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Patent US3307216A successfully refreshed from Google Patents.
US3307216A
Expired / Lapsed
US
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Annular spinning apparatus
Assignee: Celanese Corp
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Filing: 1964-10-05
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Granted: 1967-03-07
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Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 Dunn Albert
- 👤 Mountain Kings
- 👤 Russell Luther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:12
CPC Classifications
D; D01; D01D; D01D4/00; D01D4/06; B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/50; B29C48/69; B29C48/03; B29C48/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
AN ANNULAR MELT SPINNING PACK HAVING A SPINNERET CONTAINING A PLURALITY OF ORIFICES FOR SHAPING FILAMENTFORMING MATERIAL AS MOLTEN POLYMER IS EXTRUDED THERETHROUGH WHEREIN SAID SPINNING PACK IS INTERNALLY CONFINED IN AN ANNULAR SHAPE SURROUNDING AN EXTERNAL SPACE VOID, A GRANNULAR BED OF FINELY DIVIDED INERT MATERIAL CONTAINED WITHIN SAID SPINNING PACK, INLET MEANS FOR SAID MOLTEN POLYMER SURROUNDING THE OUTER PERIMETER OF SAID GRANULAR BED OTHER THAN THE PERIMETER LYING ADJACENT TO AND IN PARALLEL PLANE TO SAID SPINNERET, OUTLET MEANS FOR SAID MOLTEN POLYMER ESTABLISHING A BASE FOR SAID GRANULAR BED IN A CORRESPONDING SPACED RELATIONSHIP WITH SAID INLET MEANS TO PROVIDE A SUBSTANTIALLY UNIFORM DEPTH OF SAID INERT MATERIAL THROUGHOUT SAID GRANULAR BED BETWEEN SAID INLET MEANS AND SAID OUTLET MEANS AND COLLECTING MEANS FOR SAID MOLTEN POLYMER IN THE FORM OF AN INTERNAL ANNULAR SPACE IN SAID SPINNERET PACK CONNECTING SAID OUTLET MEANS AND SAID SPINNERET ORIFICES.
Claim 2
Dependent Claim
151 words
AN ANNULAR MELT SPINNING PACK HAVING A SPINNERET CONTAINING A PLURALITY OF ORIFICES FOR SHAPING FILAMENTFORMING MATERIAL AS MOLTEN POLYMER IS EXTRUDED THERETHROUGH WHEREIN SAID SPINNING PACK IS INTERNALLY CONFINED IN AN ANNULAR SHAPE SURROUNDING AN EXTERNAL SPACE VOID, A GRANNULAR BED OF FINELY DIVIDED INERT MATERIAL CONTAINED WITHIN SAID SPINNING PACK, INLET MEANS FOR SAID MOLTEN POLYMER SURROUNDING THE OUTER PERIMETER OF SAID GRANULAR BED OTHER THAN THE PERIMETER LYING ADJACENT TO AND IN PARALLEL PLANE TO SAID SPINNERET, OUTLET MEANS FOR SAID MOLTEN POLYMER ESTABLISHING A BASE FOR SAID GRANULAR BED IN A CORRESPONDING SPACED RELATIONSHIP WITH SAID INLET MEANS TO PROVIDE A SUBSTANTIALLY UNIFORM DEPTH OF SAID INERT MATERIAL THROUGHOUT SAID GRANULAR BED BETWEEN SAID INLET MEANS AND SAID OUTLET MEANS AND COLLECTING MEANS FOR SAID MOLTEN POLYMER IN THE FORM OF AN INTERNAL ANNULAR SPACE IN SAID SPINNERET PACK CONNECTING SAID OUTLET MEANS AND SAID SPINNERET ORIFICES.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |