Portal press
US3931728A · kind A · utility
5Cited by
9References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 14, 1974 |
| Grant date | Jan 13, 1976 |
| Priority date | — |
| Expiry date | Feb 14, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB30B15/042
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In a hydraulic press for heavy workpieces the frame of which comprises two yokes spaced by columns, the yokes are movable towards and from each other by the hydraulic working cylinders of the press. At least one of the yokes carries tools displaceable along the yoke. The arrangement makes it possible for the tools to work on every portion of a workpiece filling out the entire space between the columns, yet the cylinders are fixed relatively to the yoke carrying them which eliminates the need for flexible connections for the hydraulic medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.