US2955320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial fiber production
Assignee: Canadian Celanese Ltd
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Filing: 1957-06-03
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Granted: 1960-10-11
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Expires: 1977-06-03
Abstract
No abstract record available.
Inventors
- 👤 Palmer Walter Mckinnon
- 👤 Larue Napoleon Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:49
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/06; D01D1/04; B; B29; B29C; B29C48/00; B29C48/03; B29C48/05; Y; Y10; Y10S; Y10S264/00; Y10S264/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
219 words
AN APPARATUS FOR THE PRODUCTION OF ARTIFICIAL FILAMENTARY PRODUCTS FROM POWDERED FUSIBLE FILAMENT-FORMING MATERIAL, COMPRISING A VESSEL ADAPTED TO RECEIVE THE POWDERED MATERIAL AND HAVING A MAIN CONTAINER PORTION AND A SHORT TERMINAL FEED TUBE OF REDUCED CROSS-SECTIONAL AREA, AN ELECTRICAL RESISTANCE PLATE CLOSING THE OUTER END OF THE FEED TUBE AND INSULATED THEREFROM AND PROVIDED WITH AT LEAST ONE SPINNING ORIFICE, A ROTATABLE FEED SCREW IN SAID VESSEL AND EXTENDING FROM SAID CONTAINER PORTION INTO SAID FEED TUBE AND TERMINATING WITHIN SAID FEED TUBE AT A DISTANCE FROM SAID PLATE FORM ONE-THIRD TO ABOUT TWOTHIRDS THE DIAMETER OF SAID FEED SCREW, SAID FEED SCREW FITTING CLOSELY IN SAID FEED TUBE WHEREBY THE FILAMENTFORMING MATERIAL IS POSITIVELY URGED INTO AND THROUGH SAID FEED TUBE UNDER THE PRESSURE EXERTED BY ROTATION OF SAID SCREW, BEARING MEANS FOR SAID SCREW ADAPTED TO RESIST POSITIVELY DISPLACEMENT FROM SAID PLATE IN AN AXIAL DIREACTION, MEANS FOR ROTATIG SAID SCREW TO URGE THE MATERIAL FROM THE CONTAINER PORTION THROUGH THE FEED TUBE AND AGAINST SAID PLATE, ELECTRICAL MEANS FOR PASSING AN ELECTRICAL CURRENT THROUGH IN THE PLATE THEREBY TO HEAT IT BY RESISTANCE TO A FUSION TEMPERATURE FOR SAID MATERIAL WHEREBY THE FILAMENT-FORMING MATERIAL ADJACENT SAID PLATE IS FUSED TO A MOLTEN CONDITION AND FORCED THROUGH THE ORIFICE IN SAID PLATE IN FILAMENT FORM.
Claim 2
Independent Claim
219 words
AN APPARATUS FOR THE PRODUCTION OF ARTIFICIAL FILAMENTARY PRODUCTS FROM POWDERED FUSIBLE FILAMENT-FORMING MATERIAL, COMPRISING A VESSEL ADAPTED TO RECEIVE THE POWDERED MATERIAL AND HAVING A MAIN CONTAINER PORTION AND A SHORT TERMINAL FEED TUBE OF REDUCED CROSS-SECTIONAL AREA, AN ELECTRICAL RESISTANCE PLATE CLOSING THE OUTER END OF THE FEED TUBE AND INSULATED THEREFROM AND PROVIDED WITH AT LEAST ONE SPINNING ORIFICE, A ROTATABLE FEED SCREW IN SAID VESSEL AND EXTENDING FROM SAID CONTAINER PORTION INTO SAID FEED TUBE AND TERMINATING WITHIN SAID FEED TUBE AT A DISTANCE FROM SAID PLATE FORM ONE-THIRD TO ABOUT TWOTHIRDS THE DIAMETER OF SAID FEED SCREW, SAID FEED SCREW FITTING CLOSELY IN SAID FEED TUBE WHEREBY THE FILAMENTFORMING MATERIAL IS POSITIVELY URGED INTO AND THROUGH SAID FEED TUBE UNDER THE PRESSURE EXERTED BY ROTATION OF SAID SCREW, BEARING MEANS FOR SAID SCREW ADAPTED TO RESIST POSITIVELY DISPLACEMENT FROM SAID PLATE IN AN AXIAL DIREACTION, MEANS FOR ROTATIG SAID SCREW TO URGE THE MATERIAL FROM THE CONTAINER PORTION THROUGH THE FEED TUBE AND AGAINST SAID PLATE, ELECTRICAL MEANS FOR PASSING AN ELECTRICAL CURRENT THROUGH IN THE PLATE THEREBY TO HEAT IT BY RESISTANCE TO A FUSION TEMPERATURE FOR SAID MATERIAL WHEREBY THE FILAMENT-FORMING MATERIAL ADJACENT SAID PLATE IS FUSED TO A MOLTEN CONDITION AND FORCED THROUGH THE ORIFICE IN SAID PLATE IN FILAMENT FORM.
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) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |