US3608299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing torque stretch yarns
Assignee: EIDP Inc
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Filing: 1970-04-15
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Granted: 1971-09-28
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Expires: 1990-04-15
Abstract
Abstract A PROCESS IS DISCLOSED FOR PRODUCING UNIFORM TORQUE STRETCH YARNS USEFUL FOR KNITTING STRETCH-APPAREL, SUCH AS LADIES'' SHEER HOSIERY. YARN IS FALSE-TWISTED WITH A FLUIDTORQUE JET DEVICE AND THE TWIST IS HEAT-SET IN A JET OF HEATED FLUID. CONTINUOUS HIGH SPEED OPERATION OF THE PROCESS, IN COMBINATION WITH A DRAWING OPERATION, IS ILLUSTRATED FOR PROVIDING HIGH LEVELS OF SET-TWIST IN LOW DENIER YARN. D R A W I N G
Inventors
- 👤 Alfred H Dugas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:37
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/229; D02G; D02G1/00; D02G1/02
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |