Patent US3247426A successfully refreshed from Google Patents.
US3247426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deflection control device for cathode ray tubes
Assignee: General Electric Co
•
Filing: 1963-01-23
•
Granted: 1966-04-19
•
Expires: 1983-01-23
Abstract
No abstract record available.
Inventors
- 👤 Svend E Havn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:29
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/72; H01J29/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A DEFLECTION UNIT FOR THE BEAM OF A CATHODE RAY TUBE COMPRISING: (A) A FERROMAGNETIC CORE OF SUBSTANTIALLY ANNULAR CROSS SECTION COAXIALLY POSITIONED ABOUT THE NECK OF SAID TUBE, (B) DIAMETRICALLY DISPOSED AIR GAPS IN SAID CORE, (C) A COIL OPERATIVELY ASSOCIATED WITH SAID CORE TO PRODUCE MAGNETIC FLUX PASSING THROUGH EACH OF SAID AIR GAPS TO EFFECT DEFLECTION OF SAID BEAM, (D) A FERROMAGNETIC SLUG ADJUSTABLY RECEIVED WITHIN EACH OF SAID AIR GAPS TO VARY THE RELUCTANCE OF SAID CORE TO SAID FLUX, (E) WHEREBY MOVEMENT OF SAID SLUGS WITH SAID AIR GAPS CONTROLS THE MAGNITUDE OF DEFLECTION OF SAID BEAM.
Claim 2
Dependent Claim
102 words
A DEFLECTION UNIT FOR THE BEAM OF A CATHODE RAY TUBE COMPRISING: (A) A FERROMAGNETIC CORE OF SUBSTANTIALLY ANNULAR CROSS SECTION COAXIALLY POSITIONED ABOUT THE NECK OF SAID TUBE, (B) DIAMETRICALLY DISPOSED AIR GAPS IN SAID CORE, (C) A COIL OPERATIVELY ASSOCIATED WITH SAID CORE TO PRODUCE MAGNETIC FLUX PASSING THROUGH EACH OF SAID AIR GAPS TO EFFECT DEFLECTION OF SAID BEAM, (D) A FERROMAGNETIC SLUG ADJUSTABLY RECEIVED WITHIN EACH OF SAID AIR GAPS TO VARY THE RELUCTANCE OF SAID CORE TO SAID FLUX, (E) WHEREBY MOVEMENT OF SAID SLUGS WITH SAID AIR GAPS CONTROLS THE MAGNITUDE OF DEFLECTION OF SAID BEAM.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |