US3665497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron multiplier with preamplifier
Assignee: Bendix Corp
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Filing: 1969-12-18
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Granted: 1972-05-23
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Expires: 1989-12-18
Abstract
Abstract A spiraled electron multiplier assembly fabricated of six twisted channels fused into a solid bundle or array, the input section of the electron multiplier being provided with a flared input section formed of a straight channel portion and a flared input portion integrally formed therewith. The input section is assembled with a spiraled multiplier section by means of a collar-like or tab-like electrode for establishing a voltage potential at the output section of the flared section and the input to the multiplier section, the flared input section being slightly spaced from the spiraled electron multiplier.
Inventors
- 👤 Bagdasar Deradorian
- 👤 James Svenson
- 👤 Raymond Nalepka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:03
CPC Classifications
H; H01; H01J; H01J43/00; H01J43/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
105 words
An electron multiplier assembly including a multi-channel electron multiplier section, said assembly comprising: a single channel electron multiplier preamplifier means positioned, relative to the path of an occurrence, ahead of the electron multiplier section; said preamplifier having an integrally formed flared input portion, said preamplifier being removable from said multi-channel multiplier section so that the area and configuration of the input surface to said multi-channel multiplier is variable, said preamplifier section being positioned to have an output end in the close proximity of the input end of said multi-channel multiplier section; and means for establishing an accelerating field within said preamplifier and multi-channel electron multiplier.
Claim 2
Dependent Claim
105 words
An electron multiplier assembly including a multi-channel electron multiplier section, said assembly comprising: a single channel electron multiplier preamplifier means positioned, relative to the path of an occurrence, ahead of the electron multiplier section; said preamplifier having an integrally formed flared input portion, said preamplifier being removable from said multi-channel multiplier section so that the area and configuration of the input surface to said multi-channel multiplier is variable, said preamplifier section being positioned to have an output end in the close proximity of the input end of said multi-channel multiplier section; and means for establishing an accelerating field within said preamplifier and multi-channel electron multiplier.
Claim 3
Dependent Claim
42 words
The improvement of claim 1 further including a metal terminal having a generally round portioN and an elongated tab portion, said round portion being attached to said input and output portions to support said pre-amplifier relative to said multi-channel electron multiplier section.
Claim 4
Dependent Claim
30 words
The electron multiplier of claim 1 wherein said preamplifier means has an inside diameter approximately equal to the diameter of a circle circumscribing all channels of said multi-channel multiplier section.
Claim 5
Dependent Claim
24 words
The electron multiplier of claim 1 wherein said preamplifier means has a length which exceeds its diameter by at least an order of magnitude.
Claim 6
Dependent Claim
20 words
The electron multiplier of claim 1 wherein said preamplifier has a length in the order of twenty times its diameter.
References Cited (Backward Citations)
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US3341730A
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US3176178A
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US3244922A
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US3387137A
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US3506868A
Cited
US3407324A
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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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |