Patent US3179840A successfully refreshed from Google Patents.
US3179840A
Expired / Lapsed
US
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Method of obtaining uniform response from a television camera device
Assignee: Westinghouse Electric Corp
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Filing: 1961-02-10
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Granted: 1965-04-20
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Expires: 1981-02-10
Abstract
No abstract record available.
Inventors
- 👤 Robert H Clayton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:38
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/26; H01J31/28; H01J31/34; H01J31/38; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45; H04; H04N; H04N23/00; H04N23/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD OF OPTIMIZING OUTPUT SIGNAL UNIFORMITY OF A TELEVISION PICKUP TUBE COMPRISING AN ELECTRON BEAM SOURCE, A LIGHT SENSITIVE TARGET MEMBER, A FIRST ELECTRODE DISPOSED AROUND THE PATH OF ELECTRONS FROM SAID ELECTRON BEAM SOURCE TO SAID TARGET MEMBER, A SECOND APERTURED ELECTRODE DISPOSED TRANSVERSE TO THE PATH OF ELECTRONS FROM SAID ELECTRON BEAM SOURCE TO SAID TARGET MEMBER, SAID FIRST AND SECOND ELECTRODES BEING ELECTRICALLY INDEPENDENT SO THAT SUBSTANTIALLY DIFFERENT POTENTIALS MAY BE APPLIED THERETO, SAID METHOD COMPRISING THE STEPS OF; ILLUMINATING SAID TARGET MEMBER SUBSTANTIALLY UNIFORMLY, ADJUSTING THE POTENTIAL DIFFERENCE BE-
Claim 2
Independent Claim
94 words
A METHOD OF OPTIMIZING OUTPUT SIGNAL UNIFORMITY OF A TELEVISION PICKUP TUBE COMPRISING AN ELECTRON BEAM SOURCE, A LIGHT SENSITIVE TARGET MEMBER, A FIRST ELECTRODE DISPOSED AROUND THE PATH OF ELECTRONS FROM SAID ELECTRON BEAM SOURCE TO SAID TARGET MEMBER, A SECOND APERTURED ELECTRODE DISPOSED TRANSVERSE TO THE PATH OF ELECTRONS FROM SAID ELECTRON BEAM SOURCE TO SAID TARGET MEMBER, SAID FIRST AND SECOND ELECTRODES BEING ELECTRICALLY INDEPENDENT SO THAT SUBSTANTIALLY DIFFERENT POTENTIALS MAY BE APPLIED THERETO, SAID METHOD COMPRISING THE STEPS OF; ILLUMINATING SAID TARGET MEMBER SUBSTANTIALLY UNIFORMLY, ADJUSTING THE POTENTIAL DIFFERENCE BE-
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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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |