Rubber laminate and composites including the laminate
US7556209B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jun 16, 2006 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Dec 23, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B19/003
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rubber or elastomer laminate comprising a plurality of layers that can be vulcanized or crosslinked, wherein at least one of the layers includes a blowing agent. During vulcanization the layer containing the blowing agent expands to form a closed cell foam rubber layer. In a preferred embodiment, the closed cell foam rubber is interposed between two layers free or substantially free of a blowing agent. Composites, including the laminate, and preferably a metal article, most preferably a rail for use in an electric transit system, are formed by bonding the laminate to the metal article using a suitable bonding agent such as a rubber to metal adhesive. In a preferred embodiment, the unvulcanized laminate is applied or connected to the metal article prior to vulcanization. Rubber clad rail assemblies having a closed cell rubber foam layer and methods for preparing the same are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.