US2708857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visual inspection device for curved glass sheets
Assignee: Libbey Owens Ford Glass Co
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Filing: 1951-02-10
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Granted: 1955-05-24
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Expires: 1971-02-10
Abstract
No abstract record available.
Inventors
- 👤 Kenyon E Golding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:34
CPC Classifications
G; G01; G01M; G01M11/00; G01M11/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN APPARATUS FOR INSPECTING PAIRS OF CURVED GLASS SHEETS PRIOR TO LAMINATING TO DETECT NON-CONFORMITY IN CURVATURE THEREBETWEEN, MEANS FOR SUPPORTING THE SHEETS ONE UPON ANOTHER IN SUBSTANTIALLY HORIZONTAL POSITION, AND LIGHT TRANSMITTING MEANS MOUNTED ABOVE SAID SUPPORTING MEANS, SAID LIGHT TRANSMITTING MEANS COMPRISING A LAYER OF TRANSPARENT MATERIAL HAVING SPACED OPAQUE BANDS THEREON AND A LIGHT SOURCE IN BACK OF SAID LAYER OF MATERIAL FOR PROJECTING A PLURALITY OF SUBSTANTIALLY PARALLEL LINES OF WHITE LIGHT DIRECTLY DOWNWARDLY ONTO THE SURFACES OF THE GLASS SHEETS IN A DIRECTION GENERALLY NORMAL TO SAID SURFACES, WHEREIN SAID LINES ARE REFLECTED UPWARDLY AT AN ANGLE ACUTE THERETO.
Claim 2
Dependent Claim
104 words
IN APPARATUS FOR INSPECTING PAIRS OF CURVED GLASS SHEETS PRIOR TO LAMINATING TO DETECT NON-CONFORMITY IN CURVATURE THEREBETWEEN, MEANS FOR SUPPORTING THE SHEETS ONE UPON ANOTHER IN SUBSTANTIALLY HORIZONTAL POSITION, AND LIGHT TRANSMITTING MEANS MOUNTED ABOVE SAID SUPPORTING MEANS, SAID LIGHT TRANSMITTING MEANS COMPRISING A LAYER OF TRANSPARENT MATERIAL HAVING SPACED OPAQUE BANDS THEREON AND A LIGHT SOURCE IN BACK OF SAID LAYER OF MATERIAL FOR PROJECTING A PLURALITY OF SUBSTANTIALLY PARALLEL LINES OF WHITE LIGHT DIRECTLY DOWNWARDLY ONTO THE SURFACES OF THE GLASS SHEETS IN A DIRECTION GENERALLY NORMAL TO SAID SURFACES, WHEREIN SAID LINES ARE REFLECTED UPWARDLY AT AN ANGLE ACUTE THERETO.
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) | 1958-05-23 | 1958-11-22 | 1959-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-23 | 1962-11-22 | 1963-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-23 | 1966-11-22 | 1967-05-24 | $7700.00 | Window Closed / Lapsed |