Patent US4980576A successfully refreshed from Google Patents.
Patent US3268758A successfully refreshed from Google Patents.
US3268758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow gas arc discharge device utilizing an off-center cathode
Assignee: Individual
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Filing: 1964-05-13
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Granted: 1966-08-23
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Expires: 1984-05-13
Abstract
No abstract record available.
Inventors
- 👤 John W Flowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:47
CPC Classifications
H; H01; H01T; H01T1/00; H01J; H01J37/00; H01J37/32; H01J37/32431; H01J37/32532; H01J37/32596; H05; H05H; H05H1/00; H05H1/24; H05H1/48; H05H1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
MEANS FOR ESTABLISHING A HOLLOW CYLINDRICAL ARC DISCHARGE COMPRISING AN ELONGATED EVACUATED CHAMBER, A HOLLOW CATHODE MOUNTED IN ONE END OF SAID CHAMBER, A REFLECTOR ELECTRODE MOUNTED WITHIN THE OTHER END OF SAID CHAMBER, AN ELONGATED, HOLLOW ANODE POSITIONED WITHIN SAID CHAMBER BETWEEN SAID CATHODE AND SAID REFLECTOR ELECTRODE TO PROVIDE A RADIAL ELECTRIC FIELD COMPONENT THEREWITHIN, SAID CHAMBER AND ANODE HAVING COMMON AXIS, A SOURCE OF FEED GAS, MEANS FOR FEEDING GAS FROM SAID SOURCE INTO THE INTERIOR OF SAID CATHODE AT A CONTROLLED RATE, MEANS FOR PROVIDING A MAGNETIC FIELD PARALLEL TO SAID COMMON AXIS, A SOURCE OF OPERATING POTENTIAL CONNECTED BETWEEN SAID ANODE AND CATHODE, SAID CATHODE BEING MOUNTED BETWEEN A SELECTED DISTANCE FROM SAID COMMON AXIS SUCH THAT THE AXIS OF SAID CATHODE IS SPACED FROM AND PARALLEL TO SAID COMMON AXIS TO ESTABLISH AN OFFCENTER REFLUXING ARC DISCHARGE PARALLEL TO SAID MAGNETIC FIELD AND BETWEEN SAID CATHODE AND SAID REFLECTOR ELECTRODE, SAID DISCHARGE BEING CAUSED TO ROTATIONALLY DRIFT BY SAID RADIAL COMPONENT OF ELECTROC FIELD TO THEREBY FORM SAID HOLLOW DISCHARGE SYMMETRICAL ABOUT SAID COMMON AXIS AND WITHIN SAID HOLLOW ANODE.
Claim 2
Dependent Claim
186 words
MEANS FOR ESTABLISHING A HOLLOW CYLINDRICAL ARC DISCHARGE COMPRISING AN ELONGATED EVACUATED CHAMBER, A HOLLOW CATHODE MOUNTED IN ONE END OF SAID CHAMBER, A REFLECTOR ELECTRODE MOUNTED WITHIN THE OTHER END OF SAID CHAMBER, AN ELONGATED, HOLLOW ANODE POSITIONED WITHIN SAID CHAMBER BETWEEN SAID CATHODE AND SAID REFLECTOR ELECTRODE TO PROVIDE A RADIAL ELECTRIC FIELD COMPONENT THEREWITHIN, SAID CHAMBER AND ANODE HAVING COMMON AXIS, A SOURCE OF FEED GAS, MEANS FOR FEEDING GAS FROM SAID SOURCE INTO THE INTERIOR OF SAID CATHODE AT A CONTROLLED RATE, MEANS FOR PROVIDING A MAGNETIC FIELD PARALLEL TO SAID COMMON AXIS, A SOURCE OF OPERATING POTENTIAL CONNECTED BETWEEN SAID ANODE AND CATHODE, SAID CATHODE BEING MOUNTED BETWEEN A SELECTED DISTANCE FROM SAID COMMON AXIS SUCH THAT THE AXIS OF SAID CATHODE IS SPACED FROM AND PARALLEL TO SAID COMMON AXIS TO ESTABLISH AN OFFCENTER REFLUXING ARC DISCHARGE PARALLEL TO SAID MAGNETIC FIELD AND BETWEEN SAID CATHODE AND SAID REFLECTOR ELECTRODE, SAID DISCHARGE BEING CAUSED TO ROTATIONALLY DRIFT BY SAID RADIAL COMPONENT OF ELECTROC FIELD TO THEREBY FORM SAID HOLLOW DISCHARGE SYMMETRICAL ABOUT SAID COMMON AXIS AND WITHIN SAID HOLLOW ANODE.
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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |