US3365874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of synthetic filaments
Assignee: Monsanto Co
•
Filing: 1965-10-15
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Granted: 1968-01-30
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Expires: 1985-10-15
Abstract
No abstract record available.
Inventors
- 👤 Ronald W Chidgey
- 👤 Claude M Irwin
- 👤 Paul E Sikorski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:28
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/229; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D02G; D02G3/00; D02G3/22; D02G3/40; D02G3/402; D02J1/225
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A METHOD OF TREATING MOLECULARLY ORIENTABLE SYNTHETIC CONTINUOUS MULTIFILAMENT YARN OF SUBSTANTIALLY ZERO TWIST COMPRISING THE STEPS: (A) PROVIDING A SOURCE OF THE YARN, THE INDIVIDUAL FILAMENTS OF WHICH ARE SUBSTANTIALLY STRAIGHT AND PARALLEL; (B) LONGITUDINALLY FORWARDING THE YARN; (C) STRETCHING THE YARN BY TENSIONING IN A STRETCH ZONE TO ORIENT THE MOLECULES THEREOF; (D) REDUCING THE TENSION ON THE YARN; (E) APPLYING A PERIPHAL EFFORT ON THE YARN TO SLIGHTLY FALSE TWIST SAME WITH THE TWIST RUNNING BACK TOWARD THE STRETCH ZONE; (F) COATING THE FALSE TWISTED YARN WITH A SMALL AMOUNT OF A LIQUID EVANESCENT SOLVENT THEREOF; (G) DETWISTING THE YARN CARRYING THE SOLVENT; (H) THEN HEATING THE YARN UNDER LOW TENSION TO DISSIPATE THE ACTION OF THE SOLVENT AND TO RELAX SAME; AND (I) COLLECTING THE YARN IN AN ORDERLY MANNER UNDER A TENSION OF ABOUT 0.05-0.4 GRAM PER DENIER AND AT A SPEED OF ABOUT 4 TO 12% LESS THAN THE SPEED OF THE YARN IMMEDIATELY AFTER BEING STRETCHED.
Claim 2
Independent Claim
163 words
A METHOD OF TREATING MOLECULARLY ORIENTABLE SYNTHETIC CONTINUOUS MULTIFILAMENT YARN OF SUBSTANTIALLY ZERO TWIST COMPRISING THE STEPS: (A) PROVIDING A SOURCE OF THE YARN, THE INDIVIDUAL FILAMENTS OF WHICH ARE SUBSTANTIALLY STRAIGHT AND PARALLEL; (B) LONGITUDINALLY FORWARDING THE YARN; (C) STRETCHING THE YARN BY TENSIONING IN A STRETCH ZONE TO ORIENT THE MOLECULES THEREOF; (D) REDUCING THE TENSION ON THE YARN; (E) APPLYING A PERIPHAL EFFORT ON THE YARN TO SLIGHTLY FALSE TWIST SAME WITH THE TWIST RUNNING BACK TOWARD THE STRETCH ZONE; (F) COATING THE FALSE TWISTED YARN WITH A SMALL AMOUNT OF A LIQUID EVANESCENT SOLVENT THEREOF; (G) DETWISTING THE YARN CARRYING THE SOLVENT; (H) THEN HEATING THE YARN UNDER LOW TENSION TO DISSIPATE THE ACTION OF THE SOLVENT AND TO RELAX SAME; AND (I) COLLECTING THE YARN IN AN ORDERLY MANNER UNDER A TENSION OF ABOUT 0.05-0.4 GRAM PER DENIER AND AT A SPEED OF ABOUT 4 TO 12% LESS THAN THE SPEED OF THE YARN IMMEDIATELY AFTER BEING STRETCHED.
References Cited (Backward Citations)
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US2321726A
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US2946181A
Cited
US3114235A
Cited
US3094834A
Cited
US3161706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |