US3305339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the manufacture of flat glass on a molten metal bath
Assignee: AGC Glass Europe SA
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Filing: 1963-09-06
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Granted: 1967-02-21
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Expires: 1983-09-06
Abstract
No abstract record available.
Inventors
- 👤 Plumat Emile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:31
CPC Classifications
C; C03; C03B; C03B18/00; C03B18/02; C03B18/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
182 words
THE METHOD OF MANUFACTURING FLAT GLASS WHICH COMPRISES CAUSING GLAS MOLTEN IN A MELTING FURNACE TO FLOW FREELY FROM THE LATTER IN THE FORM OF A SHEET, GUIDING SUCH SHEET OF MOLTEN GLASS DOWN AN INCLINED PATH TO THE SURFACE OF A BATH OF MOLTEN METAL, AND AT THE END OF SUCH INCLINED PATH DEPOSITING AND FLOATING SUCH SHEET OF MOLTEN GLASS ON THE SURFACE OF THE MOLTEN METAL BATH, SUPPLYING HEAT TO THE SHEET OF MOLTEN GLASS THROUGHOUT ITS ENTIRE PATH FROM THE PLACE OF ITS FORMATION AT THE MELTING FURNACE TO THE PLACE AT WHICH IT STARTS TO FLOAT ON THE SURFACE OF THE MOLTEN METAL BATH AT A SUBSTANTIALLY CONSTANT TEMPERATURE AND IN SUCH MANNER THAT THE FORMATION OF TEMPERATURE GRADIENTS TENDING TO PRODUCE A NON-HOMEGENEOUS FLOW OF THE GLASS IS PREVENTED DURING THE MOVEMENT OF THE SHEET THROUGH SUCH PATH, AND SUPPORTING SUCH SHEET OF MOLTEN GLASS TRHOGUOUT ITS ENTIRE PATH FROM THE PLACE OF ITS FORMATION AT THE MELTING FURNACE TO THE PLACE AT WHICH IT STARTS TO FLOAT ON THE SURFACE OF THE MOLTEN METAL BATH.
Claim 2
Independent Claim
182 words
THE METHOD OF MANUFACTURING FLAT GLASS WHICH COMPRISES CAUSING GLAS MOLTEN IN A MELTING FURNACE TO FLOW FREELY FROM THE LATTER IN THE FORM OF A SHEET, GUIDING SUCH SHEET OF MOLTEN GLASS DOWN AN INCLINED PATH TO THE SURFACE OF A BATH OF MOLTEN METAL, AND AT THE END OF SUCH INCLINED PATH DEPOSITING AND FLOATING SUCH SHEET OF MOLTEN GLASS ON THE SURFACE OF THE MOLTEN METAL BATH, SUPPLYING HEAT TO THE SHEET OF MOLTEN GLASS THROUGHOUT ITS ENTIRE PATH FROM THE PLACE OF ITS FORMATION AT THE MELTING FURNACE TO THE PLACE AT WHICH IT STARTS TO FLOAT ON THE SURFACE OF THE MOLTEN METAL BATH AT A SUBSTANTIALLY CONSTANT TEMPERATURE AND IN SUCH MANNER THAT THE FORMATION OF TEMPERATURE GRADIENTS TENDING TO PRODUCE A NON-HOMEGENEOUS FLOW OF THE GLASS IS PREVENTED DURING THE MOVEMENT OF THE SHEET THROUGH SUCH PATH, AND SUPPORTING SUCH SHEET OF MOLTEN GLASS TRHOGUOUT ITS ENTIRE PATH FROM THE PLACE OF ITS FORMATION AT THE MELTING FURNACE TO THE PLACE AT WHICH IT STARTS TO FLOAT ON THE SURFACE OF THE MOLTEN METAL BATH.
Claim 3
Dependent Claim
162 words
APPARATUS FOR MANUFACTURING SHEET GLASS, COMPRISINCLUDING, IN COMBINATION, A FREFRACTORY TANK HAVING TWO ING A MELTING FURNACE HAVING AT ITS DISCHARGE END AN OVERFLOW ENABLING THE MOLTEN GLASS TO FLOW FREELY THEREFROM IN THE FORM OF A SHEET, A BATH OF MOLTEN METAL SPACED FROM SAID FURNACE OVERFLOW AND HAVING ITS SURFACE LOCATED BELOW THE SHEET FORMING SURFACE OF SAID OVERFLOW, AND INCLINED GUIDE MEANS FOR THE SHEET OF MOLTEN GLASS PROVING AN UNINTERRUPTED PATH OF FLOW FROM THE SHEET FORMING SURFACE OF SAID OVERFLOW TO THE SURFACE OF THE MOLTEN METAL BATH AND HAVING A SHEET SUPPORTING SURFACE EXTENDING THROUGH THE SURFACE OF AND DIPPING INTO THE BODY OF THE MOLTEN METAL BATH, WHEREBY THE SHEET OF MOLTEN GLASS IN SUPPORTED THROUGHOUT ITS ENTIRE PATH FROM THE PLACE OF ITS FORMATION AT THE FURNACE OVERFLOW TO THE PLACE WHERE THE MOLTEN GLASS SHEET MOVES FROM THE SUPPORTING SURFACE OF SAID INCLINED GUIDE MEANS ONTO THE SURFACE OF THE MOLTEN METAL BATH.
Claim 4
Dependent Claim
162 words
APPARATUS FOR MANUFACTURING SHEET GLASS, COMPRISINCLUDING, IN COMBINATION, A FREFRACTORY TANK HAVING TWO ING A MELTING FURNACE HAVING AT ITS DISCHARGE END AN OVERFLOW ENABLING THE MOLTEN GLASS TO FLOW FREELY THEREFROM IN THE FORM OF A SHEET, A BATH OF MOLTEN METAL SPACED FROM SAID FURNACE OVERFLOW AND HAVING ITS SURFACE LOCATED BELOW THE SHEET FORMING SURFACE OF SAID OVERFLOW, AND INCLINED GUIDE MEANS FOR THE SHEET OF MOLTEN GLASS PROVING AN UNINTERRUPTED PATH OF FLOW FROM THE SHEET FORMING SURFACE OF SAID OVERFLOW TO THE SURFACE OF THE MOLTEN METAL BATH AND HAVING A SHEET SUPPORTING SURFACE EXTENDING THROUGH THE SURFACE OF AND DIPPING INTO THE BODY OF THE MOLTEN METAL BATH, WHEREBY THE SHEET OF MOLTEN GLASS IN SUPPORTED THROUGHOUT ITS ENTIRE PATH FROM THE PLACE OF ITS FORMATION AT THE FURNACE OVERFLOW TO THE PLACE WHERE THE MOLTEN GLASS SHEET MOVES FROM THE SUPPORTING SURFACE OF SAID INCLINED GUIDE MEANS ONTO THE SURFACE OF THE MOLTEN METAL BATH.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |