Patent US3266241A successfully refreshed from Google Patents.
Patent US2761086A successfully refreshed from Google Patents.
US2761086A
Expired / Lapsed
US
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Electric discharge lamp
Assignee: General Electric Co
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Filing: 1952-08-29
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Granted: 1956-08-28
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Expires: 1972-08-29
Abstract
No abstract record available.
Inventors
- 👤 Edward B Noel
- 👤 Jr John I Falconer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:51
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/12; H01J61/18; H01J61/20; H01J61/82; H01J61/822
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A HIGH PRESSURE GASEOUS ELECTRIC DISCHARGE LAMP FORMING A LINE SOURCE OF RADIATION COMPRISING AN ELONGATED TUBULAR ENVELOPE HAVING A LENGTH AT LEAST 15 TIMES ITS DIAMETER AND HAVING DIAMETER VARIATIONS GREATER THAN 2% OCCURING ALONG THE LENGTH OF SAID LAMP WITH A CYCLE EXTENDING OVER AT LEAST 15 DIAMETERS AND THE INTERNAL DIAMETER OF SAID ENVELOPE BEING IN RANGE OF APPROXIMATELY 10 TO 25 MILLIMETERS, A PAIR OF ELECTRODES SEALED INTO OPPOSITE ENDS OF THE ENVELOPE, AND AN IONIZABLE ATMOSPHERE THEREIN COMPRISING A STARTING GAS AND MERCURY VAPOR, THE QUANTITY OF SAID STARTING GAS BEING PRONORTIONED SUCH THAT ITS PARTIAL PRESSURE AT THE OPERATING TEMPERATURE OF THE LAMP IS A SUBSTANTIAL FRACTION OF THE TOTAL PRESSURE EXERTED BY THE SAID STARGING GAS AND THE MERCURY VAPOR, THE SAID STARTING GAS COMPRISING PREDOMINANTLY AN INERT GAS HAVING A THERMAL CONDUCTIVITY LESS THAN THAT OF ARGON WHEREBY THE RADIANT OUTPUT IS SUBSTANTIALLY UNIFORM PER UNIT LENGTH OF LAMP IRRESPECTIVELY OF THE SAID VARIATIONS IN ENVELOPE DIAMETER.
Claim 2
Dependent Claim
165 words
A HIGH PRESSURE GASEOUS ELECTRIC DISCHARGE LAMP FORMING A LINE SOURCE OF RADIATION COMPRISING AN ELONGATED TUBULAR ENVELOPE HAVING A LENGTH AT LEAST 15 TIMES ITS DIAMETER AND HAVING DIAMETER VARIATIONS GREATER THAN 2% OCCURING ALONG THE LENGTH OF SAID LAMP WITH A CYCLE EXTENDING OVER AT LEAST 15 DIAMETERS AND THE INTERNAL DIAMETER OF SAID ENVELOPE BEING IN RANGE OF APPROXIMATELY 10 TO 25 MILLIMETERS, A PAIR OF ELECTRODES SEALED INTO OPPOSITE ENDS OF THE ENVELOPE, AND AN IONIZABLE ATMOSPHERE THEREIN COMPRISING A STARTING GAS AND MERCURY VAPOR, THE QUANTITY OF SAID STARTING GAS BEING PRONORTIONED SUCH THAT ITS PARTIAL PRESSURE AT THE OPERATING TEMPERATURE OF THE LAMP IS A SUBSTANTIAL FRACTION OF THE TOTAL PRESSURE EXERTED BY THE SAID STARGING GAS AND THE MERCURY VAPOR, THE SAID STARTING GAS COMPRISING PREDOMINANTLY AN INERT GAS HAVING A THERMAL CONDUCTIVITY LESS THAN THAT OF ARGON WHEREBY THE RADIANT OUTPUT IS SUBSTANTIALLY UNIFORM PER UNIT LENGTH OF LAMP IRRESPECTIVELY OF THE SAID VARIATIONS IN ENVELOPE DIAMETER.
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) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |