US3182175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam heating device
Assignee: National Research Corp
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Filing: 1962-09-24
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Granted: 1965-05-04
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Expires: 1982-09-24
Abstract
No abstract record available.
Inventors
- 👤 Clifton B Sibley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:57
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/04; H01J37/06; H01J37/067
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A SELF-ACCELERATED ELECTRON BEAM GUN FOR EMITTING A FOCUSED STREAM OF ELECTRONS TO PROVIDE INTENSE LOCAL HEATING AT A TARGET OF SMALL AREA, THE GUN COMPRISING IN COMBINATION: AN ELECTRON EMITTING CATHODE, AN ACCELERATION ANODE COMPRISING AN APERTURE, A FOCUS ELECTRODE ADAPTED TO ESTABLISH AN ELECTROSTATIC FIELD FOCUSING THE ELECTRONS TOWARD THE ANODE APERTURE AS A COHERENT BEAM, MEANS FOR ESTABLISHING A POTENTIAL DIFFERENCE ON THE ORDER OF 15-45 KILOVOLTS BETWEEN SAID CATHODE AND ANODE, MEANS FOR ADJUSTING THE RELATIVE SPACING AND ALIGNMENT OF THE CATHODE AND FOCUS ELECTRODE WHILE THE GUN IS OPERATING, AND MEANS FOR FOCUSING THE ELECTRON BEAM AFTER IT PASSES THROUGH THE ANODE APERTURE.
Claim 2
Dependent Claim
108 words
A SELF-ACCELERATED ELECTRON BEAM GUN FOR EMITTING A FOCUSED STREAM OF ELECTRONS TO PROVIDE INTENSE LOCAL HEATING AT A TARGET OF SMALL AREA, THE GUN COMPRISING IN COMBINATION: AN ELECTRON EMITTING CATHODE, AN ACCELERATION ANODE COMPRISING AN APERTURE, A FOCUS ELECTRODE ADAPTED TO ESTABLISH AN ELECTROSTATIC FIELD FOCUSING THE ELECTRONS TOWARD THE ANODE APERTURE AS A COHERENT BEAM, MEANS FOR ESTABLISHING A POTENTIAL DIFFERENCE ON THE ORDER OF 15-45 KILOVOLTS BETWEEN SAID CATHODE AND ANODE, MEANS FOR ADJUSTING THE RELATIVE SPACING AND ALIGNMENT OF THE CATHODE AND FOCUS ELECTRODE WHILE THE GUN IS OPERATING, AND MEANS FOR FOCUSING THE ELECTRON BEAM AFTER IT PASSES THROUGH THE ANODE APERTURE.
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) | 1968-05-03 | 1968-11-02 | 1969-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-03 | 1972-11-02 | 1973-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-03 | 1976-11-02 | 1977-05-04 | $7700.00 | Window Closed / Lapsed |