Patent US3331672A successfully refreshed from Google Patents.
US3331672A
Expired / Lapsed
US
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Method and apparatus for drawing glass strips off of a molten metal bath
Assignee: AGC Glass Europe SA
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Filing: 1963-10-15
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Granted: 1967-07-18
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Expires: 1983-10-15
Abstract
No abstract record available.
Inventors
- 👤 Javaux Gustave
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:13
CPC Classifications
C; C03; C03B; C03B15/00; C03B15/02; C03B15/04; C03B18/00; C03B18/02; C03B18/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
109 words
A METHOD OF CONTINUOUSLY DRAWING A GLASS STRIP UPWARD FROM A LAYER OF GLASS IN THE PLASTIC STATE FLOATING ON A SUPPORTING BATH OF MOLTEN MATERIAL, COMPRISING SLIDINGLY ADVANCING SAID LAYER ALONG THE BATH TOWARD THE ZONE WHEREAT THE STRIP IS DRAWN, FROM ONE SIDE ONLY OF THIS ZONE, COOLING THE TERMINAL FRONT SURFACE OF THE LAYER THROUGH THE ENTIRE DEPTH OF THE LAYER TO A DEGREE OF VISCOSITY SUCH THAT THE SLIDING ADVANCEMENT OF THE LAYER ALONG THE SUPPORTING BATH IS HALTED ADJACENT TO THE DRAWING ZONE, AND CONTINUOUSLY DRAWING UPWARD THE GLASS STRIP SUCH THAT SAID TERMINAL FRONT SURFACE IS DRAWN WITH THE REST OF THE GLASS.
Claim 2
Independent Claim
109 words
A METHOD OF CONTINUOUSLY DRAWING A GLASS STRIP UPWARD FROM A LAYER OF GLASS IN THE PLASTIC STATE FLOATING ON A SUPPORTING BATH OF MOLTEN MATERIAL, COMPRISING SLIDINGLY ADVANCING SAID LAYER ALONG THE BATH TOWARD THE ZONE WHEREAT THE STRIP IS DRAWN, FROM ONE SIDE ONLY OF THIS ZONE, COOLING THE TERMINAL FRONT SURFACE OF THE LAYER THROUGH THE ENTIRE DEPTH OF THE LAYER TO A DEGREE OF VISCOSITY SUCH THAT THE SLIDING ADVANCEMENT OF THE LAYER ALONG THE SUPPORTING BATH IS HALTED ADJACENT TO THE DRAWING ZONE, AND CONTINUOUSLY DRAWING UPWARD THE GLASS STRIP SUCH THAT SAID TERMINAL FRONT SURFACE IS DRAWN WITH THE REST OF THE GLASS.
Claim 3
Dependent Claim
145 words
APPARATUS FOR CONTINUOUSLY DRAWING A GLASS STRIP UPWARD, COMPRISING A DRAWING TANK CONTAINING A SUPPORTING BATH OF MOLTEN MATERIAL DENSER THAN GLAASS, A DEVICE FOR DRAWING UPWARD BETWEEN THE OPPOSITE ENDS OF SAID TANK A GLASS STRIP FROM A LAYER OF GLASS SLIDING ON SAID BATH TOWARDS A DRAWING ZONE FROM ONE ONLY OFSAID OPPOSITE ENDS OF THE TANK AND THEREBY LEAVE UNCOVERED THE PORTION OF THE BATH LOCATED DOWNSTREAM OF THE DRAWING ZONE, MEANS ABOVE THE BATH FOR COOLING THE TERMINAL FRONT SURFACE OF SAID SLIDING GLASS LAYER TO HALT THE FLOW OF THE GLASS LAYER ADJACENT THE FOOT OF THE STRIP AND ENABLE SAID TERMINAL FRONT SURFACE TO BE DRAWN UPWARD WITH THE REST OF THE FOOT AND HEAT INSULATING MEANS BETWEEN SAID COOLING MEANS AND THE UNCOVERED PORTION OF THE BATH LOCATED DOWNSTREAM OF SAID TERMINAL FRONT SURFACE OF THE GLASS LAYER.
Claim 4
Dependent Claim
145 words
APPARATUS FOR CONTINUOUSLY DRAWING A GLASS STRIP UPWARD, COMPRISING A DRAWING TANK CONTAINING A SUPPORTING BATH OF MOLTEN MATERIAL DENSER THAN GLAASS, A DEVICE FOR DRAWING UPWARD BETWEEN THE OPPOSITE ENDS OF SAID TANK A GLASS STRIP FROM A LAYER OF GLASS SLIDING ON SAID BATH TOWARDS A DRAWING ZONE FROM ONE ONLY OFSAID OPPOSITE ENDS OF THE TANK AND THEREBY LEAVE UNCOVERED THE PORTION OF THE BATH LOCATED DOWNSTREAM OF THE DRAWING ZONE, MEANS ABOVE THE BATH FOR COOLING THE TERMINAL FRONT SURFACE OF SAID SLIDING GLASS LAYER TO HALT THE FLOW OF THE GLASS LAYER ADJACENT THE FOOT OF THE STRIP AND ENABLE SAID TERMINAL FRONT SURFACE TO BE DRAWN UPWARD WITH THE REST OF THE FOOT AND HEAT INSULATING MEANS BETWEEN SAID COOLING MEANS AND THE UNCOVERED PORTION OF THE BATH LOCATED DOWNSTREAM OF SAID TERMINAL FRONT SURFACE OF THE GLASS LAYER.
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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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |