US3213498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of strengthening glass articles
Assignee: Compagnie de Saint Gobain SA
•
Filing: 1963-04-17
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Granted: 1965-10-26
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Expires: 1983-04-17
Abstract
No abstract record available.
Inventors
- 👤 Lehmann Lionel Bertin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:55
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/87; C; C03; C03B; C03B23/00; C03B23/02; C03C; C03C27/00; C03C27/02; H01J5/00; H01J5/02; H01J5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A METHOD OF STRENGTHENING A GLASS TELEVISION TUBE OR THE LIKE WHICH HAS A GREAT CIRCUMFERENCE MARKED BY A CIRCULAR JOINT AND BY ADJACENT AREAS OF RELATIVELY GREAT CURVATURE WHICH COMPRISES CASTING BY POURING MOLTEN METAL INTO A MOULD DISPOSED ABOUT THE GREAT CIRCUMFERENCE AND SAID ADJACENT AREAS A BAND OF A METAL WHICH HAS A MELTING POINT BELOW THE SOFTENING POINT OF THE GLASS AND WHICH HAS AT DIFFERENT TEMPERATURES A LIQUID STATE, A SOLID STATE WITH INTERNAL MOBILITY A RIGID STATE, AND WHICH HAS A CONTRACTION PARTIALLY REABSORBED BY CREEPING DURING COOLING AND HARDENING, AND GOOD TENSILE STRENGTH AND SOLIDIFYING SAID METAL IN THE FORM OF SAID BAND, THEREBY PUTTING THE PARTS OF THE TUBE BENEATH THE METAL UNDER COMPRESSION.
Claim 2
Independent Claim
122 words
A METHOD OF STRENGTHENING A GLASS TELEVISION TUBE OR THE LIKE WHICH HAS A GREAT CIRCUMFERENCE MARKED BY A CIRCULAR JOINT AND BY ADJACENT AREAS OF RELATIVELY GREAT CURVATURE WHICH COMPRISES CASTING BY POURING MOLTEN METAL INTO A MOULD DISPOSED ABOUT THE GREAT CIRCUMFERENCE AND SAID ADJACENT AREAS A BAND OF A METAL WHICH HAS A MELTING POINT BELOW THE SOFTENING POINT OF THE GLASS AND WHICH HAS AT DIFFERENT TEMPERATURES A LIQUID STATE, A SOLID STATE WITH INTERNAL MOBILITY A RIGID STATE, AND WHICH HAS A CONTRACTION PARTIALLY REABSORBED BY CREEPING DURING COOLING AND HARDENING, AND GOOD TENSILE STRENGTH AND SOLIDIFYING SAID METAL IN THE FORM OF SAID BAND, THEREBY PUTTING THE PARTS OF THE TUBE BENEATH THE METAL UNDER COMPRESSION.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |