Patent US7075669B2 successfully refreshed from Google Patents.
Patent US3067461A successfully refreshed from Google Patents.
US3067461A
Expired / Lapsed
US
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Apparatus for producing twisted filament yarn
Assignee: Monsanto Chemicals Ltd
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Filing: 1960-11-07
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Granted: 1962-12-11
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Expires: 1980-11-07
Abstract
No abstract record available.
Inventors
- 👤 George B Hughey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:44
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/0266
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A MELT-SPINNING APPARATUS FOR USE IN THE PRODUCTION OF INDIVIDUALLY TWISTED FILAMENTS FROM A THERMOPLASTIC FILAMENT-FORMING POLYMER COMPRISING A SPINNERET FOR EXTRUDING SAID POLYMER IN A MOLTEN CONDITION IN A YARN PATH EXTENDING GENERALLY DOWNWARD ALONG A VERTICAL EXTRUSION LINE AT A PREDETERMINED EXTRUSION RATE, MEANS FOR COLLECTING THE RESULTING FILAMENTS IN PACKAGE FORM AT A PREDETERMINED INCREASED COLLECTION RATE POSITIONED BELOW SAID SPINNERET, A SPINNING CHAMBER ADAPTED TO RECEIVE THE STREAMS OF POLYMER IMMEDIATELY UPON EXTRUSION THEREOF WHEREIN THE STREAMS ARE COOLED INTO HARDENED FILAMENTS, AT LEAST ONE ROTATABLY MOUNTED MEMBER HAVING A CONTINUOUS HELICAL RIB PROJECTING THEREFROM AND EXTENDING LONGITUDINALLY THEREOF, SAID MEMBER BEING POSITIONED WITHIN SAID CHAMBER IN THE YARN PATH AT A POINT WHERE THE
Claim 2
Dependent Claim
119 words
A MELT-SPINNING APPARATUS FOR USE IN THE PRODUCTION OF INDIVIDUALLY TWISTED FILAMENTS FROM A THERMOPLASTIC FILAMENT-FORMING POLYMER COMPRISING A SPINNERET FOR EXTRUDING SAID POLYMER IN A MOLTEN CONDITION IN A YARN PATH EXTENDING GENERALLY DOWNWARD ALONG A VERTICAL EXTRUSION LINE AT A PREDETERMINED EXTRUSION RATE, MEANS FOR COLLECTING THE RESULTING FILAMENTS IN PACKAGE FORM AT A PREDETERMINED INCREASED COLLECTION RATE POSITIONED BELOW SAID SPINNERET, A SPINNING CHAMBER ADAPTED TO RECEIVE THE STREAMS OF POLYMER IMMEDIATELY UPON EXTRUSION THEREOF WHEREIN THE STREAMS ARE COOLED INTO HARDENED FILAMENTS, AT LEAST ONE ROTATABLY MOUNTED MEMBER HAVING A CONTINUOUS HELICAL RIB PROJECTING THEREFROM AND EXTENDING LONGITUDINALLY THEREOF, SAID MEMBER BEING POSITIONED WITHIN SAID CHAMBER IN THE YARN PATH AT A POINT WHERE THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |