US2773593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of extruding high copper alloys
Assignee: Chase Brass and Copper Co Inc
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Filing: 1953-02-27
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Granted: 1956-12-11
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Expires: 1973-02-27
Abstract
No abstract record available.
Inventors
- 👤 William F Schmollinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:53
CPC Classifications
B; B21; B21C; B21C35/00; B21C35/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
THE METHOD OF EXTRUDING HIGH-COPPER ALLOY ROD OR TUBE AT RELATIVELY HIGH TEMPERATURES WHICH COMPRISES PROVIDING A HIGH-COPPER ALLOY BILLET WITH A COATING OF HIGHTEMPERATURE REFRACTORY MATERIAL ADAPTED TO INCREASE FRICTION BETWEEN THE SURFACE OF THE BILLET AND THE WALL OF THE EXTRUSION PRESS CONTAINER, AND EXTRUDING THE CORE OF THE COATED BILLET AT SUITABLY ELEVATED TEMPERATURE FROM SUCH CONTAINER THROUGH A DIE WHILE LEAVING SUBSTANTIALLY A FULL SLEEVE ON THE CONTAINER WALL.
Claim 2
Independent Claim
73 words
THE METHOD OF EXTRUDING HIGH-COPPER ALLOY ROD OR TUBE AT RELATIVELY HIGH TEMPERATURES WHICH COMPRISES PROVIDING A HIGH-COPPER ALLOY BILLET WITH A COATING OF HIGHTEMPERATURE REFRACTORY MATERIAL ADAPTED TO INCREASE FRICTION BETWEEN THE SURFACE OF THE BILLET AND THE WALL OF THE EXTRUSION PRESS CONTAINER, AND EXTRUDING THE CORE OF THE COATED BILLET AT SUITABLY ELEVATED TEMPERATURE FROM SUCH CONTAINER THROUGH A DIE WHILE LEAVING SUBSTANTIALLY A FULL SLEEVE ON THE CONTAINER WALL.
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) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |