US2888733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the fixation of pressure crimped synthetic fibers
Assignee: Inventa AG fuer Forschung und Patentverwertung
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Filing: 1954-06-18
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Granted: 1959-06-02
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Expires: 1974-06-18
Abstract
No abstract record available.
Inventors
- 👤 Wegener Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:08
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12; D02G1/127
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS FOR THE FIXATION OF PRESSURE CRIMPED SYNTHETIC POLYCAPROLACTAM FIBERS BY HEAT-SETTING IN A CRIMPING CHAMBER WITHOUT INJECTION OF SETTING AGENTS INTO SAID CHAMBER, WHICH COMPRISES FEEDING A ROPE OF POLYCAPROLACTAM FIBERS HAVING A MOISTURTE CONTENT OF 5 TO 10 PERCENT INTO A CRIMPING CHAMBER AT A SPEED OF 100 TO 250 METERS PER MINUTE, GENERATING A HOT, MOIST, SETTING ATMOSPHERE BY VIRTUE OF THE FOLDING OF THE FIBERS, THE HEAT GENERATED BY THE FOLDING OF THE FIBERS MAINTAINING THE CRIMPING CHAMBER AT A TEMPERATURE OF APPROXIMATELY 120-130* C.
Claim 2
Dependent Claim
90 words
A PROCESS FOR THE FIXATION OF PRESSURE CRIMPED SYNTHETIC POLYCAPROLACTAM FIBERS BY HEAT-SETTING IN A CRIMPING CHAMBER WITHOUT INJECTION OF SETTING AGENTS INTO SAID CHAMBER, WHICH COMPRISES FEEDING A ROPE OF POLYCAPROLACTAM FIBERS HAVING A MOISTURTE CONTENT OF 5 TO 10 PERCENT INTO A CRIMPING CHAMBER AT A SPEED OF 100 TO 250 METERS PER MINUTE, GENERATING A HOT, MOIST, SETTING ATMOSPHERE BY VIRTUE OF THE FOLDING OF THE FIBERS, THE HEAT GENERATED BY THE FOLDING OF THE FIBERS MAINTAINING THE CRIMPING CHAMBER AT A TEMPERATURE OF APPROXIMATELY 120-130* C.
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) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |