Extrusion press stem with at least one channel running approximately axially through it
US4223546A · kind A · utility
2Cited by
12References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1978 |
| Grant date | Sep 23, 1980 |
| Priority date | — |
| Expiry date | Jul 17, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21C26/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An extrusion press stem exhibits at least one channel which runs approximately parallel to the central axis and connects up with a shape giving die. Such a stem as used in the indirect extrusion of materials, in particular light metal billets, is made up of component parts which fit concentrically together and is held securely together by the joints at the end of each component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.