Rail pads
US5261599A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 24, 1992 |
| Grant date | Nov 16, 1993 |
| Priority date | — |
| Expiry date | Mar 24, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B9/683
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pad, suitable for spacing the bottom of a railway rail from a rail foundation on which the rail stands, comprises a plate-like rail-supporting portion (1), made of cushioning material, having an upper main face supporting the rail and softer, resiliently-deformable, sealing portion (3) located at a peripheral region of the lower main face of the rail-supporting portion (1). When the pad is placed on a rail foundation and a rail is placed on the upper main face of the rail-supporting portion (1), the sealing portion (3) deforms under the weight of the rail so as to form a substantially watertight seal, between the rail foundation and the pad, around the periphery of the pad.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.