Patent US2548181A successfully refreshed from Google Patents.
US2548181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of crimped filaments
Assignee: Individual
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Filing: 1946-03-11
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Granted: 1951-04-10
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Expires: 1966-03-11
Abstract
No abstract record available.
Inventors
- 👤 Kohorn Henry Von
- 👤 Kohorn Ralph S Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:24
CPC Classifications
D; D01; D01D; D01D10/00; D01D10/04; D01D10/049; D01F; D01F11/00; D01F11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN THE TREATMENT OF VISCOSE FIBERS FOR CRIMPING PURPOSES AND THE LIKE, THE METHOD STEPS WHICH CONSIST IN PRODUCING A LAYER-LIKE FORMATION OF WETTED STAPLE FIBERS BY STREWING (BY DROPPING LOOSELY) THE WETTED FIBERS INTO A LAYER FORMATION OF LOOSE FIBERS WITH THE FIBERS IN SUPERPOSED RELATIONS OF PATTERNLESS TYPE AND WITH THE FIBERS OF THE LAYER HAVING LIMITED CONTACT WITH ADJACENT SUPERPOSED FIBERS TO PRODUCE A FORMATION HAVING A THICKNESS OF NOT EXCEEDING TWO INCHES, AND THEN SUBJECTING THE FIBERS OF THE FORMATION TO THE DRYING ACTION OF A HIGH-FREQUENCY ELECTRIC CURRENT FIELD UPON THE FORMATION FOR A LIMITED PERIOD NOT EXCEEDING ONE MINUTE OF TIME AND WITH THE FORMATION FIBER ARRANGEMENT UNDISTURBED DURING SUCH PERIOD OF DRYING ACTIVITY BY THE FIELD, TO THEREBY PRODUCE FIBER CRIMPING INTENSITY APPROACHING MAXIMUM BY NATURAL SHRINKAGE ACTIVITY OF THE INDIVIDUAL FIBERS.
Claim 2
Dependent Claim
139 words
IN THE TREATMENT OF VISCOSE FIBERS FOR CRIMPING PURPOSES AND THE LIKE, THE METHOD STEPS WHICH CONSIST IN PRODUCING A LAYER-LIKE FORMATION OF WETTED STAPLE FIBERS BY STREWING (BY DROPPING LOOSELY) THE WETTED FIBERS INTO A LAYER FORMATION OF LOOSE FIBERS WITH THE FIBERS IN SUPERPOSED RELATIONS OF PATTERNLESS TYPE AND WITH THE FIBERS OF THE LAYER HAVING LIMITED CONTACT WITH ADJACENT SUPERPOSED FIBERS TO PRODUCE A FORMATION HAVING A THICKNESS OF NOT EXCEEDING TWO INCHES, AND THEN SUBJECTING THE FIBERS OF THE FORMATION TO THE DRYING ACTION OF A HIGH-FREQUENCY ELECTRIC CURRENT FIELD UPON THE FORMATION FOR A LIMITED PERIOD NOT EXCEEDING ONE MINUTE OF TIME AND WITH THE FORMATION FIBER ARRANGEMENT UNDISTURBED DURING SUCH PERIOD OF DRYING ACTIVITY BY THE FIELD, TO THEREBY PRODUCE FIBER CRIMPING INTENSITY APPROACHING MAXIMUM BY NATURAL SHRINKAGE ACTIVITY OF THE INDIVIDUAL FIBERS.
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) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |