US3583204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for hydrostatic extrusion
Assignee: ABB Norden Holding AB
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Filing: 1968-06-28
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Granted: 1971-06-08
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Expires: 1988-06-28
Abstract
Abstract A die for band extrusion having a calibrating part, a conical inlet channel and an intermediate chisel-shaped part.
Inventors
- 👤 Jan Nilsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:38
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/007; B21C25/00; B21C25/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
131 words
Die for hydrostatic extrusion intended for manufacturing a tape or bar the cross section of which has at least one part the length of which is greater than its breadth, the die having an inlet side and an outlet side, the inlet side of the die being directed into the pressure chamber, in which the die is shaped with a relatively short calibrating part seen in the direction of its horizontal axis, a chisel-shaped inlet channel lying on the side of the calibrating part remote from the outlet side the smallest cross section of which substantially coincides with the opening in said calibrating part and an adjacent right circular conical inlet, the innermost cross section of said chisel-shaped inlet channel substantially coinciding with the outermost cross section of said conical inlet.
Claim 2
Dependent Claim
131 words
Die for hydrostatic extrusion intended for manufacturing a tape or bar the cross section of which has at least one part the length of which is greater than its breadth, the die having an inlet side and an outlet side, the inlet side of the die being directed into the pressure chamber, in which the die is shaped with a relatively short calibrating part seen in the direction of its horizontal axis, a chisel-shaped inlet channel lying on the side of the calibrating part remote from the outlet side the smallest cross section of which substantially coincides with the opening in said calibrating part and an adjacent right circular conical inlet, the innermost cross section of said chisel-shaped inlet channel substantially coinciding with the outermost cross section of said conical inlet.
Claim 3
Dependent Claim
24 words
Means as claimed in claim 1, the apex angle of said chisel-shaped inlet channel being greater than the apex angle of said conical part.
References Cited (Backward Citations)
GB190724948A
Cited
GB375279A
Cited
US2146788A
Cited
US2408627A
Cited
US3364718A
Cited
US3440862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |