Patent US3849644A successfully refreshed from Google Patents.
US3849644A
Expired / Lapsed
US
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Electron discharge device having ellipsoid-shaped electrode surfaces
Assignee: RCA Corp
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Filing: 1973-03-28
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Granted: 1974-11-19
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Expires: 1993-03-28
Abstract
Abstract An electron discharge device with a series of electrodes, one or more having an interior ellipsoid-shaped cavity wall surface, a portion of which is formed of, or coated with, electron emissive material. Electron communication from or to a preceding or succeeding electrode, respectively, is provided through an input aperture and an output aperture, respectively, in each of the interior ellipsoid-shaped cavity wall surfaces. Various means of accelerating electrons, emitted from each ellipsoid shaped cavity wall surface, through the output aperture thereon, to the succeeding electrode are provided.
Inventors
- 👤 J Ibaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:57
CPC Classifications
H; H01; H01J; H01J43/00; H01J43/04; H01J43/06; H01J43/18; H01J43/26
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
150 words
An electron discharge device comprising: a. a staggered series of electrically disconnected electrodes, each of said electrodes including: i. a cavity within its interior substantially surrounded and enclosed by an ellipsoid-shaped electrode wall surface with an electron emissive peripheral portion thereon, ii. an input aperture through which an input energy source may be focused to impinge upon The electron emissive peripheral portion of said ellipsoid-shaped electrode wall surface, iii. an output aperture through which electrons emitted from said electron emissive peripheral portion may be accelerated for egression out of said electrode, said input and output apertures being arranged in staggered angular relation to each other, and b. means for restrictingly accelerating electrons emitted from immediately preceeding electrodes to succeeding electrodes of said series, in sequence, said means comprising an electron permeable electrostatic electron accelerating member internesting within the output aperture of an immediately preceeding electrode and positioned intimately adjacent thereto.
Claim 2
Dependent Claim
150 words
An electron discharge device comprising: a. a staggered series of electrically disconnected electrodes, each of said electrodes including: i. a cavity within its interior substantially surrounded and enclosed by an ellipsoid-shaped electrode wall surface with an electron emissive peripheral portion thereon, ii. an input aperture through which an input energy source may be focused to impinge upon The electron emissive peripheral portion of said ellipsoid-shaped electrode wall surface, iii. an output aperture through which electrons emitted from said electron emissive peripheral portion may be accelerated for egression out of said electrode, said input and output apertures being arranged in staggered angular relation to each other, and b. means for restrictingly accelerating electrons emitted from immediately preceeding electrodes to succeeding electrodes of said series, in sequence, said means comprising an electron permeable electrostatic electron accelerating member internesting within the output aperture of an immediately preceeding electrode and positioned intimately adjacent thereto.
Claim 3
Dependent Claim
22 words
An electron discharge device as recited in claim 1, wherein said ellipsoid-shaped electrode wall surface comprises: a spherically shaped electrode wall surface.
Claim 4
Dependent Claim
24 words
a light permeable electrostatic grid disposed adjacent and across said input aperture, whereby photoelectrons, are restricted in their egression out through said input aperture.
Claim 5
Dependent Claim
24 words
a light permeable electrostatic grid disposed adjacent and across said input aperture, whereby photoelectrons, are restricted in their egression out through said input aperture.
Claim 6
Dependent Claim
13 words
a photoemissive surface on a portion of said spherically shaped electrode wall surface,
Claim 7
Dependent Claim
13 words
a photoemissive surface on a portion of said spherically shaped electrode wall surface,
Claim 8
Dependent Claim
43 words
an electron emissive surface on a portion of said ellipsoid-shaped electrode wall surface, b. a restricted means of successive electron communication in sequence between: said source of electrons, successive ones of said electRon emissive surfaces of said dynodes, and said collector of electrons.
Claim 9
Dependent Claim
43 words
an electron emissive surface on a portion of said ellipsoid-shaped electrode wall surface, b. a restricted means of successive electron communication in sequence between: said source of electrons, successive ones of said electRon emissive surfaces of said dynodes, and said collector of electrons.
Claim 10
Dependent Claim
42 words
an input aperture in said spherically shaped electrode wall surface thereby light may be directed upon said photoemissive surface on a portion of said internally disposed spherically shaped surface, b. a restricted means of communicating said photoelectrons to a succeeding dynode comprising:
Claim 11
Dependent Claim
42 words
an input aperture in said spherically shaped electrode wall surface thereby light may be directed upon said photoemissive surface on a portion of said internally disposed spherically shaped surface, b. a restricted means of communicating said photoelectrons to a succeeding dynode comprising:
Claim 12
Dependent Claim
149 words
An electron multiplier of the type having at least one dynode stage for multiplying electrons, and an anode for collecting multiplied electrons, the improvement therein comprising that said dynode stage comprises: a. a dynode electrode having: i. a cavity within its interior substantially surrounded and enclosed by a spherically shaped electrode wall surface with an electron emissive peripheral portion thereon, ii. an input aperture in said dynode through which electrons may be accelerated to impinge upon said electron emissive peripheral portion thereby causing the emission of electrons therefrom, iii. an output aperture in said dynode through which electrons emitted from said electron emissive peripheral portion may be accelerated for egression out of said dynode, said input and output apertures being arranged in staggered angular relation to each other, and b. means for accelerating emitted electrons to a succeeding electrode along the electron multiplier chain, disposed adjacent said output aperture.
Claim 13
Dependent Claim
149 words
An electron multiplier of the type having at least one dynode stage for multiplying electrons, and an anode for collecting multiplied electrons, the improvement therein comprising that said dynode stage comprises: a. a dynode electrode having: i. a cavity within its interior substantially surrounded and enclosed by a spherically shaped electrode wall surface with an electron emissive peripheral portion thereon, ii. an input aperture in said dynode through which electrons may be accelerated to impinge upon said electron emissive peripheral portion thereby causing the emission of electrons therefrom, iii. an output aperture in said dynode through which electrons emitted from said electron emissive peripheral portion may be accelerated for egression out of said dynode, said input and output apertures being arranged in staggered angular relation to each other, and b. means for accelerating emitted electrons to a succeeding electrode along the electron multiplier chain, disposed adjacent said output aperture.
Claim 14
Dependent Claim
28 words
An electron multiplier as recited in claim 3, wherein said dynode electrode further comprises: a plurality of mating submembers with partial aligned cavities together defining said interior cavity.
Claim 15
Dependent Claim
29 words
An electron multiplier as recited in claim 4, wherein at least one of said mating submembers additionally comprises: a means for mounting said dynode internal of said electron multiplier.
Claim 16
Dependent Claim
31 words
An electron multiplier as recited in claim 3, wherein: said spherically shaped electrode wall surface has a copper-berylium composition, and said electron emissive peripheral portion comprises an oxidized form of copper-berylium.
Claim 17
Dependent Claim
67 words
An electron multiplier as recited in claim 3, including a plurality of dynode stages, wherein the means for accelerating emitted electrons in sequence between succeeding dynode electrodes along the electron multiplier chain comprises: the input aperture of a succeeding dynode electrode having a dimensionally smaller opening than the output aperture of the preceeding dynode electrode, and wherein said apertures are adjacently aligned to permit electron acceleration therethrough.
Claim 18
Dependent Claim
20 words
An electron multiplier as recited in claim 3, wherein said means for accelerating emitted electrons comprises: an electron permeable grid.
Claim 19
Dependent Claim
60 words
An electron tube comprising an electron multiplier of the type having a plurality of electrodes including a source of electrons, a collector of multiplied electrons, and a staggered series of electrically disconnected dynodes, for successively multiplying electrons, disposed intermediate said source of electrons and said collector of electrons, the improvement therein comprising: a. at least one of said dynodes having:
Claim 20
Dependent Claim
60 words
An electron tube comprising an electron multiplier of the type having a plurality of electrodes including a source of electrons, a collector of multiplied electrons, and a staggered series of electrically disconnected dynodes, for successively multiplying electrons, disposed intermediate said source of electrons and said collector of electrons, the improvement therein comprising: a. at least one of said dynodes having:
Claim 21
Dependent Claim
17 words
A tube defined in claim 9, wherein said ellipsoid-shaped electrode wall surface comprises: a spherically shaped surface.
Claim 22
Dependent Claim
109 words
A tube defined in claim 9, wherein said restricted means of successive electron communciation comprises: a. an output aperture in each of said dynodes through which electrons may be accelerated for egression out of said dynode, and b. an input aperture in each of said dynodes, at least one of said input apertures having a dimensionally smaller opening than the output aperture of the preceding electrode and positioned in aligned internesting relation thereto whereby electrons may be accelerated through said input aperture, from a preceeding electron emissive surface, to impinge upon its electron emissive surface, said input and output apertures being arranged in staggered angular relation to each other.
Claim 23
Dependent Claim
88 words
A tube defined in claim 9, wherein said restricted means of electron communication comprises: a. an output aperture in each of said dynodes through which electrons may be accelerated for egression out of said dynode, b. an input aperture in each of said dynodes through which electrons may be accelerated, from a preceding electron emissive surface, to impinge upon its electron emissive surface, said input and output apertures being arranged in staggered angular relation to each other, and c. an electron permeable grid disposed adjaent said input aperture.
Claim 24
Dependent Claim
27 words
A tube defined in claim 9, wherein each of said dynodes further comprises: a plurality of mating submembers with aligned partial cavities together defining said interior cavity.
Claim 25
Dependent Claim
49 words
A photomultiplier tube of the type having a source of photoelectrons; a collector of multiplied electrons; and a staggered series of electrically disconnected dynodes, for successively multiplying electrons, disposed intermediate said source of photoelectrons and said collector of electrons, the improvement therein comprising: a. said source of photoelectrons having:
Claim 26
Dependent Claim
49 words
A photomultiplier tube of the type having a source of photoelectrons; a collector of multiplied electrons; and a staggered series of electrically disconnected dynodes, for successively multiplying electrons, disposed intermediate said source of photoelectrons and said collector of electrons, the improvement therein comprising: a. said source of photoelectrons having:
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US3183390A
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US3349273A
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US3684910A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |