Patent US3189789A successfully refreshed from Google Patents.
US3189789A
Expired / Lapsed
US
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Ignition circuit for a discharge lamp
Assignee: General Electric Co
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Filing: 1962-07-02
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Granted: 1965-06-15
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Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Howell Edward Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:16
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/16; H05B41/20; H05B41/23; H05B41/231; H05B41/26; H05B41/28; H05B41/288; H05B41/2881; Y; Y10; Y10S; Y10S315/00; Y10S315/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A PULSE GENERATING CIRCUIT FOR A DISCHARGE LAMP REQUIRING A HIGH VOLTAGE PULSE FOR INITIATING CONDUCTION THEREIN COMPRISING, A DISCHARGE LAMP, A CONTROLLED RECTIFIER CONNECTED TO A PULSATING CURRENT SOURCE AND HAVING A CONTROL ELECTRODE, MEANS FOR RENDERING SAID CONTROLLED RECTIFIER CONDUCTIVE INCLUDING A ZENER DIODE CONNECTED TO THE SOURCE AND TO THE CONTROL ELECTRODE AND MEANS INCLUDING AN OPERACTING CAPACITOR RESPONSIVE TO THE CONTROLLED RECTIFIER WHEN IT IS RENDERED CONDUCTIVE FOR DELIVERING A HIGH VOLTAGE PULSE TO THE LAMP.
Claim 2
Dependent Claim
80 words
A PULSE GENERATING CIRCUIT FOR A DISCHARGE LAMP REQUIRING A HIGH VOLTAGE PULSE FOR INITIATING CONDUCTION THEREIN COMPRISING, A DISCHARGE LAMP, A CONTROLLED RECTIFIER CONNECTED TO A PULSATING CURRENT SOURCE AND HAVING A CONTROL ELECTRODE, MEANS FOR RENDERING SAID CONTROLLED RECTIFIER CONDUCTIVE INCLUDING A ZENER DIODE CONNECTED TO THE SOURCE AND TO THE CONTROL ELECTRODE AND MEANS INCLUDING AN OPERACTING CAPACITOR RESPONSIVE TO THE CONTROLLED RECTIFIER WHEN IT IS RENDERED CONDUCTIVE FOR DELIVERING A HIGH VOLTAGE PULSE TO THE LAMP.
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |