Rail pads and rail assemblies including such pads
US4771944A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1987 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Feb 19, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B9/686
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention provides an elastomeric rail pad of generally rectangular plan configuration, the pad having an upper face adapted to underly the lower face of a rail, and a lower face adapted to overly a rail foundation member, wherein each of the upper and the lower faces of the pad is provided with a multiplicity of distinct and separate portions, when separately viewed from adjacent side edges of the rectangular pad, raised above the base level of the respective face and adapted to engage the rail or the foundation member respectively, the arrangement being such that between approximately 30% and 70% of that part of each face of the pad which is arranged to lie directly between the rail and the foundation member is constituted by the raised surface portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.