US2741893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing crinkled yarn
Assignee: Moulinage et Retorderie de Chavanoz SA
•
Filing: 1953-01-14
•
Granted: 1956-04-17
•
Expires: 1973-01-14
Abstract
No abstract record available.
Inventors
- 👤 Vandamme Louis
- 👤 Rouyer Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:31
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE METHOD OF PRODUCING A CRINKLE YARN FROM A BUNDLE SUBSTANTIALLY PARALLEL, SYNTHETIC THERMOSPLASTIC FILAMENTS, WHICH COMPRISES PASSING SAID BUNDLE THROUGH A HEATING MEDIUM, APPLYING A FALSE TWIST TO THE BUNDLE IN A TWISTING ZONE AFTER EMERGING FROM SAID HEATING MEDIUM AND WHILE UNCONFINED BETWEEN SAID HEATING MEDIUM AND SAID TWISTING ZONE TO CAUSE THE TWIST TO FEED ALONG THE BUNDLE BACKWARDLY INTO SAID HEATING MEDIUM, AND CONFINING THE BUNDLE TO ARREST THE TWIST AT A POINT WITHIN SAID HEATING MEDIUM TO PREVENT THE TWIST FROM FEEDING TO THE BUNDLE IN SAID MEDIUM IN ADVANCE OF THE CONFINING POINT WHEREBY THE CRINKLE BECOMES SET BETWEEN THE CONFINING POINT AND THE FALSE TWISTING ZONE AND THE TWIST DISAPPEARS AGAIN AFTER THE BUNDLE PASSES THE TWISTING ZONE.
Claim 2
Independent Claim
125 words
THE METHOD OF PRODUCING A CRINKLE YARN FROM A BUNDLE SUBSTANTIALLY PARALLEL, SYNTHETIC THERMOSPLASTIC FILAMENTS, WHICH COMPRISES PASSING SAID BUNDLE THROUGH A HEATING MEDIUM, APPLYING A FALSE TWIST TO THE BUNDLE IN A TWISTING ZONE AFTER EMERGING FROM SAID HEATING MEDIUM AND WHILE UNCONFINED BETWEEN SAID HEATING MEDIUM AND SAID TWISTING ZONE TO CAUSE THE TWIST TO FEED ALONG THE BUNDLE BACKWARDLY INTO SAID HEATING MEDIUM, AND CONFINING THE BUNDLE TO ARREST THE TWIST AT A POINT WITHIN SAID HEATING MEDIUM TO PREVENT THE TWIST FROM FEEDING TO THE BUNDLE IN SAID MEDIUM IN ADVANCE OF THE CONFINING POINT WHEREBY THE CRINKLE BECOMES SET BETWEEN THE CONFINING POINT AND THE FALSE TWISTING ZONE AND THE TWIST DISAPPEARS AGAIN AFTER THE BUNDLE PASSES THE TWISTING ZONE.
References Cited (Backward Citations)
US2089199A
Cited
US2111209A
Cited
US2111211A
Cited
US2080905A
Cited
US2244832A
Cited
US2463618A
Cited
US2477909A
Cited
US2475922A
Cited
US2463620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |