Patent US3274418A successfully refreshed from Google Patents.
US3274418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Field concentrator having conductive loop proximate beam
Assignee: Zenith Electronics LLC
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Filing: 1963-11-08
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Granted: 1966-09-20
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Expires: 1983-11-08
Abstract
No abstract record available.
Inventors
- 👤 Crumly Charles Burton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:24
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/72; H01J29/76; H01J29/762
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A FIELD CONCENTRATOR FOR A MAGNETICALLY DEFLECTED CATHODE-RAY TUBE HAVING AN ENVELOPE WITH AN ELECTRON GUN LOCATED AT ONE END FOR DEVELOPING AND DIRECTING AN ELECTRON BEAM ALONG A GIVEN PATH TO A SCREEN LOCATED AT THE OTHER END, SAID CONCENTRATOR COMPRISING: A FIRST CONDUCTIVE LOOP POSITIONED CLOSELY ADJACENT THE PERIPHERY OF A PARTICULAR SECTION OF SAID ENVELOPE TO BE INDUCTIVELY COUPLED TO A DEFLECTION YOKE SURROUNDING SAID SECTION OF SAID ENVELOPE; A SECOND CONDUCTIVE LOOP DISPOSED SUBSTANTIALLY PARALLEL AND IN CLOSED PROXIMITY TO SAID BEAM PATH;
Claim 2
Dependent Claim
87 words
A FIELD CONCENTRATOR FOR A MAGNETICALLY DEFLECTED CATHODE-RAY TUBE HAVING AN ENVELOPE WITH AN ELECTRON GUN LOCATED AT ONE END FOR DEVELOPING AND DIRECTING AN ELECTRON BEAM ALONG A GIVEN PATH TO A SCREEN LOCATED AT THE OTHER END, SAID CONCENTRATOR COMPRISING: A FIRST CONDUCTIVE LOOP POSITIONED CLOSELY ADJACENT THE PERIPHERY OF A PARTICULAR SECTION OF SAID ENVELOPE TO BE INDUCTIVELY COUPLED TO A DEFLECTION YOKE SURROUNDING SAID SECTION OF SAID ENVELOPE; A SECOND CONDUCTIVE LOOP DISPOSED SUBSTANTIALLY PARALLEL AND IN CLOSED PROXIMITY TO SAID BEAM PATH;
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |