US3379912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beam and raster locating means for thin cathode ray tube
Assignee: Individual
•
Filing: 1965-10-19
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Granted: 1968-04-23
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Expires: 1985-10-19
Abstract
No abstract record available.
Inventors
- 👤 Leo A Shanafelt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:12
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/123; H01J31/124
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN A THIN CATHODE RAY TUBE HAVING A SINGLE ENVELOPE, A TARGET SCREEN, AN ELECTRON GUN AND AN ARRAY OF VERTICAL DEFLECTION PLATES TO PROVIDE FOR VERTICAL SWEEP, WITH SAID GUN LOCATED TO PRODUCE A BEAM WHICH SWEEPS IN A PLANE PARALLEL TO AND SPACED APART FROM SAID SCREEN, A NECKED PORTION OF SAID ENVELOPE EXTENDING OUTWARDLY FROM SAID ENVELOPE AND CONTAINING THEREIN A BEAM EMITTING CATHODE, AT LEAST ONE BEAM ATTRACTING ANODE, A BEAM FOCUSING RING AND A CONTROL GRID, SAID NECKED PORTION HAVING ADJACENT THE OUTER SURFACE THEREOF A PAIR OF POSITIONALLY ADJUSTABLE MAGNETS TO CONTROL LATERAL LOCATION OF THE RASTER AND TO CONTROL POSITIONING OF THE BEAM BETWEEN SAID SCREEN AND SAID ARRAY.
Claim 2
Dependent Claim
116 words
IN A THIN CATHODE RAY TUBE HAVING A SINGLE ENVELOPE, A TARGET SCREEN, AN ELECTRON GUN AND AN ARRAY OF VERTICAL DEFLECTION PLATES TO PROVIDE FOR VERTICAL SWEEP, WITH SAID GUN LOCATED TO PRODUCE A BEAM WHICH SWEEPS IN A PLANE PARALLEL TO AND SPACED APART FROM SAID SCREEN, A NECKED PORTION OF SAID ENVELOPE EXTENDING OUTWARDLY FROM SAID ENVELOPE AND CONTAINING THEREIN A BEAM EMITTING CATHODE, AT LEAST ONE BEAM ATTRACTING ANODE, A BEAM FOCUSING RING AND A CONTROL GRID, SAID NECKED PORTION HAVING ADJACENT THE OUTER SURFACE THEREOF A PAIR OF POSITIONALLY ADJUSTABLE MAGNETS TO CONTROL LATERAL LOCATION OF THE RASTER AND TO CONTROL POSITIONING OF THE BEAM BETWEEN SAID SCREEN AND SAID ARRAY.
References Cited (Backward Citations)
US2795729A
Cited
US3299314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |