Patent US2743812A successfully refreshed from Google Patents.
US2743812A
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Arrangement to be used for extrusion of metals
Assignee: ABB Norden Holding AB
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Filing: 1952-10-23
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Granted: 1956-05-01
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Expires: 1972-10-23
Abstract
No abstract record available.
Inventors
- 👤 Ture A Ljungberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:19
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/22; B21C23/24; B21C23/26; B21C23/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
AN EXTRUSION PRESS FOR THE PRODUCTION OF METAL RODS, TUBES, CORE COVERINGS AND LIKE ARTICLES, COMPRISING A ROTARY EXTRUSION SCREW THREAD EXTERNALLY TAPERED IN THE DIRECTION OF MOVEMENT OF THE EXTRUSION METAL, A STATIONARY, TUBULAR CASING A ENCLOSING THE SCREW THREAD AND INTERNALLY TAPERED IN THE SAME DIRECTION, AND A CORE FOR THE SCREW THREAD SO TAPERED THAT THE CROSS-SECTIONAL CAPACITY OF THE SPACE ENCLOSED BY SAID CORE AND BY ADJACENT PARTS OF THE SCREW THREAD AND BY THE INTERNAL SURFACE OF THE CASING INCREASES PROGRESSIVELY IN THE DIRECTION OF MOVEMENT OF THE METAL IN THE PRESS.
Claim 2
Dependent Claim
97 words
AN EXTRUSION PRESS FOR THE PRODUCTION OF METAL RODS, TUBES, CORE COVERINGS AND LIKE ARTICLES, COMPRISING A ROTARY EXTRUSION SCREW THREAD EXTERNALLY TAPERED IN THE DIRECTION OF MOVEMENT OF THE EXTRUSION METAL, A STATIONARY, TUBULAR CASING A ENCLOSING THE SCREW THREAD AND INTERNALLY TAPERED IN THE SAME DIRECTION, AND A CORE FOR THE SCREW THREAD SO TAPERED THAT THE CROSS-SECTIONAL CAPACITY OF THE SPACE ENCLOSED BY SAID CORE AND BY ADJACENT PARTS OF THE SCREW THREAD AND BY THE INTERNAL SURFACE OF THE CASING INCREASES PROGRESSIVELY IN THE DIRECTION OF MOVEMENT OF THE METAL IN THE PRESS.
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) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |