US3236010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for finishing glass surfaces
Assignee: Corning Glass Works
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Filing: 1964-11-06
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Granted: 1966-02-22
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Expires: 1984-11-06
Abstract
No abstract record available.
Inventors
- 👤 James W Evans
- 👤 Karl E Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:28
CPC Classifications
B; B24; B24B; B24B19/00; B24B19/26; B24D; B24D13/00; B24D13/14; B24D13/142; Y; Y10; Y10S; Y10S451/00; Y10S451/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE METHOD OF FINISHING THE EXTERNAL CONVEX SURFACE OF A TELEVISION PICTURE TUBE VIEWING PANEL COMPRISING ROTATING SAID TELEVISION PICTURE TUBE VIEWING PANEL ABOUT A CENTRAL AXIS PERPENDICULAR TO ITS SURFACE OF CURVATURE, ROTATING A FLEXIBLE DISC HAVING GLASS FINISHING ELEMENTS ATTACHED THERETO AND HAVING A CONCAVE SURFACE OF CURVATURE OF APPROXIMATELY THE RADIUS INTERMEDIATE THE MAXIMUM AND MINIMUM RADII OF THE VIEWING PANEL SURFACE CURVATURE ABOUT A CENTRAL AXIS PERPENDICULAR TO THE DISC SURFACE OF CURVATURE, EXPOSING THE CONVEX SURFACE OF SAID VIEWING PANEL TO SAID FINISHING ELEMENTS WITH SAID AXIS OF SAID DISC SUBSTANTIALLY PERPENDICULARLY INTERSECTING THE CURVED SURFACE OF SAID VIEWING PANEL BETWEEN THE CENTER THEREOF AND ITS PERIPHERY, AND FLOWING AN ABRASIVE SLURRY BETWEEN SAID CURVED SURFACE AND SAID FINISHING ELEMENTS.
Claim 2
Independent Claim
125 words
THE METHOD OF FINISHING THE EXTERNAL CONVEX SURFACE OF A TELEVISION PICTURE TUBE VIEWING PANEL COMPRISING ROTATING SAID TELEVISION PICTURE TUBE VIEWING PANEL ABOUT A CENTRAL AXIS PERPENDICULAR TO ITS SURFACE OF CURVATURE, ROTATING A FLEXIBLE DISC HAVING GLASS FINISHING ELEMENTS ATTACHED THERETO AND HAVING A CONCAVE SURFACE OF CURVATURE OF APPROXIMATELY THE RADIUS INTERMEDIATE THE MAXIMUM AND MINIMUM RADII OF THE VIEWING PANEL SURFACE CURVATURE ABOUT A CENTRAL AXIS PERPENDICULAR TO THE DISC SURFACE OF CURVATURE, EXPOSING THE CONVEX SURFACE OF SAID VIEWING PANEL TO SAID FINISHING ELEMENTS WITH SAID AXIS OF SAID DISC SUBSTANTIALLY PERPENDICULARLY INTERSECTING THE CURVED SURFACE OF SAID VIEWING PANEL BETWEEN THE CENTER THEREOF AND ITS PERIPHERY, AND FLOWING AN ABRASIVE SLURRY BETWEEN SAID CURVED SURFACE AND SAID FINISHING ELEMENTS.
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |