Under sleeper pad

Abstract

An under sleeper pad (1) for securing to an outer surface (3) facing a ballast bed (2), in particular an underside (4), of a concrete railroad tie (5). The under sleeper pad (1) has an elastic layer (6) and a connecting layer (7) for connecting the under sleeper pad (1) to the railroad tie (5). The connecting layer (7) has a plurality of elevations (8) for embedding in the concrete of the railroad tie (1), and, in a plan view of the under sleeper pad (1), at least some, preferably all, of the elevations (8) have the shape of a diamond, and the diamond has a greater longitudinal extent (14) than transverse extent (13).

Dependencies are inferred from the claim text.