US3149224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater control circuit
Assignee: Monsanto Co
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Filing: 1961-11-24
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Granted: 1964-09-15
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Expires: 1981-11-24
Abstract
No abstract record available.
Inventors
- 👤 Horne Ronald
- 👤 Robert D Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:32
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/1906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A HEATER CONTROL CIRCUIT, COMPRISING A POWER SUPPLY, A SEMI-CONDUCTOR, A HEATER CONNECTED IN SERIES WITH THE SENSING BRIDGE CONNECTED TO THE POWER SUPPLY, A RESISTOR CONNECTED TO THE BRIDGE, A CAPACITOR CONNECTED TO THE RESISTOR AND TO ONE SIDE OF THE POWER SUPPLY, SEMI-CONDUCTIVE MEANS CONNECTED TO THE JUNCTION OF THE RESISTOR AND THE CAPACITOR AND TO SAID ONE SIDE OF THE POWER SUPPLY SO THAT A CHARGE ON THE CAPACITOR RENDERS SAID SEMICONDUCTIVE MEANS CONDUCTIVE, A SECOND RESISTOR CONNECTED TO THE SEMI-CONDUCTIVE MEANS IN SUCH A MANNER THAT CONDUCTION OF SAID SEMI-CONDUCTIVE MEANS CONNECTS THE CAPACITOR TO THE SECOND RESISTOR FOR DISCHARGE THERETHROUGH, SAID SEMI-CONDUCTOR BEING CONNECTED TO THE JUNCTION OF THE SEMI-CONDUCTIVE MEANS AND THE SECOND RESISTOR SO THAT SAID SEMI-CONDUCTOR IS RENDERED CONDUCTIVE WHEN THE CAPACITOR DISCHARGES THROUGH THE SECOND RESISTOR.
Claim 2
Dependent Claim
135 words
A HEATER CONTROL CIRCUIT, COMPRISING A POWER SUPPLY, A SEMI-CONDUCTOR, A HEATER CONNECTED IN SERIES WITH THE SENSING BRIDGE CONNECTED TO THE POWER SUPPLY, A RESISTOR CONNECTED TO THE BRIDGE, A CAPACITOR CONNECTED TO THE RESISTOR AND TO ONE SIDE OF THE POWER SUPPLY, SEMI-CONDUCTIVE MEANS CONNECTED TO THE JUNCTION OF THE RESISTOR AND THE CAPACITOR AND TO SAID ONE SIDE OF THE POWER SUPPLY SO THAT A CHARGE ON THE CAPACITOR RENDERS SAID SEMICONDUCTIVE MEANS CONDUCTIVE, A SECOND RESISTOR CONNECTED TO THE SEMI-CONDUCTIVE MEANS IN SUCH A MANNER THAT CONDUCTION OF SAID SEMI-CONDUCTIVE MEANS CONNECTS THE CAPACITOR TO THE SECOND RESISTOR FOR DISCHARGE THERETHROUGH, SAID SEMI-CONDUCTOR BEING CONNECTED TO THE JUNCTION OF THE SEMI-CONDUCTIVE MEANS AND THE SECOND RESISTOR SO THAT SAID SEMI-CONDUCTOR IS RENDERED CONDUCTIVE WHEN THE CAPACITOR DISCHARGES THROUGH THE SECOND RESISTOR.
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |