Patent US3226597A successfully refreshed from Google Patents.
US3226597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure metal vapor discharge lamp
Assignee: General Electric Co
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Filing: 1963-09-04
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Granted: 1965-12-28
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Expires: 1983-09-04
Abstract
No abstract record available.
Inventors
- 👤 Alwin C Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:51
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/16; H05B41/18; H05B41/19; H01; H01J; H01J61/00; H01J61/02; H01J61/54; H01J61/541; H01J61/542
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
AN ELECTRIC DISCHARGE LAMP COMPRISING A VITREOUS OUTER JACKET ENCLOSING A QUARTZ ARC TUBE, SAID ARC TUBE HAVING A PAIR OF MAIN THERMIONIC ELECTRODES SEALED THEREIN AT OPPOSITE ENDS AND A STARTING ELECTRODE LOCATED ADJACENT ONE OF SAID MAIN ELECTRODES SEALED THEREIN AT ONE END, AN IONIZABLE FILLING WITHIN SAIDS ARC TUBE COMPRISING MERCURY, A METAL HALIDE, AND AN INERT STARTING GAS, MEANS SUPPORTING SAID ARC TUBE WITHIN SAID OUTER JACKET AND PROVIDING CIRCUIT CONNECTIONS TO SAID MAIN ELECTRODES, MEANS INCLUDING A CURRENT LIMITING RESISTOR WITHIN SAID OUTER JACKET CONNECTING SAID STARTING ELECTRODE TO THE MAIN ELECTRODE AT THE OPPOSITE END OF THE ARC TUBE, AND A THERMAL SWITCH ACTUATED BY THE HEAT OF SAID ARC TUBE DURING NORMAL OPERATION AND ARRANGED TO SHORT-CIRCUIT THE STARTING ELECTRODE TO THE ADJACENT MAIN ELECTRODE WHEN ACTUATED.
Claim 2
Dependent Claim
134 words
AN ELECTRIC DISCHARGE LAMP COMPRISING A VITREOUS OUTER JACKET ENCLOSING A QUARTZ ARC TUBE, SAID ARC TUBE HAVING A PAIR OF MAIN THERMIONIC ELECTRODES SEALED THEREIN AT OPPOSITE ENDS AND A STARTING ELECTRODE LOCATED ADJACENT ONE OF SAID MAIN ELECTRODES SEALED THEREIN AT ONE END, AN IONIZABLE FILLING WITHIN SAIDS ARC TUBE COMPRISING MERCURY, A METAL HALIDE, AND AN INERT STARTING GAS, MEANS SUPPORTING SAID ARC TUBE WITHIN SAID OUTER JACKET AND PROVIDING CIRCUIT CONNECTIONS TO SAID MAIN ELECTRODES, MEANS INCLUDING A CURRENT LIMITING RESISTOR WITHIN SAID OUTER JACKET CONNECTING SAID STARTING ELECTRODE TO THE MAIN ELECTRODE AT THE OPPOSITE END OF THE ARC TUBE, AND A THERMAL SWITCH ACTUATED BY THE HEAT OF SAID ARC TUBE DURING NORMAL OPERATION AND ARRANGED TO SHORT-CIRCUIT THE STARTING ELECTRODE TO THE ADJACENT MAIN ELECTRODE WHEN ACTUATED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |