Patent US3770866A successfully refreshed from Google Patents.
US3770866A
Expired / Lapsed
US
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Drawing polyester filaments using as a snubing means a heated roller driven at the feed rate speed
Assignee: Teijin Ltd
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Filing: 1972-01-04
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Granted: 1973-11-06
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Expires: 1992-01-04
Abstract
Abstract TURES THAT THE PERIPHERAL SPEEDS OF ALL FEED ROLLERS ARE SUBSTANTIALLY THE SAME AT LEAST THE LAST FEED ROLLER IS GIVEN A SMALL DIAMETER OF 15 TO 50 MM., AND THE ARC OF CONTACT OF THE FILAMENTS ON SAID ROLLER IS MADE AT LEAST 180, WHEREBY THE DRAWING POINT IS FIXED ON SAID ROLLER. A PROCESS FOR DRAWING POLYESTER FILAMENTS WHICH COMPRISES DRAWING UNDRAWN FILAMENTS OF POLYESTER CONTAINING AT LEAST 85 MOL PRECENT OF ETHYLENE TEREPHTHALATE UNITS BETWEEN PLURAL HEATED FEED ROLLERS AND AT LEAST ONE DRAWING ROLLER ROTATING AT AT A PERIPHERAL SPEED HIGHER THAN THAT OF THE FEED ROLLERS, THE IMPROVEMENT RESIDING IN THE FEA-
Inventors
- 👤 K Sakata
- 👤 Y Asada
- 👤 Y Okamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:39
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/228; D01; D01F; D01F6/00; D01F6/58; D01F6/62; D02J1/227; Y; Y10; Y10S; Y10S264/00; Y10S264/73
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |