Patent US2575781A successfully refreshed from Google Patents.
US2575781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of crimping textile fibers
Assignee: ALEXANDER SMITH Inc
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Filing: 1949-10-14
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Granted: 1951-11-20
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Expires: 1969-10-14
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Barach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:39
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
THE METHOD OF IMPARTING AN ARTIFICIAL CRIMP TO TEXTILE FIBERS, WHICH COMPRISE SPASSING SAID FIBERS THROUGH A ZONE CONTAINING A HEATED FLUID AND MOISTURE, MAINTAINING THE FIBERS IN SAID ZONE FOR A TIME TO PRESOFTEN THE FIBERS FOR CRIMPING, GRIPPING SAID FIBERS BETWEEN CLOSELY SPACED CONVEYOR SURFACES DISCHARGING INTO A SUBSTANTIALLY CLOSED ZONE, AND FORCING THE GRIPPED FIBERS INTO SAID ZONE AGAINST THE PRESSURE OF A MASS OF FIBERS HELD COMPACTED UNDER PRESSURE IN SAID ZONE, SAID PRESSURE BEING ADAPTED TO CAUSE THE FIBERS TO BE PROGRESSIVELY FOLDED OVER AND CRIMPED AS THEY ARE DELIVERED FROM SAID CONVEYOR SURFACES, HOLDING THE MASS OF CRIMPED FIBERS COMPACTED UNDER A SUBSTANTIALLY CONSTANT PRESSURE TO RETAIN THE CRIMP THEREIN, INTRODUCISNG A SETTING AGENT THE PRESSURE INTO SAID ZONE, TREATING THE MASS WHILE THUS COMPACTED WITH SAID SETTING AGENT UNDER CONDITIONS TO PRODUCE A PERMANENT SET OF SAID CRIMP IN SAID FIBERS, AND WITHDRAWING THE CRIMPED FIBERS FROM SAID ZONE.
Claim 2
Independent Claim
156 words
THE METHOD OF IMPARTING AN ARTIFICIAL CRIMP TO TEXTILE FIBERS, WHICH COMPRISE SPASSING SAID FIBERS THROUGH A ZONE CONTAINING A HEATED FLUID AND MOISTURE, MAINTAINING THE FIBERS IN SAID ZONE FOR A TIME TO PRESOFTEN THE FIBERS FOR CRIMPING, GRIPPING SAID FIBERS BETWEEN CLOSELY SPACED CONVEYOR SURFACES DISCHARGING INTO A SUBSTANTIALLY CLOSED ZONE, AND FORCING THE GRIPPED FIBERS INTO SAID ZONE AGAINST THE PRESSURE OF A MASS OF FIBERS HELD COMPACTED UNDER PRESSURE IN SAID ZONE, SAID PRESSURE BEING ADAPTED TO CAUSE THE FIBERS TO BE PROGRESSIVELY FOLDED OVER AND CRIMPED AS THEY ARE DELIVERED FROM SAID CONVEYOR SURFACES, HOLDING THE MASS OF CRIMPED FIBERS COMPACTED UNDER A SUBSTANTIALLY CONSTANT PRESSURE TO RETAIN THE CRIMP THEREIN, INTRODUCISNG A SETTING AGENT THE PRESSURE INTO SAID ZONE, TREATING THE MASS WHILE THUS COMPACTED WITH SAID SETTING AGENT UNDER CONDITIONS TO PRODUCE A PERMANENT SET OF SAID CRIMP IN SAID FIBERS, AND WITHDRAWING THE CRIMPED FIBERS FROM SAID ZONE.
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) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |