US2908937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the manufacture of yarn
Assignee: Akzona Inc
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Filing: 1955-12-29
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Granted: 1959-10-20
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Expires: 1975-12-29
Abstract
No abstract record available.
Inventors
- 👤 Hesselink Frans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:23
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN APPARATUS FOR THE MANUFACTURE OF RAYON INCLUDING A SPINNERET TO EXTRUDE A SPINNING SOLUTION INTO AN ACID COAGULATING BATH TO FORM YARN THEREFROM AND MEANS TO WITHDRAW THE YARN FROM THE BATH AT A HIGHER VELOCITY THAN THE RATE OF EXTRUSION, THE IMPROVEMENT WHICH COMPRISES A SPINNING TUBE MOUNTED CONCENTRIC WITH THE SPINNERET, SAID SPINNING TUBE HAVING TWO CYLINDRICAL TUBE SECTIONS OF DIFFERENT DIAMETERS CONNECTED INTERMEDIATE THE ENDS THEREOF BY A FRUSTO-CONICAL SECTION, THE SMALLER TUBE SECTION BEING SLIGHTLY LARGER THAN THE DIAMETER OF THE SPINNERET AND DISPOSED ADJACENT THERETO WITH THE LARGER
Claim 2
Dependent Claim
94 words
IN APPARATUS FOR THE MANUFACTURE OF RAYON INCLUDING A SPINNERET TO EXTRUDE A SPINNING SOLUTION INTO AN ACID COAGULATING BATH TO FORM YARN THEREFROM AND MEANS TO WITHDRAW THE YARN FROM THE BATH AT A HIGHER VELOCITY THAN THE RATE OF EXTRUSION, THE IMPROVEMENT WHICH COMPRISES A SPINNING TUBE MOUNTED CONCENTRIC WITH THE SPINNERET, SAID SPINNING TUBE HAVING TWO CYLINDRICAL TUBE SECTIONS OF DIFFERENT DIAMETERS CONNECTED INTERMEDIATE THE ENDS THEREOF BY A FRUSTO-CONICAL SECTION, THE SMALLER TUBE SECTION BEING SLIGHTLY LARGER THAN THE DIAMETER OF THE SPINNERET AND DISPOSED ADJACENT THERETO WITH THE LARGER
References Cited (Backward Citations)
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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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |