLY FURNISH ELECTRICAL POWER TO THE LOAD; VOLTAGE SENSING MEANS RESPONSIVE TO A MEASURE OF THE A.C. POWER SOURCE OUTPUT AND THE REFERENCE SIGNAL FOR PRODUCING AN OUTPUT INDICATING THE DIFFERENCE IN AMPLITUDE BETWEEN THE MEASURE OF THE REFERENCE SIGNAL AND THE A.C. POWER SOURCE OUTPUT: SWITCHING MEANS FOR CONNECTING THE A.C. POWER SOURCE TO AND DISCONNECTING THE A.C. POWER SOURCE FROM THE LOAD, SAID SWITCHING MEANS RESPONSIVE TO THE
Claim 2
Dependent Claim
133 words
A STANDBY A.C. ELECTRICAL POWER SUPPLY SYSTEM CONNECTABLE TO AN A.C POWER SOURCE, TO A DIRECT CURRENT SOURCE, AND TO A LOAD, SAID SYSTEM COMPRISING: REFERENCE SIGNAL MEANS FOR PRODUCING AN ALTERNATING REFERENCE SIGNAL HAVING A PREDETERMINED AMPLITUDE; STATIC OUTPUT MEANS CONNECTED TO THE LOAD, SAID OUTPUT MEANS ENERGIZED BY THE DIRECT CURRENT SOURCE AND CONTROLLABLE BY THE REFERENCE SIGNAL MEANS TO SUBSTANTIALLY INSTANTANEOUSLY FURNISH ELECTRICAL POWER TO THE LOAD; VOLTAGE SENSING MEANS RESPONSIVE TO A MEASURE OF THE A.C. POWER SOURCE OUTPUT AND THE REFERENCE SIGNAL FOR PRODUCING AN OUTPUT INDICATING THE DIFFERENCE IN AMPLITUDE BETWEEN THE MEASURE OF THE REFERENCE SIGNAL AND THE A.C. POWER SOURCE OUTPUT: SWITCHING MEANS FOR CONNECTING THE A.C. POWER SOURCE TO AND DISCONNECTING THE A.C. POWER SOURCE FROM THE LOAD, SAID SWITCHING MEANS RESPONSIVE TO THE
References Cited (Backward Citations)
US1951482A
Cited
US3229111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |