Railway crossing installation
US5740961A · kind A · utility
Inventor
Key dates
| Filing date | Mar 8, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Mar 8, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C9/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A railway crossing installation for a pair of spaced apart elongated rails each having in transverse section a bottom horizontal flange, a vertically extending bight and a top ball. A plurality of relatively elongated concrete panels are provided, with each panel having a top surface generally aligned with the ball upper surface, each panel having elongated sides disposed adjacent the rails and ends disposed in confronting relation to any adjacent panels. The panel side adjacent a rail has an integral elongated projection spaced below the panel top surface, with the projection extending toward the bight and having a vertical side spaced from the bight. A resilient, elongated extrusion extends along each panel side between the projection side and the rail bight, the extrusion having a body part compressively stressed between a ball lower surface and a projection side, the body part when unstressed overlying the projection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.