US3009234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making uniform papermakers' felts with pre-dyed guide lines
Assignee: Appleton Mills
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Filing: 1959-06-30
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Granted: 1961-11-21
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Expires: 1979-06-30
Abstract
No abstract record available.
Inventors
- 👤 Andrew F Blackburn
- 👤 Alexander A Lukshin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:44
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/0027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
THE METHOD OF MAKING PAPERMAKERS'' FELTS COMPOSED PREDOMINANTLY OF HEAT-SHRINKABLE SYNTHETIC FIBERS HAVING DYED GUIDE LINES COMPRISING SUBJECTING A PORTION OF SAID SYNTHETIC FIBERS TO A DISPERSE TYPE DYE IN A WATER-ALCOHOL SYSTEM MAINTAINED AT A TEMPERATURE NOT EXCEEDING 125* F., DRYING SAID PORTION OF THE FIBERS AT A TEMPERATURE NOT EXCEEDING THE TEMPERATURE OF THE DYE BATH, WEAVING A FABRIC OF SAID SYNTHETIC FIBERS INCORPORATING AS GUIDE LINES SAID DYED AND DRIED PORTION, PLACING SAID FABRIC UNDER TENSION, HEATING THE TENSION FABRIC TO ESTABLISH A TEMPERATURE IN THE FABRIC OF FROM ABOUT 200*F. TO ABOUT 400*F. TO PROVIDE THERMAL SHRINKAGE IN THE FABRIC, HEATSET THE FABRIC AND SET THE DYED PORTION OF THE YARNS WHEREBY THE WOVEN FELT INCLUDING THE DYED GUIDE LINES HAS SUBSTANTIALLY UNIFORM STRUCTURE.
Claim 2
Independent Claim
128 words
THE METHOD OF MAKING PAPERMAKERS'' FELTS COMPOSED PREDOMINANTLY OF HEAT-SHRINKABLE SYNTHETIC FIBERS HAVING DYED GUIDE LINES COMPRISING SUBJECTING A PORTION OF SAID SYNTHETIC FIBERS TO A DISPERSE TYPE DYE IN A WATER-ALCOHOL SYSTEM MAINTAINED AT A TEMPERATURE NOT EXCEEDING 125* F., DRYING SAID PORTION OF THE FIBERS AT A TEMPERATURE NOT EXCEEDING THE TEMPERATURE OF THE DYE BATH, WEAVING A FABRIC OF SAID SYNTHETIC FIBERS INCORPORATING AS GUIDE LINES SAID DYED AND DRIED PORTION, PLACING SAID FABRIC UNDER TENSION, HEATING THE TENSION FABRIC TO ESTABLISH A TEMPERATURE IN THE FABRIC OF FROM ABOUT 200*F. TO ABOUT 400*F. TO PROVIDE THERMAL SHRINKAGE IN THE FABRIC, HEATSET THE FABRIC AND SET THE DYED PORTION OF THE YARNS WHEREBY THE WOVEN FELT INCLUDING THE DYED GUIDE LINES HAS SUBSTANTIALLY UNIFORM STRUCTURE.
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) | 1964-11-20 | 1965-05-22 | 1965-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-20 | 1969-05-22 | 1969-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-20 | 1973-05-22 | 1973-11-21 | $7700.00 | Window Closed / Lapsed |