Pad for placing under a railway rail and a rail-and-fastening assembly including the pad
US4971247A · kind A · utility
15Cited by
16References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 19, 1988 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Oct 19, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B9/685
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pad has a base portion, which lies on a foundation and on which a flange of a railway rail lies, and upstanding side portions extending upwardly from opposite sides of the base portion and formed with a recess in which lies a part of a rail clip. The pad may have sideways-extending portions for projecting on opposite sides of a clip-retaining member and it may also have projecting islands, possibly chevron-shaped, on one face or on both faces. The base portion may be one member made of soft material and this may be fixed to a separate member made of harder material which is formed with the side portions and the recess.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.