US3237392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing bulked yarn
Assignee: Moulinage et Retorderie de Chavanoz SA
•
Filing: 1963-08-14
•
Granted: 1966-03-01
•
Expires: 1983-08-14
Abstract
No abstract record available.
Inventors
- 👤 Crouzet Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:20
CPC Classifications
D; D02; D02J; D02J13/00; D02J13/001; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/0266
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
IN A PROCESS WHEREIN THERMOPLASTIC FILAMENTS ARE TWISTED, HEAT SET AND UNTWISTED, THE IMPORVEMENT WHICH COMPRISES PRE-HEATING SAID FILAMENTS IN A ZONE WHILE RESTRAINING THE FILAMENTS FROM RECEIVING TWIST, HEATING IN A SECOND ZONE UNTIL THE FILAMENTS ARE SUFFICIENTLY MODIFIED TO OVERCOME THE RESTRAINING FORCE AND ACCEPT THE IMPOSED TWIST, AND RAPIDLY COOLING SAID YARNS BY PASSING THROUGH A COOLING ZONE AFTER HEAT-SETTING, BUT PRIOR TO UNTWISTING SAID YARN.
Claim 2
Dependent Claim
69 words
IN A PROCESS WHEREIN THERMOPLASTIC FILAMENTS ARE TWISTED, HEAT SET AND UNTWISTED, THE IMPORVEMENT WHICH COMPRISES PRE-HEATING SAID FILAMENTS IN A ZONE WHILE RESTRAINING THE FILAMENTS FROM RECEIVING TWIST, HEATING IN A SECOND ZONE UNTIL THE FILAMENTS ARE SUFFICIENTLY MODIFIED TO OVERCOME THE RESTRAINING FORCE AND ACCEPT THE IMPOSED TWIST, AND RAPIDLY COOLING SAID YARNS BY PASSING THROUGH A COOLING ZONE AFTER HEAT-SETTING, BUT PRIOR TO UNTWISTING SAID YARN.
References Cited (Backward Citations)
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US2758358A
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US2956393A
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US2943433A
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US2891375A
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US3058291A
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |