US3135811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for uniformly cooling melt-spun filaments
Assignee: Imperial Chemical Industries Ltd
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Filing: 1961-11-13
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Granted: 1964-06-02
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Expires: 1981-11-13
Abstract
No abstract record available.
Inventors
- 👤 Barnett Thomas Rosslyn
- 👤 Warner Harold Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:13
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; D01D5/088; D01D5/092
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A MELT-SPINNING PROCESS OF THE TYPE WHEREIN A MOLTEN SYNTHETIC POLYMER IS EXTRUDED DOWNWARDS THROUGH A FILTER PACK AND AT LEAST ONE MULTIHOLE SPINNERET AND WOUND UPON A YARN COLLECTING MEANS CHARACTERIZED IN THAT THE FILAMENTS ARE UNIFORMLY COOLED BY A STREAM OF GAS WHICH IS DIRECTED RADIALLY OUTWARDS FROM A VERTICAL CYLINDRICAL SURFACE LOCATED SUBSDTANTIALLY IN THE CENTER OF AN ARRAY OF FILAMENTS EMANATING FROM THE SPINNERET AND AT A DISTANCE FROM
Claim 2
Dependent Claim
73 words
A MELT-SPINNING PROCESS OF THE TYPE WHEREIN A MOLTEN SYNTHETIC POLYMER IS EXTRUDED DOWNWARDS THROUGH A FILTER PACK AND AT LEAST ONE MULTIHOLE SPINNERET AND WOUND UPON A YARN COLLECTING MEANS CHARACTERIZED IN THAT THE FILAMENTS ARE UNIFORMLY COOLED BY A STREAM OF GAS WHICH IS DIRECTED RADIALLY OUTWARDS FROM A VERTICAL CYLINDRICAL SURFACE LOCATED SUBSDTANTIALLY IN THE CENTER OF AN ARRAY OF FILAMENTS EMANATING FROM THE SPINNERET AND AT A DISTANCE FROM
References Cited (Backward Citations)
CA572083A
Cited
US2730758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |