US3270233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural beam electron gun
Assignee: WC Heraus GmbH and Co KG
•
Filing: 1962-08-21
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Granted: 1966-08-30
•
Expires: 1982-08-21
Abstract
No abstract record available.
Inventors
- 👤 Dietrich Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:08
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/04; H01J37/06; H01J37/30; H01J37/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN AN ELECTRON GUN COMPRISING A HOT CATHODE, AN ANODE HAVING A PLURALITY OF APERTURES LATERALLY ADJACENT BUT SPACED FROM EACH OTHER AT ONE SIDE OF SAID HOT CATHODE, A FOCUSING ELECTRODE INTERPOSED BETWEEN SAID HOT CATHODE AND SAID ANODE, SAID ELECTRODE HAVING A PLURALITY OF APERTURES SUBSTANTIALLY IN AXIAL ALIGNMENT WITH THE CORRESPONDING APERTURES IN SAID ANODE FOR PASSING SEPARATE ELECTRON BEAMS FROM SAID HOT CATHODE THROUGH THE DIFFERENT ALIGNED APERTURES, AND A PLURALITY OF ELECTROMAGNETS AT THE OTHER SIDE OF SAID ANODE EACH HAVING A COIL AND A FERROMAGNETIC CORE, THE OPPOSITE ENDS OF ADJACENT CORES BEING SPACED FROM EACH OTHER TO FORM GAPS SUBSTANTIALLY IN ALIGNMENT WITH SAID APERTURES FOR FORMING MAGNETIC FIELDS FOR INDEPENDENTLY DEFLECTING EACH OF SAID ELECTRON BEAMS PASSING THROUGH SAID APERTURES IN SAID FOCUSING ELECTRODE AND ANODE AND THEN THROUGH SAID GAPS.
Claim 2
Dependent Claim
139 words
IN AN ELECTRON GUN COMPRISING A HOT CATHODE, AN ANODE HAVING A PLURALITY OF APERTURES LATERALLY ADJACENT BUT SPACED FROM EACH OTHER AT ONE SIDE OF SAID HOT CATHODE, A FOCUSING ELECTRODE INTERPOSED BETWEEN SAID HOT CATHODE AND SAID ANODE, SAID ELECTRODE HAVING A PLURALITY OF APERTURES SUBSTANTIALLY IN AXIAL ALIGNMENT WITH THE CORRESPONDING APERTURES IN SAID ANODE FOR PASSING SEPARATE ELECTRON BEAMS FROM SAID HOT CATHODE THROUGH THE DIFFERENT ALIGNED APERTURES, AND A PLURALITY OF ELECTROMAGNETS AT THE OTHER SIDE OF SAID ANODE EACH HAVING A COIL AND A FERROMAGNETIC CORE, THE OPPOSITE ENDS OF ADJACENT CORES BEING SPACED FROM EACH OTHER TO FORM GAPS SUBSTANTIALLY IN ALIGNMENT WITH SAID APERTURES FOR FORMING MAGNETIC FIELDS FOR INDEPENDENTLY DEFLECTING EACH OF SAID ELECTRON BEAMS PASSING THROUGH SAID APERTURES IN SAID FOCUSING ELECTRODE AND ANODE AND THEN THROUGH SAID GAPS.
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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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |