US2991147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of sintered multifilamentary structures
Assignee: British Nylon Spinners Ltd
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Filing: 1958-07-16
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Granted: 1961-07-04
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Expires: 1978-07-16
Abstract
No abstract record available.
Inventors
- 👤 Thomas Gwilym Garrod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:44
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A PROCESS FOR THE MANUFACTURE OF SINTERED MULTIFILAMENTARY STRUCTURES WHICH CONSISTS ESSENTIALLY IN THE STEPS OF MELT-SPINNING A MACROMOLECULAR SYNTHETIC LINEAR POLYMER AND EXTRUDING THE SAME DOWNWARDS AS A PLURALITY OF INDEPENDENT FILAMENTS, URGING SAID FILAMENTS, WHILE INDEPENDENT OF EACH OTHER, AND WHILE STILL INCOMPLETELY SOLIDIFIED, DIRECTLY INTO SUBSTANTIALLY TANGENTIAL CONTACT WITH A CONVEX AQUEOUS SURFACE, WHEREBY SAID FILAMENTS ARE CAUSED TO CLUSTER TOGETHER DUE LARGELY TO THE HIGH SURFACE TENSION OF THE SAID AQUEOUS SURFACE, GLIDING SAID FILAMENTS THROUGH SAID SURFACE WHEREBY THE CLUSTERED FILAMENTS ARE QUENCHED AND THE SAME ARE SUBSTANTIALLY SIMULTANEOUSLY SINTERED TOGETHER AT POINTS OF CONTACT WITH ONE ANOTHER TO FORM A COMPOSITE SINTERED MULTIFILAMENT STRUCTURE, AND THEREAFTER WINDING UP SAID STRUCTURE.
Claim 2
Dependent Claim
116 words
A PROCESS FOR THE MANUFACTURE OF SINTERED MULTIFILAMENTARY STRUCTURES WHICH CONSISTS ESSENTIALLY IN THE STEPS OF MELT-SPINNING A MACROMOLECULAR SYNTHETIC LINEAR POLYMER AND EXTRUDING THE SAME DOWNWARDS AS A PLURALITY OF INDEPENDENT FILAMENTS, URGING SAID FILAMENTS, WHILE INDEPENDENT OF EACH OTHER, AND WHILE STILL INCOMPLETELY SOLIDIFIED, DIRECTLY INTO SUBSTANTIALLY TANGENTIAL CONTACT WITH A CONVEX AQUEOUS SURFACE, WHEREBY SAID FILAMENTS ARE CAUSED TO CLUSTER TOGETHER DUE LARGELY TO THE HIGH SURFACE TENSION OF THE SAID AQUEOUS SURFACE, GLIDING SAID FILAMENTS THROUGH SAID SURFACE WHEREBY THE CLUSTERED FILAMENTS ARE QUENCHED AND THE SAME ARE SUBSTANTIALLY SIMULTANEOUSLY SINTERED TOGETHER AT POINTS OF CONTACT WITH ONE ANOTHER TO FORM A COMPOSITE SINTERED MULTIFILAMENT STRUCTURE, AND THEREAFTER WINDING UP SAID 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) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |