Patent US3299346A successfully refreshed from Google Patents.
US3299346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Half-wave voltage control system for heating loads
Assignee: Motors Liquidation Co
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Filing: 1963-04-29
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Granted: 1967-01-17
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 Charles C Gambill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:13
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/30; G05D23/303
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN COMBINATION, AN ELECTRICAL LOAD, ALTERNATING CURRENT SUPPLY MEANS ELECTRICALLY CONNECTED TO SAID ELECTRICAL LOAD, A SEMI-CONDUCTOR CONTROL MEANS HAVING ELECTRODES CONNECTED IN SERIES WITH SAID ELECTRICAL LOAD, PREPONDERANTLY INDUCTIVE CIRCUIT MEANS BETWEEN SAID SUPPLY MEANS AND SAID ELECTRODES FOR REPEATEDLY APPLYING TO SAID ELECTRODES A PEAK VOLTAGE SUBSTANTIALLY AT THE TIME IN THE APPLICATION OF THE ALTERNATING CURRENT SINE WAVE TO THE CONTROL MEANS WHEN THE VOLTAGE PASSES THROUGH ZERO COMPRISING A FIRST TRANSFORMER HAVING INPUT TERMINAL MEANS ELECTRICALLY CONNECTED TO SAID SUPPLY MEANS AND HAVING OUTPUT TERMINAL
Claim 2
Dependent Claim
89 words
IN COMBINATION, AN ELECTRICAL LOAD, ALTERNATING CURRENT SUPPLY MEANS ELECTRICALLY CONNECTED TO SAID ELECTRICAL LOAD, A SEMI-CONDUCTOR CONTROL MEANS HAVING ELECTRODES CONNECTED IN SERIES WITH SAID ELECTRICAL LOAD, PREPONDERANTLY INDUCTIVE CIRCUIT MEANS BETWEEN SAID SUPPLY MEANS AND SAID ELECTRODES FOR REPEATEDLY APPLYING TO SAID ELECTRODES A PEAK VOLTAGE SUBSTANTIALLY AT THE TIME IN THE APPLICATION OF THE ALTERNATING CURRENT SINE WAVE TO THE CONTROL MEANS WHEN THE VOLTAGE PASSES THROUGH ZERO COMPRISING A FIRST TRANSFORMER HAVING INPUT TERMINAL MEANS ELECTRICALLY CONNECTED TO SAID SUPPLY MEANS AND HAVING OUTPUT TERMINAL
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |