US3359484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power supply apparatus
Assignee: Unisys Corp
•
Filing: 1965-09-13
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Granted: 1967-12-19
•
Expires: 1985-09-13
Abstract
No abstract record available.
Inventors
- 👤 Lloyd A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:51
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/125; H02M3/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A VOLTAGE REGULATOR FOR A DIRECT POWER SUPPLY COMPRISING: (A) A SOURCE OF UNREGULATED DIRECT CURRENT VOLTAGE; (B) A SATURABLE CORE TRANSFORMER HAVING AT LEAST A PRIMARY WINDING AND A SECONDARY WINDING; (C) AN ELECTRONIC SWITCHING DEVICE HAVING A CONTROL ELECTRODE ADAPTED TO RECEIVE CONTROL SIGNALS FOR CHANGING THE IMPEDANCE OF SAID SWITCHING DEVICE IN RESPONSE THERETO; (D) MEANS CONNECTING SAID PRIMARY WINDING AND SAID ELECTRONIC SWITCHING DEVICE IN SERIES CIRCUIT WITH A LOAD AND ACROSS SAID SOURCE OF DIRECT CURRENT VOLTAGE; (E) A SERIES RESONANT CIRCUIT INCLUDING A CAPACITOR CONNECTED TO SAID SECONDARY WINDING CONNECTED IN PARALLEL WITH SAID PRIMARY WINDING AND SAID SWITCHING DEVICE; (F) SENSING MEANS RESPONSIVE TO THE VOLTAGE APPEARING ACROSS SAID LOAD FOR PRODUCING CONTROL SIGNALS HAVING A FREQUENCY PROPORTIONAL TO THE DEVIATION OF THE LOAD VOLTAGE FROM A PREDETERMINED VALUE; AND
Claim 2
Dependent Claim
137 words
A VOLTAGE REGULATOR FOR A DIRECT POWER SUPPLY COMPRISING: (A) A SOURCE OF UNREGULATED DIRECT CURRENT VOLTAGE; (B) A SATURABLE CORE TRANSFORMER HAVING AT LEAST A PRIMARY WINDING AND A SECONDARY WINDING; (C) AN ELECTRONIC SWITCHING DEVICE HAVING A CONTROL ELECTRODE ADAPTED TO RECEIVE CONTROL SIGNALS FOR CHANGING THE IMPEDANCE OF SAID SWITCHING DEVICE IN RESPONSE THERETO; (D) MEANS CONNECTING SAID PRIMARY WINDING AND SAID ELECTRONIC SWITCHING DEVICE IN SERIES CIRCUIT WITH A LOAD AND ACROSS SAID SOURCE OF DIRECT CURRENT VOLTAGE; (E) A SERIES RESONANT CIRCUIT INCLUDING A CAPACITOR CONNECTED TO SAID SECONDARY WINDING CONNECTED IN PARALLEL WITH SAID PRIMARY WINDING AND SAID SWITCHING DEVICE; (F) SENSING MEANS RESPONSIVE TO THE VOLTAGE APPEARING ACROSS SAID LOAD FOR PRODUCING CONTROL SIGNALS HAVING A FREQUENCY PROPORTIONAL TO THE DEVIATION OF THE LOAD VOLTAGE FROM A PREDETERMINED VALUE; AND
References Cited (Backward Citations)
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US3209237A
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US3138722A
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US3197691A
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US3320519A
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US3305699A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |