US3205692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing hollow extruded products
Assignee: Reynolds Metals Co
•
Filing: 1963-11-06
•
Granted: 1965-09-14
•
Expires: 1983-11-06
Abstract
No abstract record available.
Inventors
- 👤 Auvo I Kemppinen
- 👤 Jr Grover C Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:40
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C23/00; B21C23/02; B21C23/04; B21C23/08; B21C23/085; B21C23/10; B21C33/00; B21C33/004; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE METHOD OF MAKING A HOLLOW EXTRUSION FROM AN EXTRUDABLE BILLET COMPRISING A FORMABLE METAL BLANK HAVING A CAVITY THEREIN, SAID BILLET BEING PROVIDED WITH AN OPENING IN AT LEAST ONE END THEREOF WHICH COMMUNICATE WITH SAID CAVITY AND THE CAVITY CONTAINING FILLER MATERIAL CHARACTERIZED BY HAVING A LOWER MELTING TEMPERATURE THAN THE METAL OF SAID BLANK, WHICH METHOD COMPRISES: PLACING THE BILLET IN AN EXTRUSION PRESS WITH THE OPENING TO SAID CAVITY FACING TOWARD THE EXTRUSION DIE; EXTRUDING SAID BILLET THROUGH THE DIE AT AN EXTRUSION RATE SUFFICIENT TO CAUSE THE HEATING OF SAID FILLER MATERIAL TO A TEMPERATURE WHICH AT LEAST APPROACHES ITS MELTING TEMPERATURE; AND DECELERATING THE EMERGING EXTRUSION SO AS TO EJECT FILLER MATERIAL AT THE EXTRUDED END OF THE BILLET.
Claim 2
Independent Claim
125 words
THE METHOD OF MAKING A HOLLOW EXTRUSION FROM AN EXTRUDABLE BILLET COMPRISING A FORMABLE METAL BLANK HAVING A CAVITY THEREIN, SAID BILLET BEING PROVIDED WITH AN OPENING IN AT LEAST ONE END THEREOF WHICH COMMUNICATE WITH SAID CAVITY AND THE CAVITY CONTAINING FILLER MATERIAL CHARACTERIZED BY HAVING A LOWER MELTING TEMPERATURE THAN THE METAL OF SAID BLANK, WHICH METHOD COMPRISES: PLACING THE BILLET IN AN EXTRUSION PRESS WITH THE OPENING TO SAID CAVITY FACING TOWARD THE EXTRUSION DIE; EXTRUDING SAID BILLET THROUGH THE DIE AT AN EXTRUSION RATE SUFFICIENT TO CAUSE THE HEATING OF SAID FILLER MATERIAL TO A TEMPERATURE WHICH AT LEAST APPROACHES ITS MELTING TEMPERATURE; AND DECELERATING THE EMERGING EXTRUSION SO AS TO EJECT FILLER MATERIAL AT THE EXTRUDED END OF THE BILLET.
References Cited (Backward Citations)
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GB763141A
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US2941281A
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US2891307A
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US9300353B1
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |