US3000168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing bulky yarn
Assignee: Akzona Inc
•
Filing: 1957-08-21
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Granted: 1961-09-19
•
Expires: 1977-08-21
Abstract
No abstract record available.
Inventors
- 👤 Hilliard H Penland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:35
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16; D02G1/165; D02G1/168
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A METHOD OF BULKING FRESHLY SPUN VISCOSE RAYON YARN COMPRISING EXTRUDING VISCOSE INTO AN ACID SETTING BATH TO FORM MULTIFILAMENT YARN, WITHDRAWING SAID YARN FROM SAID SETTING BATH, PASSING SAID YARN THROUGH A SECOND WEAKLY ACIDIC BATH, IMPARTING STRETCH TO SAID YARN, DIRECTING SAID YARN THROUGH A ZONE OF REDUCED TENSION DIRECTING SAID YARN INTO AN AIR JET DURING ITS TRAVEL THROUGH SAID ZONE AND SUBJECTING THE YARN TO THE ACTION OF A STRONG CURRENT OF AIR TO INPART BULK OT SAID YARN AND THEREAFTER TWISTING AND COLLECTING SAID YARN IN A ROTATING CENTRIFUGAL SPIN POT.
Claim 2
Independent Claim
96 words
A METHOD OF BULKING FRESHLY SPUN VISCOSE RAYON YARN COMPRISING EXTRUDING VISCOSE INTO AN ACID SETTING BATH TO FORM MULTIFILAMENT YARN, WITHDRAWING SAID YARN FROM SAID SETTING BATH, PASSING SAID YARN THROUGH A SECOND WEAKLY ACIDIC BATH, IMPARTING STRETCH TO SAID YARN, DIRECTING SAID YARN THROUGH A ZONE OF REDUCED TENSION DIRECTING SAID YARN INTO AN AIR JET DURING ITS TRAVEL THROUGH SAID ZONE AND SUBJECTING THE YARN TO THE ACTION OF A STRONG CURRENT OF AIR TO INPART BULK OT SAID YARN AND THEREAFTER TWISTING AND COLLECTING SAID YARN IN A ROTATING CENTRIFUGAL SPIN POT.
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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) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |