US3408532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam scanning device
Assignee: Northrop Grumman Corp
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Filing: 1965-12-06
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Granted: 1968-10-29
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Expires: 1985-12-06
Abstract
No abstract record available.
Inventors
- 👤 Donald E Hultberg
- 👤 Lester A Jeffries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:38
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/72; H01J29/74; G; G09; G09G; G09G1/00; G09G1/20; G11; G11C; G11C11/00; G11C11/21; G11C11/23; H01J29/467; H01J43/00; H01J43/04; H01J43/06; H01J43/18; H01J43/20; H01J43/24; H01J43/243; H03; H03M; H03M1/00; H03M1/66; H03M1/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
AN ELECTRON BEAM SCANNING DEVICE COMPRISING A GAS EVACUATED SEALED CASING MEMBER, AN ELECTRON SOURCE MOUNTED WITHIN SAID CASING MEMBER, A TARGET MEMBER MOUNTED WITHIN SAID CASING MEMBER OPPOSITE SAID ELECTRON SOURCE, A POWER SOURCE CONNECTED BETWEEN SAID TARGET MEMBER AND SAID ELECTRON SOURCE FOR PROVIDING AN ELECTRON ACCELERATING POTENTIAL THEREBETWEEN, A PLURALITY OF DYNODE MEMBER SANDWICHED BETWEEN SAID ELECTRON SOURCE AND SAID TARGET MEMBER FOR CONTROLLING THE FLOW OF ELECTRONS THEREBETWEEN, SAID ELECTRON SOURCE, SAID TARGET MEMBER AND SAID DYNODE MEMBER BEING ALINED OPPOSITE EACH OTHER, SAID DYNODE MEMBERS EACH HAVING A PLURALITY OF CONDUCTIVE CODED FINGER PORTIONS WHICH ARE INSULATED FROM EACH OTHER, SAID DYNODE MEMERS FURTHER EACH HAVING A PLURALITY OF APERTURE MEANS FORMED THEREIN FOR CHANNELING THE FLOW OF ELECTRONS BETWEEN SAID ELECTRON SOURCE AND SAID TARGET MEMBER, AND CONTROL MEANS OR SELECTIVELY APPLYING AN ELECTRON ACCELERATING POTENTIAL TO AT LEAST ONE OF THE FINGER PORTIONS OF EACH OF SAID DYNODE MEMBERS AND AN ELECTRON REPELLING POTENTIAL TO THE OTHERS OF THE FINGER PORTIONS OF EACH OF SAID DYNODE MEMBERS, WHEREBY SAID DYNODE MEMBERS CAUSE AN ELECTRON BEAM FROM SAID ELECTRON SOURCE TO SAID TARGET MEMBER TO BE ADDRESSED IN RESPONSE TO SAID CONTROL MEANS.
Claim 2
Dependent Claim
199 words
AN ELECTRON BEAM SCANNING DEVICE COMPRISING A GAS EVACUATED SEALED CASING MEMBER, AN ELECTRON SOURCE MOUNTED WITHIN SAID CASING MEMBER, A TARGET MEMBER MOUNTED WITHIN SAID CASING MEMBER OPPOSITE SAID ELECTRON SOURCE, A POWER SOURCE CONNECTED BETWEEN SAID TARGET MEMBER AND SAID ELECTRON SOURCE FOR PROVIDING AN ELECTRON ACCELERATING POTENTIAL THEREBETWEEN, A PLURALITY OF DYNODE MEMBER SANDWICHED BETWEEN SAID ELECTRON SOURCE AND SAID TARGET MEMBER FOR CONTROLLING THE FLOW OF ELECTRONS THEREBETWEEN, SAID ELECTRON SOURCE, SAID TARGET MEMBER AND SAID DYNODE MEMBER BEING ALINED OPPOSITE EACH OTHER, SAID DYNODE MEMBERS EACH HAVING A PLURALITY OF CONDUCTIVE CODED FINGER PORTIONS WHICH ARE INSULATED FROM EACH OTHER, SAID DYNODE MEMERS FURTHER EACH HAVING A PLURALITY OF APERTURE MEANS FORMED THEREIN FOR CHANNELING THE FLOW OF ELECTRONS BETWEEN SAID ELECTRON SOURCE AND SAID TARGET MEMBER, AND CONTROL MEANS OR SELECTIVELY APPLYING AN ELECTRON ACCELERATING POTENTIAL TO AT LEAST ONE OF THE FINGER PORTIONS OF EACH OF SAID DYNODE MEMBERS AND AN ELECTRON REPELLING POTENTIAL TO THE OTHERS OF THE FINGER PORTIONS OF EACH OF SAID DYNODE MEMBERS, WHEREBY SAID DYNODE MEMBERS CAUSE AN ELECTRON BEAM FROM SAID ELECTRON SOURCE TO SAID TARGET MEMBER TO BE ADDRESSED IN RESPONSE TO SAID CONTROL MEANS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |