US3138730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convergence device for color television
Assignee: Zenith Electronics LLC
•
Filing: 1960-05-19
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Granted: 1964-06-23
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Expires: 1980-05-19
Abstract
No abstract record available.
Inventors
- 👤 Charles H Heuer
- 👤 John L Rennick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:25
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/701; H01J29/702; H01J2229/00; H01J2229/56; H01J2229/568; H01J2229/5681; H01J2229/5682
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A MAGNETIC CONVERGENCE DEVICE ADAPTED FOR MOUNTING ON THE CIRCULAR NECK OF A MULTI-BEAM CATHODE-RAY TUBE COMPRISING: A PLURALITY OF ELECTROMAGNETS; A PLURALITY OF PERMANENT MAGNETS; A UNITARY SUPPORT MEMBER OF NON-MAGNETIC MATERIAL INCLUDING MEANS CONSISTING OF A RESILIENT OUTER PORTION AND A SUBSTANTIALLY CIRCULAR RESILIENT INNER PORTION FOR ADJUSTABLY POSITIONING AND FRICTIONALLY RETAINING SAID ELECTROMAGNETS IN PREDETERMINED CIRCUMFERENTIALLY SPACED RELATION ABOUT SAID CATHODE-RAY TUBE NECK; AND RESILIENT MEANS COUPLED TO SAID ELECTROMAGNETIC POSITIONING SUPPORT MEMBER FOR RETAINING AND POSITIONING SAID PERMANENT MAGNETS WHILE ALLOWING FOR ROTATIONAL ADJUSTMENT THEREOF.
Claim 2
Dependent Claim
89 words
A MAGNETIC CONVERGENCE DEVICE ADAPTED FOR MOUNTING ON THE CIRCULAR NECK OF A MULTI-BEAM CATHODE-RAY TUBE COMPRISING: A PLURALITY OF ELECTROMAGNETS; A PLURALITY OF PERMANENT MAGNETS; A UNITARY SUPPORT MEMBER OF NON-MAGNETIC MATERIAL INCLUDING MEANS CONSISTING OF A RESILIENT OUTER PORTION AND A SUBSTANTIALLY CIRCULAR RESILIENT INNER PORTION FOR ADJUSTABLY POSITIONING AND FRICTIONALLY RETAINING SAID ELECTROMAGNETS IN PREDETERMINED CIRCUMFERENTIALLY SPACED RELATION ABOUT SAID CATHODE-RAY TUBE NECK; AND RESILIENT MEANS COUPLED TO SAID ELECTROMAGNETIC POSITIONING SUPPORT MEMBER FOR RETAINING AND POSITIONING SAID PERMANENT MAGNETS WHILE ALLOWING FOR ROTATIONAL ADJUSTMENT THEREOF.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |