Patent US3134660A successfully refreshed from Google Patents.
US3134660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making sheet glass
Assignee: G B D Holding SA
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Filing: 1960-10-27
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Granted: 1964-05-26
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Expires: 1980-10-27
Abstract
No abstract record available.
Inventors
- 👤 Long Beroard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:25
CPC Classifications
C; C03; C03B; C03B15/00; C03B15/02; C03B15/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN AN APPARATUS FOR THE PRODUCTION OF FLAT GLASS INCLUDING AN ELONGATED HORIZONTAL TROUGN OF REFRACTORY MATERIAL FORMING AN UPWARDLY OPEN CHANNEL OF CONSTANT DEPTH FOR THE FLOW OF MOLTEN GLASS, SAID CHANNEL HAVING A TERMINAL PORTION PROVIDED WITH MEANS FOR DRAWING A GLASS SHEET IN UPWARD DIRECTION FROM TWO RELATIVELY VISCOUS VITREOUS MEMBRANES RESPECTIVELY FORMED AT THE TOP AND AT THE BOTTOM OF THE CHANNEL, THE COMBINATION THEREWITH OF A GRAPHITE LAYER COVERING THE FLOOR OF SAID TROUGH, AND COOLING MEANS UNDERNEATH SAID TROUGH FOR DIRECTING A COOLING FLUID AGAINST THE UNDERSIDE OF SAID FLOOR, THEREBY PROMOTING THE FORMATION OF THE LOWER ONE OF SAID MEMBRANES IN A STRATUM OF SAID FLOW DIRECTLY ABOVE SAID GRAPHITE LAYER.
Claim 2
Dependent Claim
118 words
IN AN APPARATUS FOR THE PRODUCTION OF FLAT GLASS INCLUDING AN ELONGATED HORIZONTAL TROUGN OF REFRACTORY MATERIAL FORMING AN UPWARDLY OPEN CHANNEL OF CONSTANT DEPTH FOR THE FLOW OF MOLTEN GLASS, SAID CHANNEL HAVING A TERMINAL PORTION PROVIDED WITH MEANS FOR DRAWING A GLASS SHEET IN UPWARD DIRECTION FROM TWO RELATIVELY VISCOUS VITREOUS MEMBRANES RESPECTIVELY FORMED AT THE TOP AND AT THE BOTTOM OF THE CHANNEL, THE COMBINATION THEREWITH OF A GRAPHITE LAYER COVERING THE FLOOR OF SAID TROUGH, AND COOLING MEANS UNDERNEATH SAID TROUGH FOR DIRECTING A COOLING FLUID AGAINST THE UNDERSIDE OF SAID FLOOR, THEREBY PROMOTING THE FORMATION OF THE LOWER ONE OF SAID MEMBRANES IN A STRATUM OF SAID FLOW DIRECTLY ABOVE SAID GRAPHITE 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) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |