US2707306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melt spinning apparatus
Assignee: Celanese Corp
•
Filing: 1952-08-22
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Granted: 1955-05-03
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Expires: 1972-08-22
Abstract
No abstract record available.
Inventors
- 👤 Weber Harold
- 👤 Robert H Roughsedge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:06
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/06; B; B29; B29C; B29C48/00; B29C48/03; B29C48/05; B29C48/25; B29C48/36; B29C48/365; B29C48/37; B29C48/375; B29C48/387; B29C48/395; B29C48/397; D01D1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
AN APPARATUS FO THE PRODUCTION OF FILAMENTARY MATERIALS BY THE MELT-SPINNING OF A FILAMENT-FORMING MATERIAL, COMPRISING A CHAMBER, MEANS FOR INTERMITTENTLY ENTERING A FILAMENT-FORMING MATERIAL INTO SAID CHAMBER MEANS FOR APPLYING A VACUUM TO SAID CHAMBER TO REMOVE GASES AND WATER VAPOR FROM THE FILAMENT-FORMING MATERIAL, MEANS FOR AUTOMATICALLY DISCONNECTING THE VACUUM APPLYING MEANS FROM SAID CHAMBER DURING THE ENTRANCE OF THE FILAMENT-FORMING MATERIAL INTO SAID CHAMBER, A HEATED JEACKET, A FEED SCREW FOR FEEDING THE FILAMENT-FORMING MATERIAL FROM SAID CHAMBER TO AND THROUGH SAID JACKET, WHEREBY THE FILAMENT-FORMING MATERIAL IS CAUSED BY MELT AND PRESSURE IS APPLIED TO THE MOLTEN MATERIAL TO FREE SAID MOLTEN MATERIAL OF VOIDS AND TO BRING THE SAME TO SUBSTANTIALLY UNIFORM DENSITY AND A SPINNERETTE FOR CONVERTING THE MOLTEN FILAMENT-FORMING MATERIAL INTO FILMENTARY MATERIAL.
Claim 2
Independent Claim
130 words
AN APPARATUS FO THE PRODUCTION OF FILAMENTARY MATERIALS BY THE MELT-SPINNING OF A FILAMENT-FORMING MATERIAL, COMPRISING A CHAMBER, MEANS FOR INTERMITTENTLY ENTERING A FILAMENT-FORMING MATERIAL INTO SAID CHAMBER MEANS FOR APPLYING A VACUUM TO SAID CHAMBER TO REMOVE GASES AND WATER VAPOR FROM THE FILAMENT-FORMING MATERIAL, MEANS FOR AUTOMATICALLY DISCONNECTING THE VACUUM APPLYING MEANS FROM SAID CHAMBER DURING THE ENTRANCE OF THE FILAMENT-FORMING MATERIAL INTO SAID CHAMBER, A HEATED JEACKET, A FEED SCREW FOR FEEDING THE FILAMENT-FORMING MATERIAL FROM SAID CHAMBER TO AND THROUGH SAID JACKET, WHEREBY THE FILAMENT-FORMING MATERIAL IS CAUSED BY MELT AND PRESSURE IS APPLIED TO THE MOLTEN MATERIAL TO FREE SAID MOLTEN MATERIAL OF VOIDS AND TO BRING THE SAME TO SUBSTANTIALLY UNIFORM DENSITY AND A SPINNERETTE FOR CONVERTING THE MOLTEN FILAMENT-FORMING MATERIAL INTO FILMENTARY MATERIAL.
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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) | 1958-05-02 | 1958-11-01 | 1959-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-02 | 1962-11-01 | 1963-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-02 | 1966-11-01 | 1967-05-03 | $7700.00 | Window Closed / Lapsed |