US3611485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinning chimney
Assignee: Monsanto Co
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Filing: 1968-12-30
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Granted: 1971-10-12
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Expires: 1988-12-30
Abstract
Abstract A SPINNING CHINMEY TO BE USED FOR THE QUENCHING OF MOLTEN POLYMERIC FILAMENTS, SAID CHIMNEY HAVING WALLS WHICH CONVERGE FROM TOP TO BOTTOM AND THROUGH WHICH THE FILAMENTS AND A QUENCHING MEDIUM PASS DOWNWARDLY, AND A WALL ENGULFING SHROUD EXTENDING BEYOND THE TOPS AND BOTTOMS OF THE WALLS AND POSITIONED TO CAPTURE AT LEAST PART OF THE FLUID WHICH EXISTS FROM THE BOTTOM OF THE WALLS AND REDIRECT SAME BACK BETWEEN THE WALLS AND SHROUD FOR FLOW ADJACENT THE TOP OF THE WALLS ONTO THE FILAMENTS.
Inventors
- 👤 Allen E Leybourne
- 👤 Carl J Setzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:55
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; D01D5/088; D01D5/092
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |