US3672440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for die casting ferrous metals
Assignee: Shibaura Machine Co Ltd
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Filing: 1969-06-13
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Granted: 1972-06-27
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Expires: 1989-06-13
Abstract
Abstract In a die casting machine for injection moulding metals of high melting points into a metal mold by means of an injection cylinder connected to the metal mold at one end and a plunger inserted into the injection cylinder from the opposite end, the injection cylinder comprises an outer cylindrical sleeve of high heat conductivity and is provided with a molten metal pouring opening near said opposite end and an inner cylindrical lining removably fitted in the outer sleeve, the inner lining including a plurality of sections of short axial length which are clamped together into the cylindrical lining, one of the sections positioned at the opposite end being provided with a molten metal pouring opening aligned with that of the outer sleeve.
Inventors
- 👤 Yasushi Miura
- 👤 Nobuo Kashiwagi
- 👤 Zenichi Mochizuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:21
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/20; B22D17/2015; B22D17/2023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
In a die casting machine for metals of high melting points comprising a metal mold, an injection cylinder connected to said metal mold at one end, and a plunger inserted into said injection cylinder through the opposite end thereof to inject under pressure molten metal into said mold, the improvement wherein said injection cylinder is inclined with respect to the horizontal such that said opposite end is maintained at a higher level than said one end of said injection cylinder, and said injection cylinder comprises an outer cylindrical sleeve of high heat conductivity and is provided with a molten metal pouring opening through said sleeve near said opposite end and an inner cylindrical lining removably fitted in said outer sleeve, said inner lining including a plurality of cylindrical sections of short axial length which are clamped together within said cylindrical inner lining, one of said sections positioned at said opposite end being provided with a molten metal pouring opening aligned with said pouring opening of said outer sleeve.
Claim 2
Dependent Claim
168 words
In a die casting machine for metals of high melting points comprising a metal mold, an injection cylinder connected to said metal mold at one end, and a plunger inserted into said injection cylinder through the opposite end thereof to inject under pressure molten metal into said mold, the improvement wherein said injection cylinder is inclined with respect to the horizontal such that said opposite end is maintained at a higher level than said one end of said injection cylinder, and said injection cylinder comprises an outer cylindrical sleeve of high heat conductivity and is provided with a molten metal pouring opening through said sleeve near said opposite end and an inner cylindrical lining removably fitted in said outer sleeve, said inner lining including a plurality of cylindrical sections of short axial length which are clamped together within said cylindrical inner lining, one of said sections positioned at said opposite end being provided with a molten metal pouring opening aligned with said pouring opening of said outer sleeve.
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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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |