Patent US3177573A successfully refreshed from Google Patents.
US3177573A
Expired / Lapsed
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Method of die-expressing an aluminum-base alloy
Assignee: Dow Chemical Co
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Filing: 1961-02-24
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Granted: 1965-04-13
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Expires: 1981-02-24
Abstract
No abstract record available.
Inventors
- 👤 George S Foerster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:48
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/002; B22F9/008; C; C22; C22C; C22C21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
THE METHOD OF MAKING A HIGH STRENGTH DIE-EXPRESSED ALUMINUM BASE ALLOY ARTICLE WHICH COMPRISES, (A) PROVIDING A MOLTEN MIXTURE CONSISTING OF AT LEAST 70 PERCENT OF AN ALUMINUM BASE METAL AND A SECOND METAL SELECTED FROM THE GROUP CONSISTING OF GLD, BARIUM, RARE EARTH METALS, PALLADIUM, PLATINUM, ANTIMONY, SELENIUM, STRONTIUM, TELLURIUM, THORIUM, URANIUM AND MIXTURES THEREOF IN AN AMOUNT SUFFICIENT TO FORM WITH THE BASE METAL FROM ABOUT 0.5 TO ABOUT 20 VOLUME PERCENT OF THE CORRESPONDING ALUMINUM ILNTERMETALLIC COMPOUND IN THE ALLOY, (B) ATOMIZING THE MOLTEN MIXTURE SO AS TO CONVERT THE SAME INTO A MASS OF FINE INDIVIDUALLY FROZEN PARTICLES HAVING DISPERSED THERETHROUGH FINE CRYSTALLITES OF SAID INTERMETALLIC COMPOUND, (C) HEATING THE MASS OF AS-ATOMIZED ALLOY TO A TEMPERATURE WITHIN THE RANGE OF PLASTIC DEFORMATION OF THE ALLOY, (D) APPLYING PRESSURE UPON THE HEATED MASS SO AS TO COMPACT THE SAME, (E) RAM EXTRUDING THE RESULTING COMPACTED MASS AT A TEMPERATURE WITHIN THE AFORESAID RANGE, THE REDUCTION IN CROSS-SECTIONAL AREA OF THE COMPACTED MASS EFFECTED BY THE RAM EXTRUSION BEING AT LEAST ABOUT 80 PERCENT.
Claim 2
Independent Claim
177 words
THE METHOD OF MAKING A HIGH STRENGTH DIE-EXPRESSED ALUMINUM BASE ALLOY ARTICLE WHICH COMPRISES, (A) PROVIDING A MOLTEN MIXTURE CONSISTING OF AT LEAST 70 PERCENT OF AN ALUMINUM BASE METAL AND A SECOND METAL SELECTED FROM THE GROUP CONSISTING OF GLD, BARIUM, RARE EARTH METALS, PALLADIUM, PLATINUM, ANTIMONY, SELENIUM, STRONTIUM, TELLURIUM, THORIUM, URANIUM AND MIXTURES THEREOF IN AN AMOUNT SUFFICIENT TO FORM WITH THE BASE METAL FROM ABOUT 0.5 TO ABOUT 20 VOLUME PERCENT OF THE CORRESPONDING ALUMINUM ILNTERMETALLIC COMPOUND IN THE ALLOY, (B) ATOMIZING THE MOLTEN MIXTURE SO AS TO CONVERT THE SAME INTO A MASS OF FINE INDIVIDUALLY FROZEN PARTICLES HAVING DISPERSED THERETHROUGH FINE CRYSTALLITES OF SAID INTERMETALLIC COMPOUND, (C) HEATING THE MASS OF AS-ATOMIZED ALLOY TO A TEMPERATURE WITHIN THE RANGE OF PLASTIC DEFORMATION OF THE ALLOY, (D) APPLYING PRESSURE UPON THE HEATED MASS SO AS TO COMPACT THE SAME, (E) RAM EXTRUDING THE RESULTING COMPACTED MASS AT A TEMPERATURE WITHIN THE AFORESAID RANGE, THE REDUCTION IN CROSS-SECTIONAL AREA OF THE COMPACTED MASS EFFECTED BY THE RAM EXTRUSION BEING AT LEAST ABOUT 80 PERCENT.
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |