Patent US2917449A successfully refreshed from Google Patents.
Patent US3080736A successfully refreshed from Google Patents.
US3080736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the manufacture of wicks or threads from thermoplastic materials such as glass
Assignee: Compagnie de Saint Gobain SA
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Filing: 1961-02-21
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Granted: 1963-03-12
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Expires: 1981-02-21
Abstract
No abstract record available.
Inventors
- 👤 Mabru Marcel
- 👤 Piot Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:57
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
AN APPARATUS OF THE CLASS DESCRIBED IN COMBINATION WITH A HOLLOW CENTRIFUGE ROTATABLE ABOUT A VERTICAL AXIS AND PROVIDED WITH A PERIPHERAL WALL HAVING A PLURALITY OF ROWS OF ORIFICES THEREIN ADAPTED TO HAVE MOLTEN THERMOPLASTIC MATERIAL PROJECTED THERETHROUGH AND ATTENUATED BY A TRANSVERSELY DIRECTED GASEOUS BLAST TO PRODUCE SUCCESSIVE SPIRALS OF FINE FIBERS, MEANS FOR REMOVING THE SPIRALS OF FIBERS FROM BELOW THE CENTRIFUGE, AND MEANS BELOW THE CENTRIFUGE AND CO-AXIAL THEREWITH FOR ACCELERATING THE TRAVEL OF THE FIBERS PROGRESSIVELY TO EFFECT THE ULTIMATE ELIMINATION OF THE SPIRALS AND THE TRANSFORMATION OF THE FIBERS INTO A CONTINUOUS WICK OR THREAD OF FINE FIBERS.
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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |