US3784660A
Expired / Lapsed
US
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Method of extruding material from a particulate mass using a rotating extrusion die
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1971-12-07
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Granted: 1974-01-08
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Expires: 1991-12-07
Abstract
Abstract AN EXTRUSION PROCESS IN WHICH HYDRAULIC PRESSURE IS EXERTED ABOUT A MASS OF PARTICULATE MATERIAL TO FORCE IT AGAINST A DIE MEMBER HAVING A MINOR FACE CARRYING THE EXTRUSION ORIFICE DISPOSED SO AS TO EXERT ADDITIONAL COMPRESSIVE STRESS AGAINST THE PARTICULATE MATERIAL TO FORCE IT THROUGH THE EXTURSION ORIFICE.
Inventors
- 👤 H Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:01
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/20; B21; B21C; B21C23/00; B21C23/007; B22F2003/206
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |