Patent US3351447A successfully refreshed from Google Patents.
US3351447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the manufacture of flat glass on a molten metal bath
Assignee: Pilkington Group Ltd
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Filing: 1964-08-11
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Granted: 1967-11-07
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Expires: 1984-08-11
Abstract
No abstract record available.
Inventors
- 👤 Lawrenson Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:41
CPC Classifications
C; C03; C03B; C03B18/00; C03B18/02; C03B18/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
120 words
APPARATUS FOR USE IN THE MANUFACTURE OF FLAT GLASS DURING WHICH GLASS IS ADVANCED IN RIBBON FORM ALONG A BATH OF MOLTEN METAL, COMPRISING AN ELONGATED TANK STRUCTURE CONTAINING THE BATH OF MOLTEN METAL, MEANS FOR FEEDING GLASS ON THE BATH AND ADVANCING THE GLASS IN RIBBON FORM ALONG THE BATH TOWARDS AN OUTLET IN THE TANK STRUCTURE, AND AT LEAST ONE TUBE EXTENDING THROUGH THE TANK STRUCTURE ABOVE THE BATH AND TERMINATING IN PROXIMITY TO THE BATH SURFACE, SAID TUBE BEING TERMINATED BY A WIRE MESH SO THAT A PELLET COMPRISING ADDITIVE METAL INTRODUCED INTO THE TUBE IS SUPPORTED ON THE WIRE MESH AS THE PELLET MELTS AND FALLS IN A LIQUID FORM INTO THE BATH OF MOLTEN METAL.
Claim 2
Dependent Claim
120 words
APPARATUS FOR USE IN THE MANUFACTURE OF FLAT GLASS DURING WHICH GLASS IS ADVANCED IN RIBBON FORM ALONG A BATH OF MOLTEN METAL, COMPRISING AN ELONGATED TANK STRUCTURE CONTAINING THE BATH OF MOLTEN METAL, MEANS FOR FEEDING GLASS ON THE BATH AND ADVANCING THE GLASS IN RIBBON FORM ALONG THE BATH TOWARDS AN OUTLET IN THE TANK STRUCTURE, AND AT LEAST ONE TUBE EXTENDING THROUGH THE TANK STRUCTURE ABOVE THE BATH AND TERMINATING IN PROXIMITY TO THE BATH SURFACE, SAID TUBE BEING TERMINATED BY A WIRE MESH SO THAT A PELLET COMPRISING ADDITIVE METAL INTRODUCED INTO THE TUBE IS SUPPORTED ON THE WIRE MESH AS THE PELLET MELTS AND FALLS IN A LIQUID FORM INTO THE BATH OF MOLTEN METAL.
Claim 3
Dependent Claim
73 words
IN THE MANUFACTURE OF FLAT GLASS DURING WHICH GLASS IS IN CONTACT WITH A MOLTEN METAL SURFACE, FEEDING INTO THE MOLTEN METAL AN ADDITIVE ELEMENT WITH WHICH OXYGEN AND SULPHUR PRESENT IN THE MOLTEN METAL REACT IN PREFERENCE TO REACTION WITH THE MOLTEN METAL, BY SUPPORTING UNMELTED MATERIAL COMPRISING SAID ADDITIVE ELEMENT ADJACENT THE MOLTEN METAL SURFACE FOR A TIME SUFFICIENT TO PERMIT THE MATERIAL TO MELT AND RUN INTO THE MOLTEN METAL.
Claim 4
Dependent Claim
73 words
IN THE MANUFACTURE OF FLAT GLASS DURING WHICH GLASS IS IN CONTACT WITH A MOLTEN METAL SURFACE, FEEDING INTO THE MOLTEN METAL AN ADDITIVE ELEMENT WITH WHICH OXYGEN AND SULPHUR PRESENT IN THE MOLTEN METAL REACT IN PREFERENCE TO REACTION WITH THE MOLTEN METAL, BY SUPPORTING UNMELTED MATERIAL COMPRISING SAID ADDITIVE ELEMENT ADJACENT THE MOLTEN METAL SURFACE FOR A TIME SUFFICIENT TO PERMIT THE MATERIAL TO MELT AND RUN INTO THE MOLTEN METAL.
References Cited (Backward Citations)
US2754559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |