US3262156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw extruder for spinning filaments
Assignee: Oerlikon Barmag AG
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Filing: 1965-04-14
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Granted: 1966-07-26
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Expires: 1985-04-14
Abstract
No abstract record available.
Inventors
- 👤 Jung Reinhold
- 👤 Albrecht Gerd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:27
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/06; B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/50; B29C48/78; B29C48/80; B29C48/83; B29C48/832; B29C48/86; B29C48/865; B29C48/03; B29C48/05; Y; Y10; Y10S; Y10S165/00; Y10S165/228; Y10S165/229
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
IN A SCREW EXTRUDER FOR SPINNING SYNTHETIC POLYMER FILAMENTS HAVING A HOUSING CONTAINING AN CONVEYOR SCREW AND A DISTRIBUTOR LINE FOR TRANSFER OF MOLTEN EXTRUDED POLYMER FROM SAID SCREW TO AT LEAST ONE SPINNING HEAD, THE IMPROVEMENT COMPRISING: A HEADPIECE AT THE EXIT END OF SAID SCREW, SAID HEADPIECE INCLUDING AN OUTER HEADBLOCK ATTACHED AS AN EXTENSION TO THE SCREW HOUSING AND CONTAINING AN AXIAL BORE THERETHROUGH OF GREATER DIAMETER THAN THE DIAMETER OF SAID SCREW; AND AN INNER CORE MEMBER REMOVABLY MOUNTED IN SAID AXIAL BORE AND CONTAINING A FLUID PASSAGEWAY INTERCONNECTING THE EXIT OPENING OF THE SCREW WITH SAID DISTRIBUTOR LINE.
Claim 2
Dependent Claim
103 words
IN A SCREW EXTRUDER FOR SPINNING SYNTHETIC POLYMER FILAMENTS HAVING A HOUSING CONTAINING AN CONVEYOR SCREW AND A DISTRIBUTOR LINE FOR TRANSFER OF MOLTEN EXTRUDED POLYMER FROM SAID SCREW TO AT LEAST ONE SPINNING HEAD, THE IMPROVEMENT COMPRISING: A HEADPIECE AT THE EXIT END OF SAID SCREW, SAID HEADPIECE INCLUDING AN OUTER HEADBLOCK ATTACHED AS AN EXTENSION TO THE SCREW HOUSING AND CONTAINING AN AXIAL BORE THERETHROUGH OF GREATER DIAMETER THAN THE DIAMETER OF SAID SCREW; AND AN INNER CORE MEMBER REMOVABLY MOUNTED IN SAID AXIAL BORE AND CONTAINING A FLUID PASSAGEWAY INTERCONNECTING THE EXIT OPENING OF THE SCREW WITH SAID DISTRIBUTOR LINE.
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) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |