Pad for a railway rail fastening assembly
US11248349B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2017 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Apr 4, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B9/688
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pad for a railway rail fastening assembly, the pad being configured for placement between a rail and an underlying foundation, such as slab track or a sleeper, wherein a cross-section of the pad comprises: a second resilient layer configured to face a railway rail; an intermediate rigid layer; and a first resilient layer configured to face an underlying foundation. The rigid layer is provided between and is integrally formed with the first and second resilient layers. An edge of the pad comprises at least one ear that extends beyond a central region of the pad, the rigid layer extending into the ear with the ear being configured to resist rail roll.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.