Patent US3072251A successfully refreshed from Google Patents.
US3072251A
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Process and device for extrusion
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1960-01-25
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Granted: 1963-01-08
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Expires: 1980-01-25
Abstract
No abstract record available.
Inventors
- 👤 Sauve Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:03
CPC Classifications
B; B21; B21C; B21C26/00; B21C23/00; B21C23/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
AN EXTRUSION PROCESS IN WHICH A BILLET OF THE MATERIAL TO BE EXTRUDED AND A LUBRICANT ARE PLACED IN A CONTAINER PROVIDED WITH A DIE, AND PRESSURE IS APPLIED TO THE BILLET TO CAUSE IT TO BE PLASTICALLY DEFORMED AND THE MATERIAL THEREOF TO PASS THROUGH THE DIE, CHARACTERISED IN THAT THE APERTURE IN THE CONTAINER THROUGH WHICH THE EXTRUDED MATERIAL IS INTENDED TO EMERGE IS CLOSED BEFORE PRESSURE IS APPLIED, WITH A CLOSURE MEMBER, THE LUBRICANT BEING PLACED BETWEEN THE BILLET AND THE CLOSURE MEMBER, THE CLOSURE MEMBER HAVING A RESISTANCE TO BREAKAGE, AT THE EXTRUSION TEMPERATURE, WHICH IS
Claim 2
Dependent Claim
100 words
AN EXTRUSION PROCESS IN WHICH A BILLET OF THE MATERIAL TO BE EXTRUDED AND A LUBRICANT ARE PLACED IN A CONTAINER PROVIDED WITH A DIE, AND PRESSURE IS APPLIED TO THE BILLET TO CAUSE IT TO BE PLASTICALLY DEFORMED AND THE MATERIAL THEREOF TO PASS THROUGH THE DIE, CHARACTERISED IN THAT THE APERTURE IN THE CONTAINER THROUGH WHICH THE EXTRUDED MATERIAL IS INTENDED TO EMERGE IS CLOSED BEFORE PRESSURE IS APPLIED, WITH A CLOSURE MEMBER, THE LUBRICANT BEING PLACED BETWEEN THE BILLET AND THE CLOSURE MEMBER, THE CLOSURE MEMBER HAVING A RESISTANCE TO BREAKAGE, AT THE EXTRUSION TEMPERATURE, WHICH IS
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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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |