Patent US3331963A successfully refreshed from Google Patents.
US3331963A
Expired / Lapsed
US
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Apparatus for optically detecting flaws in sheet material
Assignee: Individual
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Filing: 1964-04-20
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Granted: 1967-07-18
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Expires: 1984-04-20
Abstract
No abstract record available.
Inventors
- 👤 Lippke Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:50
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/89; G01N21/8901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
AN APPARATUS FOR DETECTING OPTICALLY ASCERTAINABLE IMPERFECTIONS ON SHEET MATERIAL, COMPRISING LIGHT-SOURCE MEANS ADAPTED TO PRODUCE A FLAT BUNDLE OF LIGHT RAYS ACROSS A PATH OF SHEET MATERIAL TO BE TESTED, FEED MEANS FOR ADVANCING SAID SHEET MATERIAL ALONG SAID PATH WITH INTERCEPTION OF SAID BUNDLE BY SUCCESSIVE SHEET PORTIONS, LIGHT-RECEIVING MEANS DISPOSED ALONG A LINE TRANSVERSE TO SAID PATH FOR ILLUMINATION BY UNABSORBED LIGHT RAYS OF THE INTERCEPTED BUNDLE, AN ENDLESS PERFORATED BAND DISPOSED BETWEEN SAID LIGHT-SOURCE MEANS AND SAID LIGHTRECEIVING MEANS FOR CONFINING SAID UNABSORBED RAYS TO A MULTIPLICITY OF SMALL SPOTS LYING IN AT LEAST ONE ROW ACROSS SAID PATH, DRIVE MEANS FOR DISPLACING SAID BAND TO SWEEP SAID SPOTS WITH INVARIABLE RELATIVE SAID BAND TO SWEEP AT A RATE RELATED TO THE SPEED OF SAID SHEET MATERIAL BY A RATIO SUBSTANTIALLY CORRESPONDING TO THE RATIO OF THE SEPARATION BETWEEN ADJOINING SPOTS TO THE WIDTH OF SAID SPOTS WHEREBY THE ENTIRE SHEET SURFACE IS SCANNED BY LIGHT RAYS DIRECTED TOWARD SAID LIGHT-RECEIVING MEANS, AND DEFECT-INDICATING MEANS RESPONSIVE TO THE OUTPUT OF SAID LIGHT-RECEIVING MEANS.
Claim 2
Independent Claim
177 words
AN APPARATUS FOR DETECTING OPTICALLY ASCERTAINABLE IMPERFECTIONS ON SHEET MATERIAL, COMPRISING LIGHT-SOURCE MEANS ADAPTED TO PRODUCE A FLAT BUNDLE OF LIGHT RAYS ACROSS A PATH OF SHEET MATERIAL TO BE TESTED, FEED MEANS FOR ADVANCING SAID SHEET MATERIAL ALONG SAID PATH WITH INTERCEPTION OF SAID BUNDLE BY SUCCESSIVE SHEET PORTIONS, LIGHT-RECEIVING MEANS DISPOSED ALONG A LINE TRANSVERSE TO SAID PATH FOR ILLUMINATION BY UNABSORBED LIGHT RAYS OF THE INTERCEPTED BUNDLE, AN ENDLESS PERFORATED BAND DISPOSED BETWEEN SAID LIGHT-SOURCE MEANS AND SAID LIGHTRECEIVING MEANS FOR CONFINING SAID UNABSORBED RAYS TO A MULTIPLICITY OF SMALL SPOTS LYING IN AT LEAST ONE ROW ACROSS SAID PATH, DRIVE MEANS FOR DISPLACING SAID BAND TO SWEEP SAID SPOTS WITH INVARIABLE RELATIVE SAID BAND TO SWEEP AT A RATE RELATED TO THE SPEED OF SAID SHEET MATERIAL BY A RATIO SUBSTANTIALLY CORRESPONDING TO THE RATIO OF THE SEPARATION BETWEEN ADJOINING SPOTS TO THE WIDTH OF SAID SPOTS WHEREBY THE ENTIRE SHEET SURFACE IS SCANNED BY LIGHT RAYS DIRECTED TOWARD SAID LIGHT-RECEIVING MEANS, AND DEFECT-INDICATING MEANS RESPONSIVE TO THE OUTPUT OF SAID LIGHT-RECEIVING MEANS.
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |