US3141109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television convergence circuit
Assignee: Zenith Electronics LLC
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Filing: 1960-10-04
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Granted: 1964-07-14
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Expires: 1980-10-04
Abstract
No abstract record available.
Inventors
- 👤 James F Chandler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:03
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/16; H04N9/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A COLOR TELEVISION RECEIVER: A COLOR IMAGE REPRODUCER IN WHICH A LUMINESCENT SCREEN IS SCANNED BY A PLURALITY OF ELECTRON BEAMS EFFECTIVELY ORIGINATING FROM A CORRESPONDING PLURALITY OF TRANSVERSELY SPACED LOCATIONS; AND MEANS FOR SUBJECTING AT LEAST ONE OF SAID ELECTRON BEAMS TO A BEAM-DIRECTING FIELD VARYING IN MAGNITUDE WITH RESPECT TO TIME AS A PARABOLIC FUNCTION COMPOSED OF SUPERIMPOSED PORTIONS OF A PAIR OF PARABOLAS HAVING THEIR PRINCIPAL AXES CANTED WITH RESPECT TO ONE ANOTHER TO CONVERGE SAID BEAMS IN A SURFACE HAVING A PREDETERMINED LOCATION RELATIVE TO THAT OF SAID SCREEN.
Claim 2
Dependent Claim
94 words
IN A COLOR TELEVISION RECEIVER: A COLOR IMAGE REPRODUCER IN WHICH A LUMINESCENT SCREEN IS SCANNED BY A PLURALITY OF ELECTRON BEAMS EFFECTIVELY ORIGINATING FROM A CORRESPONDING PLURALITY OF TRANSVERSELY SPACED LOCATIONS; AND MEANS FOR SUBJECTING AT LEAST ONE OF SAID ELECTRON BEAMS TO A BEAM-DIRECTING FIELD VARYING IN MAGNITUDE WITH RESPECT TO TIME AS A PARABOLIC FUNCTION COMPOSED OF SUPERIMPOSED PORTIONS OF A PAIR OF PARABOLAS HAVING THEIR PRINCIPAL AXES CANTED WITH RESPECT TO ONE ANOTHER TO CONVERGE SAID BEAMS IN A SURFACE HAVING A PREDETERMINED LOCATION RELATIVE TO THAT OF SAID SCREEN.
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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |