US3216809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of analyzing glass sheets for cutting
Assignee: Compagnie de Saint Gobain SA
•
Filing: 1959-05-07
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Granted: 1965-11-09
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Expires: 1979-05-07
Abstract
No abstract record available.
Inventors
- 👤 Slabodsky Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:34
CPC Classifications
C; C03; C03B; C03B13/00; C03B33/00; C03B33/02; C03B33/023; C03B33/0235; C03B33/03; C03B33/037; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57; Y10; Y10T; Y10T225/00; Y10T225/30; Y10T225/307; Y10T225/321; Y10T225/325; Y10T83/00; Y10T83/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
AN INSTALLATION FOR THE PRODUCTION OF GLASS PANELS FROM A CONTINUOUS GLASS RIBBON COMPRISING A MELTING FURNACE FROM WHICH MOLTEN GLASS ISSUES AS A MOVING GLASS RIBBON, AN ANNEALING FURNACE IN WHICH THE RIBBON IS COOLED, APPARATUS FOR GRINDING BOTH SURFACES OF THE MOVING RIBBON, AND POLISHING APPARATUS, CHARACTERIZED IN THAT MEANS FOR INSPECTING THE RIBBON OF GLASS DURING ITS CONTINUOUS DISPLACEMENT, AND FOR REGISTERING AND MARKING HTE LOCATION OF THE DEFECTS DISCLOSED BY THESE INSPECTING MEANS, ARE PROVIDED AFTER THE ANNEALING OVEN AND BEFORE THE GRINDERS, AFTER THE GRINDING APPARATUS AND BEFORE THE POLISHING APPARATUS, AND AFTER THE POLISHING APPARATUS, SAID INSPECTION MEANS INCLUDING MEANS OPERATING BY TRANSMITTED LIGHT, BY ULTRAVIOLET LIGHT, BY SHORT WAVE, AND BY INTERFEROMETER, AND MEANS TO RECORD THE LOCATION OF THE IMPERFECTIONS REVEALED BY THE APPARATUS.
Claim 2
Independent Claim
77 words
A METHOD OF CONTINUOUSLY MANUFACTURING GLSS, INSPECTING A MOVING RIBBON OF GLASS, AND RECORDING DEFECTS WHICH COMPRISES LOCATING THE DEFECTS IN THE GLASS SHEET AFTER THE ANNEALING FURNACE AND EACH SUBSEQUENT STEP OF WORKING THE SURFACE OF THE GLASS, RECORDING THE LOCATION OF THE DEFECTS THUS DISCOVERED, FORWARDING THE RECORDINGS WITH THE SHEET, ESTABLISHING A CUTTING PROGRAM OF THE BASIS OF THE RECORDINGS, AND CUTTING THE SHEET IN PIECES WHICH ELIMINATE THE DEFECTS REVEALED BY THE RECORDINGS.
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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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |