Straightened rail
US4755238A · kind A · utility
2Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1986 |
| Grant date | Jul 5, 1988 |
| Priority date | — |
| Expiry date | Mar 5, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D3/12
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The steel rail is submitted to a tensile stress exceeding the conventional 0.2% offset yield strength of the steel, up to a stress value corresponding to a total plastic deformation of the whole rail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.