Patent US2575839A successfully refreshed from Google Patents.
US2575839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for crimping uncrosslinked fibers
Assignee: ALEXANDER SMITH Inc
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Filing: 1948-12-15
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Granted: 1951-11-20
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Expires: 1968-12-15
Abstract
No abstract record available.
Inventors
- 👤 Leo W Rainard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:08
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
THE METHOD OF IMPARTING A PERMANENT ARTIFICIAL CRIMP TO VEGETABLE FIBERS AND UNCROSSLINKED THERMOPLASTIC SYNTHETIC FIBERS, WHICH COMPRISES GRIPPING SAID FIBERS BETWEEN CLOSELY SPACED CONVEYOR SURFACES DISCHARGING INTO A SUBSTANTIALLY CLOSED CRIMPING ZONE, AND FORCING THE GRIPPED FIBERS INTO SAID ZONE AGAINST THE PRESSURE OF A MASS OF FIBERS HELD COMPACED UNDER PRESSURE IN SAIDA 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 PRES-
Claim 2
Independent Claim
91 words
THE METHOD OF IMPARTING A PERMANENT ARTIFICIAL CRIMP TO VEGETABLE FIBERS AND UNCROSSLINKED THERMOPLASTIC SYNTHETIC FIBERS, WHICH COMPRISES GRIPPING SAID FIBERS BETWEEN CLOSELY SPACED CONVEYOR SURFACES DISCHARGING INTO A SUBSTANTIALLY CLOSED CRIMPING ZONE, AND FORCING THE GRIPPED FIBERS INTO SAID ZONE AGAINST THE PRESSURE OF A MASS OF FIBERS HELD COMPACED UNDER PRESSURE IN SAIDA 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 PRES-
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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 |