Patent US3356879A successfully refreshed from Google Patents.
US3356879A
Expired / Lapsed
US
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Beam positioning device for varying the effective origin of cathode-ray tube electron beam
Assignee: Zenith Electronics LLC
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Filing: 1963-08-14
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Granted: 1967-12-05
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Expires: 1983-08-14
Abstract
No abstract record available.
Inventors
- 👤 John L Rennick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:09
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/701; H01J29/702; H01J2229/00; H01J2229/56; H01J2229/563; H01J2229/5637; H01J2229/568; H01J2229/5681; H01J2229/5682
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A BEAM POSITIONING DEVICE FOR VARYING THE EFFECTIVE POINT OF ORIGIN OF AN ELECTRON BEAM OF A CATHODERAY TUBE, SAID DEVICE COMPRISING RING MAGNET MEANS HAVING A CENTRAL OPENING AND A PLURALITY OF MAGNETIC POLE PAIRS OF EQUAL STRENGTHS AND DIFFERENT WIDTHS EQUALLY CIRCUMFERENTIALLY SPACED ABOUT AT LEAST A PORTION OF SAID OPENING AND RADIALLY ORIENTED TO ESTABLISH A PREDETERMINED FLUX PATTERN INCLUDING FLUX COMPONENTS FROM ONE POLE OF A SELECTED POLE PAIR TO THE OPPOSITE POLE OF SAID SELECTED POLE PAIR AS WELL AS OTHER FLUX COMPONENTS FROM SAID ONE POLE ACROSS SAID CENTRAL OPENING TO A POLE OF ANOTHER POLE PAIR.
Claim 2
Dependent Claim
103 words
A BEAM POSITIONING DEVICE FOR VARYING THE EFFECTIVE POINT OF ORIGIN OF AN ELECTRON BEAM OF A CATHODERAY TUBE, SAID DEVICE COMPRISING RING MAGNET MEANS HAVING A CENTRAL OPENING AND A PLURALITY OF MAGNETIC POLE PAIRS OF EQUAL STRENGTHS AND DIFFERENT WIDTHS EQUALLY CIRCUMFERENTIALLY SPACED ABOUT AT LEAST A PORTION OF SAID OPENING AND RADIALLY ORIENTED TO ESTABLISH A PREDETERMINED FLUX PATTERN INCLUDING FLUX COMPONENTS FROM ONE POLE OF A SELECTED POLE PAIR TO THE OPPOSITE POLE OF SAID SELECTED POLE PAIR AS WELL AS OTHER FLUX COMPONENTS FROM SAID ONE POLE ACROSS SAID CENTRAL OPENING TO A POLE OF ANOTHER POLE PAIR.
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) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |