Patent US3143784A successfully refreshed from Google Patents.
US3143784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of drawing for bulky yarn
Assignee: EIDP Inc
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Filing: 1962-07-05
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Granted: 1964-08-11
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Expires: 1982-07-05
Abstract
No abstract record available.
Inventors
- 👤 Paul T Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:50
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16; D02G1/168
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN THE PRODUCTION OF BULKY YARN FROM CONTINUOUS FILAMENTS OF SYNTHETIC LINEAR CONDENSATION POLYMER BY DRAWING THE FILAMENTS, CRIMPING THE FILAMENTS IN A TURBULENT STREAM OF HEATED COMPRESSIBLE FLUID TO IMPART A RANDOM, THREE-DIMENSIONAL, CURVILINEAR, EXTENSIBLE CONFIGURATION, AND COOLING THE FILAMENTS TO SET THE CRIMP, THE IMPROVEMENT OF CONDUCTING SAID PROCESS TO PROVIDE BULKY, CRIMPED YARN HAVING AN ELONGATION AT BREAK GREATER THAN 40%, BASED ON ELONGATION OCCURRING AFTER THE YARN HAS BEEN EXTENDED TO A LENGTH JUST SUFFICIENT TO REMOVE THE CRIMP, AND REDRAWING THE YARN AT TEMPERATURES BETWEEN 0* C. AND 130* C. TO 1.10 TO 1.50 TIMES SAID EXTENDED LENGTH TO PROVIDE A YARN HAVING THE APPEARANCE AND ME-
Claim 2
Dependent Claim
112 words
IN THE PRODUCTION OF BULKY YARN FROM CONTINUOUS FILAMENTS OF SYNTHETIC LINEAR CONDENSATION POLYMER BY DRAWING THE FILAMENTS, CRIMPING THE FILAMENTS IN A TURBULENT STREAM OF HEATED COMPRESSIBLE FLUID TO IMPART A RANDOM, THREE-DIMENSIONAL, CURVILINEAR, EXTENSIBLE CONFIGURATION, AND COOLING THE FILAMENTS TO SET THE CRIMP, THE IMPROVEMENT OF CONDUCTING SAID PROCESS TO PROVIDE BULKY, CRIMPED YARN HAVING AN ELONGATION AT BREAK GREATER THAN 40%, BASED ON ELONGATION OCCURRING AFTER THE YARN HAS BEEN EXTENDED TO A LENGTH JUST SUFFICIENT TO REMOVE THE CRIMP, AND REDRAWING THE YARN AT TEMPERATURES BETWEEN 0* C. AND 130* C. TO 1.10 TO 1.50 TIMES SAID EXTENDED LENGTH TO PROVIDE A YARN HAVING THE APPEARANCE AND ME-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |