US3128385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive hole detector using phosphor radiation source
Assignee: Cutler Hammer Inc
•
Filing: 1959-02-18
•
Granted: 1964-04-07
•
Expires: 1979-02-18
Abstract
No abstract record available.
Inventors
- 👤 Scharf Erich
- 👤 Fajans Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:08
CPC Classifications
G; G07; G07C; G07C3/00; G07C3/14; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/89; G01N21/892; G01N21/894
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
AN APPARATUS FOR INSPECTING MATERIAL MOVING ALONG A PATH, COMPRISING ILLUMINATING MEANS INCLUDING A SOURCE OF ULTRAVIOLET RADIATION MOUNTED ON ONE SIDE OF SAID PATH FOR ILLUMINATING A PREDETERMINED AREA OF SAID MATERIAL, PHOTOELECTRIC MEANS MOUNTED ON TE OPPOSITE SIDE OF SAID PATH AND IN POSITION TO SCAN THE AREA OF THE SURFACE OPPOSITE TO THAT ILLUMINATED AND TO REVEIVE RADIATION FROM SAID ILLUMINATING MEANS WHICH PASSES THROUGH A HOLE IN SAID MATERIAL, FILTER MEANS INTERPOSED BETWEEN THE SCANNED AREA AND SAID PHOTOELECTRIC MEANS ADAPTED TO PASS SUBSTANTIALLY ONLY SAID ULTRAVIOLET RADIATION, SAID FILTER MENAS INCLUDING AT LEAST ONE FILTER ELEMENT TRANSPARENT TO SAID ULTRAVIOLET RADIATION AND SUBSTANTIALLY OPAQUE TO RADIATION OF A LONGER WAVE LENGTH, SAID FILTER ELEMENT HAVING A COATING ON THE SURFAC ETHEROF PRESENTED TOWARDS SAID PHOTOELECTRIC MEANS, SAID COATING WHEN EXCITED BY SAID ULTRAVIOLET RADIATION BEING ADAPTED TO EMIT RADIATION FOR EXCITING SAID PHOTOELECTRIC MEANS, AND MEANS RESPONSIVE TO SAID PHOTOELECTRIC MEANS FRO PROVIDING A SIGNAL WHEN A HOLE IN SAID MATERIAL PASSES THROUGH SAID SCANNED AREA.
Claim 2
Independent Claim
171 words
AN APPARATUS FOR INSPECTING MATERIAL MOVING ALONG A PATH, COMPRISING ILLUMINATING MEANS INCLUDING A SOURCE OF ULTRAVIOLET RADIATION MOUNTED ON ONE SIDE OF SAID PATH FOR ILLUMINATING A PREDETERMINED AREA OF SAID MATERIAL, PHOTOELECTRIC MEANS MOUNTED ON TE OPPOSITE SIDE OF SAID PATH AND IN POSITION TO SCAN THE AREA OF THE SURFACE OPPOSITE TO THAT ILLUMINATED AND TO REVEIVE RADIATION FROM SAID ILLUMINATING MEANS WHICH PASSES THROUGH A HOLE IN SAID MATERIAL, FILTER MEANS INTERPOSED BETWEEN THE SCANNED AREA AND SAID PHOTOELECTRIC MEANS ADAPTED TO PASS SUBSTANTIALLY ONLY SAID ULTRAVIOLET RADIATION, SAID FILTER MENAS INCLUDING AT LEAST ONE FILTER ELEMENT TRANSPARENT TO SAID ULTRAVIOLET RADIATION AND SUBSTANTIALLY OPAQUE TO RADIATION OF A LONGER WAVE LENGTH, SAID FILTER ELEMENT HAVING A COATING ON THE SURFAC ETHEROF PRESENTED TOWARDS SAID PHOTOELECTRIC MEANS, SAID COATING WHEN EXCITED BY SAID ULTRAVIOLET RADIATION BEING ADAPTED TO EMIT RADIATION FOR EXCITING SAID PHOTOELECTRIC MEANS, AND MEANS RESPONSIVE TO SAID PHOTOELECTRIC MEANS FRO PROVIDING A SIGNAL WHEN A HOLE IN SAID MATERIAL PASSES THROUGH SAID SCANNED AREA.
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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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |