Patent US2846840A successfully refreshed from Google Patents.
US2846840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superpolyamidic threads and manufacture thereof
Assignee: Billion & Cie Soc
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Filing: 1953-05-18
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Granted: 1958-08-12
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Expires: 1973-05-18
Abstract
No abstract record available.
Inventors
- 👤 Billion Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:05
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A METHOD OF PRODUCING A YARN HAVING A SUPERPOLYAMIDIC BASE WHICH COMPRISES SUBJECTING SUPERPOLYAMIDIC YARNS EACH CONSISTING OF A PLURALITY OF FILAMENTS INDIVIDUALLY TO A HIGH TWISTING OF THE ORDER OF ABOUT 1500 TO ABOUT 4000 TURNS PER METER, PERMITTING THE RESULTING HIGHLY TWISTED YARNS TO SHRINK FREELY, SETTING THE DEFORMATION RESULTING FROM THE SHRINKAGE OF THE YARNS BACK TWISTING THE INDIVIDUAL YARNS UNTIL EACH INDIVIDUAL YARN HAS REACHED A FINAL TWIST IN ONE AND THE SAME PREDETERMINED DIRECTION OF AN INTERMEDIATE MAGNITUDE CORRESPONDING TO ABOUT 400 TO ABOUT 800 TURNS PER METER, AND FINALLY COMBINING A NUMBER OF YARNS HAVING AN IDENTICAL INTERMEDIATE TWIST IN SAID PREDETERMINED DIRECTION BY TWISTING THEM TOGETHER IN A DIRECTION OPPOSITE TO SAID PREDETERMINED DIRECTION TO A TWIST OF ASSEMBLY HAVING A MAGNITUDE EQUAL TO THAT OF THE INTERMEDIATE TWIST OF THE INDIVIDUAL YARNS, WHEREBY, THE INDIVIDUAL YARNS HAVE NO TWIST REMAINING AND ARE HELD TOGETHER BY SAID TWIST OF THE ASSEMBLY.
Claim 2
Independent Claim
158 words
A METHOD OF PRODUCING A YARN HAVING A SUPERPOLYAMIDIC BASE WHICH COMPRISES SUBJECTING SUPERPOLYAMIDIC YARNS EACH CONSISTING OF A PLURALITY OF FILAMENTS INDIVIDUALLY TO A HIGH TWISTING OF THE ORDER OF ABOUT 1500 TO ABOUT 4000 TURNS PER METER, PERMITTING THE RESULTING HIGHLY TWISTED YARNS TO SHRINK FREELY, SETTING THE DEFORMATION RESULTING FROM THE SHRINKAGE OF THE YARNS BACK TWISTING THE INDIVIDUAL YARNS UNTIL EACH INDIVIDUAL YARN HAS REACHED A FINAL TWIST IN ONE AND THE SAME PREDETERMINED DIRECTION OF AN INTERMEDIATE MAGNITUDE CORRESPONDING TO ABOUT 400 TO ABOUT 800 TURNS PER METER, AND FINALLY COMBINING A NUMBER OF YARNS HAVING AN IDENTICAL INTERMEDIATE TWIST IN SAID PREDETERMINED DIRECTION BY TWISTING THEM TOGETHER IN A DIRECTION OPPOSITE TO SAID PREDETERMINED DIRECTION TO A TWIST OF ASSEMBLY HAVING A MAGNITUDE EQUAL TO THAT OF THE INTERMEDIATE TWIST OF THE INDIVIDUAL YARNS, WHEREBY, THE INDIVIDUAL YARNS HAVE NO TWIST REMAINING AND ARE HELD TOGETHER BY SAID TWIST OF THE ASSEMBLY.
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) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |