Fastening rail in railway slide chair assembly
US7874527B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 10, 2005 |
| Grant date | Jan 25, 2011 |
| Priority date | — |
| Expiry date | Mar 30, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B9/58
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rail fastening apparatus fastens an inner stock rail in a railway slide chair assembly. The apparatus includes a base plate. The base plate has on one face a rail seat region on which the inner stock rail sits when the slide chair assembly is in use. A resilient rail fastening clip restrains the inner stock rail. A locating means locates the rail fastening clip in a first position. A loading means vertically deflects the clip so as to produce a load in a toe portion of the clip. A second locating means holds the rail fastening clip in a second position different from the first position such that the toe portion of the clip sits on a ramp of the loading means in a preload condition in which the clip does not bear on the rail
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.