US2575833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for crimping textile fibers
Assignee: ALEXANDER SMITH Inc
•
Filing: 1949-10-14
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Granted: 1951-11-20
•
Expires: 1969-10-14
Abstract
No abstract record available.
Inventors
- 👤 Julius H Pfau
- 👤 Leo W Rainard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:16
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
THE METHOD OF IMPARTING A PERMENENT ARTIFICIAL CRIMP TO TEXTILE FIBERS, WHICH COMPRISES 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, INTRODUCING SUPERHEATED WATER UNDER PRESSURE INTO SAID ZONE, TRESTING THE MASS WHILE THUS COMPACTED WITH SAID SUPERHEATED WATER 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
129 words
THE METHOD OF IMPARTING A PERMENENT ARTIFICIAL CRIMP TO TEXTILE FIBERS, WHICH COMPRISES 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, INTRODUCING SUPERHEATED WATER UNDER PRESSURE INTO SAID ZONE, TRESTING THE MASS WHILE THUS COMPACTED WITH SAID SUPERHEATED WATER 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)
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US2435891A
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US2321757A
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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 |