Patent US3639849A successfully refreshed from Google Patents.
US3639849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing a highly concentrated beam of electrons
Assignee: Individual
•
Filing: 1968-05-20
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Granted: 1972-02-01
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Expires: 1988-05-20
Abstract
Abstract The invention resides in apparatus for producing a highly concentrated electron beam. The electron beam producing apparatus is arranged to collimate the beam, and the collimated beam passes into apparatus that produces a pinched discharge having a selfmagnetic field. The pinched discharge pinches the already collimated electron beam, thus further concentrating the same.
Inventors
- 👤 Willard H Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:36
CPC Classifications
H; H05; H05H; H05H5/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
56 words
Electron beam apparatus comprising beam concentrating means for producing a pinched discharge having a self-magnetic field, and means for producing an electron beam in alignment with said pinched discharge so that the said self-magnetic field will concentrate the beam, said last-named means including means for collimating the electron beam and directing it into the pinched discharge.
Claim 2
Dependent Claim
56 words
Electron beam apparatus comprising beam concentrating means for producing a pinched discharge having a self-magnetic field, and means for producing an electron beam in alignment with said pinched discharge so that the said self-magnetic field will concentrate the beam, said last-named means including means for collimating the electron beam and directing it into the pinched discharge.
Claim 3
Dependent Claim
31 words
Electron beam apparatus as defined in claim 1 in which said last-named means comprises an anode in the form of a thin diaphragm having an aperture aligned with the pinched discharge.
Claim 4
Dependent Claim
44 words
Electron beam apparatus as defined in claim 1 in which said last-named means comprises a means for collimating the beam including a cathode which has an electrically floating discharge element and means for providing arc-over to an inside portion of the floating discharge element.
Claim 5
Dependent Claim
21 words
Electron discharge apparatus as defined in claim 1 in which said last-named means comprises a cathode having a concave discharge face.
Claim 6
Dependent Claim
28 words
Electron discharge apparatus as defined in claim 1 in which said last-named means is a tube the cross section of which decreases as it approaches the discharge end.
Claim 7
Dependent Claim
39 words
Electron discharge apparatus as defined in claim 1 in which said last-named means is a tube of conductive material partially surrounded by a tube of insulating material which latter tube projects beyond the discharge end oF the first-named tube.
Claim 8
Dependent Claim
26 words
Electron discharge apparatus as defined in claim 1 in which said last-named means comprises a tube of conducting material the discharge end of which is enlarged.
Claim 9
Dependent Claim
46 words
Electron discharge apparatus as defined in claim 1 in which the last-named means comprises a thin anode diaphragm defining an aperture aligned with the pinched discharge and cathode means for supplying electrons that pass through said anode to said pinched discharge and which are pinched thereby.
Claim 10
Dependent Claim
54 words
Electron discharge apparatus as defined in claim 1, having in addition a target for the pinched electron beam, said target comprising material of one atomic number together with material of a lower atomic number contiguous with the first named material and in the path of the electron beam which passes to the first-named material.
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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |