Machine for straightening and stress-relieving steel rails
US4726212A · kind A · utility
4Cited by
12References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1986 |
| Grant date | Feb 23, 1988 |
| Priority date | — |
| Expiry date | Mar 4, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D3/12
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hydraulic stretching machine for straightening and stress-relieving rails, the machine being defined by stretching grips and fixing shackles being displaceable individually and independently, laterally and vertically, with respect to the longitudinal axis of the stretching machine, and grip-holding jaws which can be oriented about a longitudinal axis, the jaws including a fixed jaw and a mobile jaw articulated in and upon the fixed jaw.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.