Rubber mixture for an elastic intermediate layer for a rail support

US5735457A · kind A · utility

Assignee

• Phoenix, LLC · DE

Inventors

• Edgar Bohm · Clausthal-Zellerfeld, DE
• Manfred Klerk · Hamburg, DE
• Karl-Heinz Krause · Chemnitz, DE
• Gerhard Merkmann · Gotha, DE
• Rolf Steinmuller · Gotha, DE
• Klaus Tübel · Gotha, DE

Key dates

• Filing date: Feb 26, 1996
• Grant date: Apr 7, 1998
• Expiry date: Feb 26, 2016

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F1/377
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A rubber mixture is particularly based on natural rubber (NR), epoxidized natural rubber (E-NR), isoprene rubber (IR), butadiene rubber (BR), acrylate rubber (ACM), styrene-butadiene rubber (SBR), or blends of these types of rubber, particularly NR/SBR- blends or NR-BR- blends, as well as the usual mixing ingredients such as fillers, plasticizers, anti-aging media, as well as additional additives, if needed. This mixture produces a plate-like, elastic intermediate layer with low dynamic stiffening; high dynamic stressability; high specific volume resistivity; and low frequency-dependence of the dynamic stiffening. The intermediate layer is arranged particularly between the base of the rail and the top side of the tie in connection with high-speed rail tracks. The underside of the intermediate layer is provided with at least one recess, with formation of an edge extending all around, and facing the top side of the tie. The top side of the intermediate layer which is the surface supporting the base of the rail, is substantially planar shaped.