US3308325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam tube with ion shield
Assignee: Bendix Balzers Vacuum Inc
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Filing: 1963-08-15
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Granted: 1967-03-07
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Expires: 1983-08-15
Abstract
No abstract record available.
Inventors
- 👤 Gaydou Francois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:42
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/24; H01J37/04; H01J37/06; H01J37/09; H01J37/30; H01J37/301
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
IN AN ELECTRON BEAM APPARATUS FOR MELTING, VAPORIZING OR MACHINING MATERIAL IN AN EVACUABLE WORK CHAMBER HAVING A CONDUCTIVE WALL, A CATHODE: MEANS FOR CONNECTING SAID CATHODE WITH A POTENTIAL WHICH IS HIGHLY NEGATIVE WITH RESPECT TO THE WALLS OF THE WORK CHAMBER; AN APERTURED ACCELERATION ELECTRODE COMPRISING A FLAT PLATE SPACED FROM SAID CATHODE; A CYLINDRICAL SHAPED ION SCREEN ELECTRODE INTEGRALLY AND ELECTRICALLY CONNECTED TO SAID ACCELERATION ELECTRODE ABOUT SAID APERTURE ON A SIDE AWAY FROM SAID CATHODE WITH THE AXIS OF SAID ION SCREEN ELECTRODE PARALLEL TO THE ELECTRON BEAM; INSULATING MEANS FOR MOUNTING INTEGRAL CONNECTED ASSEMBLY CONSISTING OF SAID ACCELERATION ELECTRODE AND SAID ION SCREEN ELECTRODE; MEANS FOR CONNECTING SAID ACCELERATION AND ION SCREEN ELECTRODES WITH A POTENTIAL WHICH IS POSITIVE WITH RESPECT TO THE WALLS OF THE WORK CHAMBER.
Claim 2
Dependent Claim
133 words
IN AN ELECTRON BEAM APPARATUS FOR MELTING, VAPORIZING OR MACHINING MATERIAL IN AN EVACUABLE WORK CHAMBER HAVING A CONDUCTIVE WALL, A CATHODE: MEANS FOR CONNECTING SAID CATHODE WITH A POTENTIAL WHICH IS HIGHLY NEGATIVE WITH RESPECT TO THE WALLS OF THE WORK CHAMBER; AN APERTURED ACCELERATION ELECTRODE COMPRISING A FLAT PLATE SPACED FROM SAID CATHODE; A CYLINDRICAL SHAPED ION SCREEN ELECTRODE INTEGRALLY AND ELECTRICALLY CONNECTED TO SAID ACCELERATION ELECTRODE ABOUT SAID APERTURE ON A SIDE AWAY FROM SAID CATHODE WITH THE AXIS OF SAID ION SCREEN ELECTRODE PARALLEL TO THE ELECTRON BEAM; INSULATING MEANS FOR MOUNTING INTEGRAL CONNECTED ASSEMBLY CONSISTING OF SAID ACCELERATION ELECTRODE AND SAID ION SCREEN ELECTRODE; MEANS FOR CONNECTING SAID ACCELERATION AND ION SCREEN ELECTRODES WITH A POTENTIAL WHICH IS POSITIVE WITH RESPECT TO THE WALLS OF THE WORK CHAMBER.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |