US3105269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radial extrusion die
Assignee: Union Carbide Corp
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Filing: 1960-12-02
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Granted: 1963-10-01
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Expires: 1980-12-02
Abstract
No abstract record available.
Inventors
- 👤 William A Senbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:02
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/03; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
IN COMBINATION WITH AN EXTRUDER HAVING A CYLINDRICAL CAVITY IN WHICH THERE IS ROTATABLY MOUNTED A CONVEYER WORM HAVING A CONICAL TIP, A RADIAL EXTRUSION DIE, CONCENTRICALLY MOUNTED OVER SAID CYLINDRICAL CAVITY, INTO WHICH THERMOPLASTIC MATERIAL IS RECEIVED FROM SAID EXTRUDER AND FROM WHICH SAID MATERIAL IS EXTRUDED, SAID RADIAL EXTRUSION DIE HAVING PASSAGEWAYS THROUGH WHICH SAID THERMOPLASTIC MATERIAL PASSES COMPRISING, IN SEQUENTIAL COMMUNICATION ONE WITH ANOTHER, A CONVERGING PASSAGEWAY, A CYLINDRICAL PASSAGEWAY, A DIVERGING PASSAGEWAY, AN ANNULAR PASSAGEWAY AND A RADIAL PASSAGEWAY, SAID RADIAL PASSAGEWAY FORMING AT ITS TIP THE DIE ORIFICE OF SAID RADIAL EXTRUSION DIE, THE CROSS SECTIONAL AREA PERPENDICULAR TO FLOW OF THERMOPLASTIC MATERIAL PASSING THROUGH SAID RADIAL EXTRUSION DIE AT ANY POINT OF SAID PASSAGEWAYS TO THE ENTRANCE OF SAID RADIAL PASSAGEWAY BEING SUBSTANTIALLY EQUAL AND BEING SUBSTANTIALLY EQUAL TO THE CROSS SECTIONAL AREA PERPENDICULAR TO FLOW AT ANY POINT IN THE CAVITY THEREOF.
Claim 2
Dependent Claim
149 words
IN COMBINATION WITH AN EXTRUDER HAVING A CYLINDRICAL CAVITY IN WHICH THERE IS ROTATABLY MOUNTED A CONVEYER WORM HAVING A CONICAL TIP, A RADIAL EXTRUSION DIE, CONCENTRICALLY MOUNTED OVER SAID CYLINDRICAL CAVITY, INTO WHICH THERMOPLASTIC MATERIAL IS RECEIVED FROM SAID EXTRUDER AND FROM WHICH SAID MATERIAL IS EXTRUDED, SAID RADIAL EXTRUSION DIE HAVING PASSAGEWAYS THROUGH WHICH SAID THERMOPLASTIC MATERIAL PASSES COMPRISING, IN SEQUENTIAL COMMUNICATION ONE WITH ANOTHER, A CONVERGING PASSAGEWAY, A CYLINDRICAL PASSAGEWAY, A DIVERGING PASSAGEWAY, AN ANNULAR PASSAGEWAY AND A RADIAL PASSAGEWAY, SAID RADIAL PASSAGEWAY FORMING AT ITS TIP THE DIE ORIFICE OF SAID RADIAL EXTRUSION DIE, THE CROSS SECTIONAL AREA PERPENDICULAR TO FLOW OF THERMOPLASTIC MATERIAL PASSING THROUGH SAID RADIAL EXTRUSION DIE AT ANY POINT OF SAID PASSAGEWAYS TO THE ENTRANCE OF SAID RADIAL PASSAGEWAY BEING SUBSTANTIALLY EQUAL AND BEING SUBSTANTIALLY EQUAL TO THE CROSS SECTIONAL AREA PERPENDICULAR TO FLOW AT ANY POINT IN THE CAVITY THEREOF.
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) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |