Plunger for a diecasting machine
US5048592A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1990 |
| Grant date | Sep 17, 1991 |
| Priority date | — |
| Expiry date | Feb 9, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D17/203
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A plunger for forcing molten aluminum or brass out of a casting cylinder of a diecasting machine includes a cap which is screwed via an internal thread onto an external thread of a supporting body and is made of a material, in particular a copper alloy, which has a greater coefficient of thermal expansion than the material of the cylinder, in particular steel, and the material of the supporting body, in particular steel. An inner cover face of the cap bears against a front face of the supporting body and, with its internal thread, is screwed thermally onto the external thread of the supporting body, and in addition, is preferably shrunk on thermally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.