Patent US3239664A successfully refreshed from Google Patents.
US3239664A
Expired / Lapsed
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Charged particle beam current measuring device
Assignee: High Voltage Engineering Corp
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Filing: 1963-04-23
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Granted: 1966-03-08
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Expires: 1983-04-23
Abstract
No abstract record available.
Inventors
- 👤 Sherman R Farrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:12
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/29; G01T1/16; G01T1/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A SECONDARY EMISSION MONITOR ADAPTED TO SELECTIVELY MEASURE PEAK AND AVERAGE CURRENT IN A HIGH ENERGY CHARGED PARTICLE BEAM COMPRISING A COLLECTOR MEMBER, AN EMITTER MEMBER OF ELECTRON EMISSIVE MATERIAL HAVING DENSITY CHARACTERISTICS ADAPTED TO PERMIT THE PASSAGE OF A HIGH ENERGY CHARGED PARTICLE BEAM THERETHROUGH INSULATED FROM AND ENCLOSING SAID COLLECTOR MEMBER, SAID EMITTER MEMBER HAVING A SURFACE AREA THAT IS LARGE WITH RESPECT TO THE SURFACE AREA OF SAID COLLECTOR MEMBER, MEANS FOR APPLYING A BIAS VOLTAGE TO SAID EMITTER MEMBER, AND MEANS FOR MEASURING CURRENT FLOWING IN SAID COLLECTOR MEMBER.
Claim 2
Dependent Claim
93 words
A SECONDARY EMISSION MONITOR ADAPTED TO SELECTIVELY MEASURE PEAK AND AVERAGE CURRENT IN A HIGH ENERGY CHARGED PARTICLE BEAM COMPRISING A COLLECTOR MEMBER, AN EMITTER MEMBER OF ELECTRON EMISSIVE MATERIAL HAVING DENSITY CHARACTERISTICS ADAPTED TO PERMIT THE PASSAGE OF A HIGH ENERGY CHARGED PARTICLE BEAM THERETHROUGH INSULATED FROM AND ENCLOSING SAID COLLECTOR MEMBER, SAID EMITTER MEMBER HAVING A SURFACE AREA THAT IS LARGE WITH RESPECT TO THE SURFACE AREA OF SAID COLLECTOR MEMBER, MEANS FOR APPLYING A BIAS VOLTAGE TO SAID EMITTER MEMBER, AND MEANS FOR MEASURING CURRENT FLOWING IN SAID COLLECTOR MEMBER.
References Cited (Backward Citations)
US3028517A
Cited
US3098944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |