Hydraulic safety device for a mechanism for closing up the rolls of a rolling mill
US4577484A · kind A · utility
0Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1984 |
| Grant date | Mar 25, 1986 |
| Priority date | — |
| Expiry date | Jul 12, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B31/32
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Hydraulic safety device for the mechanism for closing up the rolls of a rolling mill, comprising an hydraulic safety valve (20) which is accommodated directly inside the jack (1) for closing up the mill rolls and which automatically reduces the pressure of the fluid in the control chamber (12) as soon as the stroke of the body (11) of the jack reaches a predetermined limiting position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.