Patent US3102212A successfully refreshed from Google Patents.
US3102212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube with low velocity deflection and post deflection beam acceleration
Assignee: Motorola Solutions Inc
•
Filing: 1959-04-24
•
Granted: 1963-08-27
•
Expires: 1979-04-24
Abstract
No abstract record available.
Inventors
- 👤 Schlesinger Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:43
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A CATHODE RAY TUBE INCLUDING IN COMBINATION A VIEWING SCREEN ADAPTED TO BE MAINTAINED AT A RELATIVELY HIGH POTENTIAL, AN ANODE ADAPTED TO BE MAINTAINED AT A RELATIVELY LOW FIXED POTENTIAL, AN ELECTRON BEAM SOURCE CONSTRUCTED TO DIRECT A BEAM THROUGH SAID ANODE SO THAT THE BEAM IMPINGES UPON SAID VIEWING SCREEN, DEFLECTING MEANS FOR SCANNING SAID BEAM ACROSS SAID VIEWING SCREEN, A COMPOSITE APERTURED ELECTRODE SEPARATING THE HIGH AND LOW PONTENTIAL SPACES THROUGH WHICH THE BEAM PASSES, SAID ELECTRODE COMPRISING A CONDUCTIVE PORTION FACING SAID VIEWING SCREEN AND AN INSULATING COATING ON SAID CONDUCTOR PORTION FACING THE LOW POTENTIAL SPACE AND HAVING A LAYER WITH HIGH SECONDARY ELECTRON EMISSIVE PROPERTIES, A CONDUCTING GRID MAINTAINED AT SAID FIXED LOW POTENTIAL OF SAID ANODE IN SAID LOW POTENTIAL SPACE ADJACENT SAID INSULATING COATING, SAID EMISSIVE LAYER OF SAID ELECTRODE BEING ADAPTED TO EMIT ELECTRONS TO SAID CONDUCTING GRID AS THE BEAM PASSES THROUGH SAID APERTURED ELECTRODE SO
Claim 2
Dependent Claim
156 words
A CATHODE RAY TUBE INCLUDING IN COMBINATION A VIEWING SCREEN ADAPTED TO BE MAINTAINED AT A RELATIVELY HIGH POTENTIAL, AN ANODE ADAPTED TO BE MAINTAINED AT A RELATIVELY LOW FIXED POTENTIAL, AN ELECTRON BEAM SOURCE CONSTRUCTED TO DIRECT A BEAM THROUGH SAID ANODE SO THAT THE BEAM IMPINGES UPON SAID VIEWING SCREEN, DEFLECTING MEANS FOR SCANNING SAID BEAM ACROSS SAID VIEWING SCREEN, A COMPOSITE APERTURED ELECTRODE SEPARATING THE HIGH AND LOW PONTENTIAL SPACES THROUGH WHICH THE BEAM PASSES, SAID ELECTRODE COMPRISING A CONDUCTIVE PORTION FACING SAID VIEWING SCREEN AND AN INSULATING COATING ON SAID CONDUCTOR PORTION FACING THE LOW POTENTIAL SPACE AND HAVING A LAYER WITH HIGH SECONDARY ELECTRON EMISSIVE PROPERTIES, A CONDUCTING GRID MAINTAINED AT SAID FIXED LOW POTENTIAL OF SAID ANODE IN SAID LOW POTENTIAL SPACE ADJACENT SAID INSULATING COATING, SAID EMISSIVE LAYER OF SAID ELECTRODE BEING ADAPTED TO EMIT ELECTRONS TO SAID CONDUCTING GRID AS THE BEAM PASSES THROUGH SAID APERTURED ELECTRODE SO
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) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |