US3115385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quenching process
Assignee: EIDP Inc
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Filing: 1962-09-19
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Granted: 1963-12-24
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Expires: 1982-09-19
Abstract
No abstract record available.
Inventors
- 👤 Beck William Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:42
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; D01D5/088
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
IN THE PROCESS FOR MELT-SPINNING POLYMER INTO FILAMENTS, THE IMPROVEMENT FOR SPINNINGFILAMENTS SELECTED FROM THE GROUP CONSISTING OF LINEAR POLYESTER FILAMENTS AND POLYPROPYLENE FILAMENTS AT HIGH RATES OF PRODUCTIVITY PER SPINNING POSITION WHICH COMPRISES EXTRUDING THE POLYMER IN A MOLTEN CONDITION THROUGH A SPINNERET HAVING A HIGH DENSITY OF ORIFICES SPACED LESS THAN 0.100 INCH APART FROM CENTER-TO-CENTER TO SPIN A PLURALITY OF FILAMENTS FROM THE FACE OF THE SPINNERET, COOLING THE EXTRUDED FILAMENTS TO A TEMPERATURE BELOW ABOUT 15*C. BELOW THE MELTING POINT OF THE POLYMER PRIOR TO A POINT 2 INCHES BELOW THE SIPNNERET BY DIRECTING IN FRONT OF THE SPINNERET FACE TO FORM A UNIFORM QUENCHING MEDIUM ADJACENT TO THE SPINNERET, A CURRENT OF STEAM SELECTED FROM THE GROUP CONSISTING OF DRY STEAM AND WET STEAM WHEREIN THE DROPLETS HAVE MAXIMUM DIAMETERS LESS THAN 0.5 OF THE DIAMETER OF THE FILAMENTS EXTRUDED, SAID MEDIUM BEING OTHERWISE FREE FROM LIQUID, AND PASSING THE FILAMENTS AS THEY EMERGE FROM THE SPINNERET ORIFICES THROUGH SAID MEDIUM SO AS TO BE UNIFORMLY TREATED.
Claim 2
Dependent Claim
172 words
IN THE PROCESS FOR MELT-SPINNING POLYMER INTO FILAMENTS, THE IMPROVEMENT FOR SPINNINGFILAMENTS SELECTED FROM THE GROUP CONSISTING OF LINEAR POLYESTER FILAMENTS AND POLYPROPYLENE FILAMENTS AT HIGH RATES OF PRODUCTIVITY PER SPINNING POSITION WHICH COMPRISES EXTRUDING THE POLYMER IN A MOLTEN CONDITION THROUGH A SPINNERET HAVING A HIGH DENSITY OF ORIFICES SPACED LESS THAN 0.100 INCH APART FROM CENTER-TO-CENTER TO SPIN A PLURALITY OF FILAMENTS FROM THE FACE OF THE SPINNERET, COOLING THE EXTRUDED FILAMENTS TO A TEMPERATURE BELOW ABOUT 15*C. BELOW THE MELTING POINT OF THE POLYMER PRIOR TO A POINT 2 INCHES BELOW THE SIPNNERET BY DIRECTING IN FRONT OF THE SPINNERET FACE TO FORM A UNIFORM QUENCHING MEDIUM ADJACENT TO THE SPINNERET, A CURRENT OF STEAM SELECTED FROM THE GROUP CONSISTING OF DRY STEAM AND WET STEAM WHEREIN THE DROPLETS HAVE MAXIMUM DIAMETERS LESS THAN 0.5 OF THE DIAMETER OF THE FILAMENTS EXTRUDED, SAID MEDIUM BEING OTHERWISE FREE FROM LIQUID, AND PASSING THE FILAMENTS AS THEY EMERGE FROM THE SPINNERET ORIFICES THROUGH SAID MEDIUM SO AS TO BE UNIFORMLY TREATED.
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) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |