US3266789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for melting products such as glass and method of working the same
Assignee: AGC Glass Europe SA
•
Filing: 1961-12-15
•
Granted: 1966-08-16
•
Expires: 1981-12-15
Abstract
No abstract record available.
Inventors
- 👤 Henry Georges
- 👤 Brichard Edgard
- 👤 Plumat Emile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:13
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/42; C03B5/12; C03B5/235; C03B5/2356; C03B5/44; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y10; Y10S; Y10S266/00; Y10S266/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A GLASS MELTING SHAFT FURNACE COMPRISING AN OPENED TOP MELTING CRUCIBLE FORMED OF SHEET METAL IN THE ABSENCE OF REFRACTORY BRICK, SAID METAL ADAPTED TO EXTEND ABOVE SAID GLASS LEVEL, AN OUTLET SURROUNDED BY REFRACTORY MATERIALS EXTENDING ONTO THE SURFACE OF SAID CRUCIBLE ADJACENT SAID OUTLET, MEANS TO HEAT GLASS TO A MOLTEN STATE IN SAID CRUCIBLE, A FLUID TIGHT JACKET SPACED FROM AND COMPLETELY SURROUNDING SAID CRUCIBLE, AND MEANS FOR CIRCULATING A COOLING FLUID THROUGH THE RESULTANT SPACE BETWEEN SAID JACKET AND SAID CRUCIBLE.
Claim 2
Dependent Claim
85 words
A GLASS MELTING SHAFT FURNACE COMPRISING AN OPENED TOP MELTING CRUCIBLE FORMED OF SHEET METAL IN THE ABSENCE OF REFRACTORY BRICK, SAID METAL ADAPTED TO EXTEND ABOVE SAID GLASS LEVEL, AN OUTLET SURROUNDED BY REFRACTORY MATERIALS EXTENDING ONTO THE SURFACE OF SAID CRUCIBLE ADJACENT SAID OUTLET, MEANS TO HEAT GLASS TO A MOLTEN STATE IN SAID CRUCIBLE, A FLUID TIGHT JACKET SPACED FROM AND COMPLETELY SURROUNDING SAID CRUCIBLE, AND MEANS FOR CIRCULATING A COOLING FLUID THROUGH THE RESULTANT SPACE BETWEEN SAID JACKET AND SAID CRUCIBLE.
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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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |