Polymer embedment of rails
US6270017A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1999 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Apr 14, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B21/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of making a polymer coated rail in which a rail to be coated (10) is positioned on a mould base (11) in an inverted manner, so that the head (12) of the rail is immediately adjacent the base plate (11). Then, mould side pieces (13, 14) are secured to the base plate (11) to run parallel to the side of the rail (10). Antislip material such as bauxite or granite chippings (21) are positioned in the mould so that they lie on the base plate (11), and then the liquid polymer is poured into the mould to fill the spaces (19, 20) and so encapsulate the rail (10). The polymer is poured into the mould, until its surface (22) covers the foot (23) of the rail. In this state, the polymer is allowed to cure, so that it solidifies, and once the side plates (13, 14) have been removed, the rail together with its polymer coating can be lifted from the base plate (11).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.