US3115249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion system
Assignee: Reynolds Metals Co
•
Filing: 1958-07-07
•
Granted: 1963-12-24
•
Expires: 1978-07-07
Abstract
No abstract record available.
Inventors
- 👤 Zouraeff Peter
- 👤 Andrew G Forrest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:36
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/32; B21C25/00; B21C25/02; C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/04; C10M2201/05; C10M2201/10; C10M2201/102; C10M2201/103; C10M2201/14; C10N; C10N2040/00; C10N2040/20; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
THE METHOD OF EXTRUDING HIGH TEMPERATURE METALS SELECTED FROM THE GROUP CONSISTING OF PLAIN CARBON, ALLOY AND STAINLESS STEELS, TITANIUM AND TITANIUM ALLOYS, SUBSTANTIALLY DIRECTING TO FINAL DIMENSIONS WITH THE SURFACE THEREOF CHARACTERIZED BY THE ABSENCE OF BLEMISHES AND HAVING AN AVERAGE SURFACE ROUGHNESS AS LOW AS 10 MICROINCHES, WHICH COMPRISES THE STEPS OF PREHEATING A BILLET OF THE AFORESAID METAL TO A TEMPERATURE IN THE RANGE OF 1300*F. TO ABOUT 2400*F., PLACING SAID BILLET NEXT TO AN EXTRUSION DIE HAVING A SLOPED, CONTOURED INNER FACE AND PROVIDED WITH AN
Claim 2
Independent Claim
90 words
THE METHOD OF EXTRUDING HIGH TEMPERATURE METALS SELECTED FROM THE GROUP CONSISTING OF PLAIN CARBON, ALLOY AND STAINLESS STEELS, TITANIUM AND TITANIUM ALLOYS, SUBSTANTIALLY DIRECTING TO FINAL DIMENSIONS WITH THE SURFACE THEREOF CHARACTERIZED BY THE ABSENCE OF BLEMISHES AND HAVING AN AVERAGE SURFACE ROUGHNESS AS LOW AS 10 MICROINCHES, WHICH COMPRISES THE STEPS OF PREHEATING A BILLET OF THE AFORESAID METAL TO A TEMPERATURE IN THE RANGE OF 1300*F. TO ABOUT 2400*F., PLACING SAID BILLET NEXT TO AN EXTRUSION DIE HAVING A SLOPED, CONTOURED INNER FACE AND PROVIDED WITH AN
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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) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |