US3853524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bubbler for a glass melting furnace
Assignee: PPG Industries Inc
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Filing: 1974-02-14
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Granted: 1974-12-10
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Expires: 1994-02-14
Abstract
Abstract This invention relates to an improved bubbler used with glass melting furnaces. The bubbler includes a monolithic molybdenum tube having a passageway therethrough. The outer surface of the tube and the wall of the passageway are coated with molybdenum disilicide.
Inventors
- 👤 R Schwenninger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:23
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/18; C03B5/193
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
90 words
IN A BUBBLER OF THE TYPE MOUNTED IN REFRACTORIES OF A GLASS MELTING FURNACE WHEREIN A PORTION OF THE BUBBLER IS TO BE SUBMERGED IN A POOL OF MOLTEN GLASS TO BE CONTAINED IN THE FURNACE AND A PORTION OF THE BUBBLER EXTENDS BEYOND THE REFRACTORIES TO PROVIDE ACCESS TO THE BUBBLER TO MOVE A FLUID THROUGH A PASSAGEWAY IN THE BUBBLER INTO THE MOLTEN GLASS, THE IMPROVEMENT WHICH COMPRISES: A. MONOLITHIC MOLYBDENUM TUBE HAVING A PASSAGEWAY; AND A MOLYBDENUM DISILICIDE COATING ON THE OUTER SURFACES OF SAID MOLYBDENUM TUBE.
Claim 2
Dependent Claim
90 words
IN A BUBBLER OF THE TYPE MOUNTED IN REFRACTORIES OF A GLASS MELTING FURNACE WHEREIN A PORTION OF THE BUBBLER IS TO BE SUBMERGED IN A POOL OF MOLTEN GLASS TO BE CONTAINED IN THE FURNACE AND A PORTION OF THE BUBBLER EXTENDS BEYOND THE REFRACTORIES TO PROVIDE ACCESS TO THE BUBBLER TO MOVE A FLUID THROUGH A PASSAGEWAY IN THE BUBBLER INTO THE MOLTEN GLASS, THE IMPROVEMENT WHICH COMPRISES: A. MONOLITHIC MOLYBDENUM TUBE HAVING A PASSAGEWAY; AND A MOLYBDENUM DISILICIDE COATING ON THE OUTER SURFACES OF SAID MOLYBDENUM TUBE.
Claim 3
Dependent Claim
21 words
The improved bubbler as set forth in claim 1 further including a molybdenum disilicide coating on the wall of the passageway.
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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |