Patent US2746839A successfully refreshed from Google Patents.
US2746839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of spinning shaped filaments of plastic materials
Assignee: PPG Industries Inc
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Filing: 1953-06-26
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Granted: 1956-05-22
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Expires: 1973-06-26
Abstract
No abstract record available.
Inventors
- 👤 Samuel M Terry
- 👤 Jr Joseph J Reis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:43
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/20; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN A METHOD OF SPINNING A THREAD OF PERIODICALLY VARIABLE DENIER AND UNIFORM PREDETERMINED LOBATE SECTION THROUGHTOUT THE LENGTH OF THE FILAMENT, THE STEPS WHICH COMPRISE SPINNING INTO A COAGULATING BATH A SPINNABLE SOLUTION OF A PLASTIC MATERIAL IN A LIQUID SOLVENT THEREFOR, THE SPINNING BEING EFFECTED THROUGH AN ORIFICE FORMED IN A PLATE, OF A SHAPE CORRESPONDING TO THE SHAPE OF THE SECTION DESIRED IN THE THREAD, SPINNING FURTHER BEING EFFECTED BY A DIFFERENTIAL OF PRESSURE UPON THE SOLUTION OF PLASTIC MATERIALS BETWEEN OPPOSED FACES OF THE PLATE AND BEING VARIABLE WITH THE VARIATION DESIRED IN THE DENIER OF THE THREAD AND WITHDRAWING THE FRESHLY FORMED THREAD WHILE MAINTAINING THE ANGLE THEREOF WITH RESPECT TO THE PLATE SUBSTANTIALLY CONSTANT DURING VARIATIONS OF PRESSURE WHEREBY TO OBVIATE BOUNCE AND INTERMITTENT SAGGING OF THE FILAMENT IN THE BATH AS IT IS SPUN.
Claim 2
Dependent Claim
141 words
IN A METHOD OF SPINNING A THREAD OF PERIODICALLY VARIABLE DENIER AND UNIFORM PREDETERMINED LOBATE SECTION THROUGHTOUT THE LENGTH OF THE FILAMENT, THE STEPS WHICH COMPRISE SPINNING INTO A COAGULATING BATH A SPINNABLE SOLUTION OF A PLASTIC MATERIAL IN A LIQUID SOLVENT THEREFOR, THE SPINNING BEING EFFECTED THROUGH AN ORIFICE FORMED IN A PLATE, OF A SHAPE CORRESPONDING TO THE SHAPE OF THE SECTION DESIRED IN THE THREAD, SPINNING FURTHER BEING EFFECTED BY A DIFFERENTIAL OF PRESSURE UPON THE SOLUTION OF PLASTIC MATERIALS BETWEEN OPPOSED FACES OF THE PLATE AND BEING VARIABLE WITH THE VARIATION DESIRED IN THE DENIER OF THE THREAD AND WITHDRAWING THE FRESHLY FORMED THREAD WHILE MAINTAINING THE ANGLE THEREOF WITH RESPECT TO THE PLATE SUBSTANTIALLY CONSTANT DURING VARIATIONS OF PRESSURE WHEREBY TO OBVIATE BOUNCE AND INTERMITTENT SAGGING OF THE FILAMENT IN THE BATH AS IT IS SPUN.
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) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |