Forming of materials by extrusion
US4106320A · kind A · utility
2Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 1976 |
| Grant date | Aug 15, 1978 |
| Priority date | — |
| Expiry date | May 11, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21C23/005
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In the extrusion of a material, which can be a metal feedstock, through a die means by maintaining frictional engagement of the material with passageway defining surfaces of a member which is moved towards the die means such that frictional drag of the passageway defining surfaces urges the material through the die means, the improvement of enhancing the resultant available extrusion force by either increasing said frictional drag or reducing the frictional resistance to movement of said material relative to non-moving parts of said passageway, or a combination of both.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.