US3355650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical power and control mechanism for electrical appliances
Assignee: Unisys Corp
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Filing: 1963-12-26
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Granted: 1967-11-28
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Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 Robert J Tolmie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:38
CPC Classifications
H; H02; H02H; H02H9/00; H02H9/04; H02H9/041; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/06; H02M7/066; H02P; H02P4/00; H02M7/05; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/917; Y10S388/919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
IN COMBINATION, OPERATING MEANS FOR AN ELECTRICAL APPLIANCE; ELECTRICAL ENERGY STORAGE MEANS ELECTRICALLY CONNECTED TO SAID OPERATING MEANS AND INCLUDING A CAPACITOR IN PARALLEL WITH SAID OPERATING MEANS; POWER CONVERTING MEANS FOR CONVERTING ALTERNATING POWER APPLIED THERETO TO UNIDIRECTIONAL POWER; ELECTRONIC SWITCHING MEANS ELECTRICALLY INTERCONNECTED TO SAID POWER CONVERTING MEANS AND CONSISTING OF A SILICON CONTROLLED RECTIFIER AND ITS ASSOCIATED GATING CIRCUIT CONNECTED AT THE OUTPUT OF SAID POWER CONVERTING MEANS, SAID RECTIFIER SELECTED TO CONDUT AND APPLY A LOW IMPEDANCE SUBSTANTIALLY SHORT-CIRCUIT PATH ACROSS THE OUTPUT OF SAID POWER CONVERTING MEANS UNDER CONDITIONS WHERE THE RECTIFIED POWER VOLTAGE FROM SAID POWER CONVERTING MEANS EXCEEDS A PREDETERMINED VOLTAGE MAGNITUDE TO INTERRUPT UNIDIRECTIONAL POWER APPLIED BY SAID CONVERTING MEANS TO SAID OPERATING MEANS AND SAID CAPACITOR; AND SAID COMBINATION FURTHER INCLUDING UNIDIRECTIONAL CURRENT CONDUCTING MEANS ELECTRICALLY INTERPOSED BETWEEN SAID CAPACITOR AND SAID SILICON CONTROLLED RECTIFIER, SAID CAPACITOR OPERABLE UPON SAID CONDUCTION OF SAID SILICON CONTROLLED RECTIFIER TO SUPPLY STORED POWER RECEIVED FROM SAID POWER CONVERTING MEANS TO SAID OPERATING MEANS FOR MAINTAINING ENERGY THERETO IN THE CONDUCTING STATE OF SAID RECTIFIER WITH SAID UNIDIRECTIONAL CURRENT CONDUCTING MEANS PREVENTING THE DISCHARGE OF SAID CAPACITOR THROUGH SAID SILICON CONTROLLED RECTIFIER.
Claim 2
Dependent Claim
197 words
IN COMBINATION, OPERATING MEANS FOR AN ELECTRICAL APPLIANCE; ELECTRICAL ENERGY STORAGE MEANS ELECTRICALLY CONNECTED TO SAID OPERATING MEANS AND INCLUDING A CAPACITOR IN PARALLEL WITH SAID OPERATING MEANS; POWER CONVERTING MEANS FOR CONVERTING ALTERNATING POWER APPLIED THERETO TO UNIDIRECTIONAL POWER; ELECTRONIC SWITCHING MEANS ELECTRICALLY INTERCONNECTED TO SAID POWER CONVERTING MEANS AND CONSISTING OF A SILICON CONTROLLED RECTIFIER AND ITS ASSOCIATED GATING CIRCUIT CONNECTED AT THE OUTPUT OF SAID POWER CONVERTING MEANS, SAID RECTIFIER SELECTED TO CONDUT AND APPLY A LOW IMPEDANCE SUBSTANTIALLY SHORT-CIRCUIT PATH ACROSS THE OUTPUT OF SAID POWER CONVERTING MEANS UNDER CONDITIONS WHERE THE RECTIFIED POWER VOLTAGE FROM SAID POWER CONVERTING MEANS EXCEEDS A PREDETERMINED VOLTAGE MAGNITUDE TO INTERRUPT UNIDIRECTIONAL POWER APPLIED BY SAID CONVERTING MEANS TO SAID OPERATING MEANS AND SAID CAPACITOR; AND SAID COMBINATION FURTHER INCLUDING UNIDIRECTIONAL CURRENT CONDUCTING MEANS ELECTRICALLY INTERPOSED BETWEEN SAID CAPACITOR AND SAID SILICON CONTROLLED RECTIFIER, SAID CAPACITOR OPERABLE UPON SAID CONDUCTION OF SAID SILICON CONTROLLED RECTIFIER TO SUPPLY STORED POWER RECEIVED FROM SAID POWER CONVERTING MEANS TO SAID OPERATING MEANS FOR MAINTAINING ENERGY THERETO IN THE CONDUCTING STATE OF SAID RECTIFIER WITH SAID UNIDIRECTIONAL CURRENT CONDUCTING MEANS PREVENTING THE DISCHARGE OF SAID CAPACITOR THROUGH SAID SILICON CONTROLLED RECTIFIER.
References Cited (Backward Citations)
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US3214673A
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US3246229A
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US3213349A
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US3215896A
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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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |