Foot support modification for railroad rails
US5628454A · kind A · utility
0Cited by
11References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1996 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Apr 3, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B9/38
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sole, ribbed or slide chair plate for a foot of a railroad rail provided with two spaced flat bearing surfaces between which is a concave surface allowing for non tipping of the rail when in place if the bottom of the rail has a convex surface and a shim fitting on top of the plate having a top surface composed of two spaced flat bearing surfaces between which is a concave surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.