Patent US3258579A successfully refreshed from Google Patents.
US3258579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oven control circuit
Assignee: General Electric Co
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Filing: 1963-12-26
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Granted: 1966-06-28
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Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Dills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:22
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/1906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
IN AN ELECTRIC RANGE OVEN HAVING AN UPPER HEATER AND A LOWER HEATER, A CONTROL SYSTEM FOR PROPORTIONING THE CURRENT FLOW THROUGH SAID UPPER AND LOWER HEATERS, SAID CONTROL SYSTEM COMPRISING: (A) A BRIDGE CIRCUIT HAVING FIRST AND SECONDS LEGS CONNECTED IN PARALLEL AND ARRANGED FOR CONNECTION BETWEEN FIRST AND SECOND POWER SUPPLY LINES OF A SOURCE OF ALTERNATING VOLTAGE, (B) SAID FIRST LEG INCLUDING FIRST AND SECOND SERIALLYCONNECTED INVERSELY-POLED RECTIFYING ELEMENTS HAVING THEIR RESPECTIVE ANODES CONNECTED TO SAID FIRST AND SECOND POWER SUPPLY LINES RESPECTIVELY, (C) SAID SECOND LEG INCLUDING THIRD AND FOURTH INVERSELY-POLED RECTIFYING ELEMENTS HAVING THEIR RESPECTIVE CATHODES CONNECTED TO SAID FIRST AND SECOND POWER SUPPLY LINES RESPECTIVELY AND THEIR ANODES SERIALLY-CONNECTED THROUGH SAID UPPER HEATER, (D) CIRCUIT MEANS CONNECTED BETWEEN THE JUNCTION OF SAID FIRST AND SECOND RECTIFYING ELEMENTS AND A POINT INTERMEDIATE THE ANODE OF SAID THIRD RECTIFYING ELEMENT AND SAID UPPER HEATER, (1) SAID CIRCUIT MEANS INCLUDING AN ELECTRICALLY CONTROLLED UNIDIRECTIONAL SWITCHING DEVICE SERIALLY-CONNECTED WITH SAID LOWER HEATER AND ADAPTED TO ALLOW CURRENT FLOW FROM SAID FIRST LEG TO SAID SECOND LEG.
Claim 2
Dependent Claim
178 words
IN AN ELECTRIC RANGE OVEN HAVING AN UPPER HEATER AND A LOWER HEATER, A CONTROL SYSTEM FOR PROPORTIONING THE CURRENT FLOW THROUGH SAID UPPER AND LOWER HEATERS, SAID CONTROL SYSTEM COMPRISING: (A) A BRIDGE CIRCUIT HAVING FIRST AND SECONDS LEGS CONNECTED IN PARALLEL AND ARRANGED FOR CONNECTION BETWEEN FIRST AND SECOND POWER SUPPLY LINES OF A SOURCE OF ALTERNATING VOLTAGE, (B) SAID FIRST LEG INCLUDING FIRST AND SECOND SERIALLYCONNECTED INVERSELY-POLED RECTIFYING ELEMENTS HAVING THEIR RESPECTIVE ANODES CONNECTED TO SAID FIRST AND SECOND POWER SUPPLY LINES RESPECTIVELY, (C) SAID SECOND LEG INCLUDING THIRD AND FOURTH INVERSELY-POLED RECTIFYING ELEMENTS HAVING THEIR RESPECTIVE CATHODES CONNECTED TO SAID FIRST AND SECOND POWER SUPPLY LINES RESPECTIVELY AND THEIR ANODES SERIALLY-CONNECTED THROUGH SAID UPPER HEATER, (D) CIRCUIT MEANS CONNECTED BETWEEN THE JUNCTION OF SAID FIRST AND SECOND RECTIFYING ELEMENTS AND A POINT INTERMEDIATE THE ANODE OF SAID THIRD RECTIFYING ELEMENT AND SAID UPPER HEATER, (1) SAID CIRCUIT MEANS INCLUDING AN ELECTRICALLY CONTROLLED UNIDIRECTIONAL SWITCHING DEVICE SERIALLY-CONNECTED WITH SAID LOWER HEATER AND ADAPTED TO ALLOW CURRENT FLOW FROM SAID FIRST LEG TO SAID SECOND LEG.
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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |