Rail with friction control tread surface for inner rail, rail with friction control tread surface for outer rail, and permanent way

Abstract

This rail with a friction control tread surface for an inner rail includes an inner wheel contract surface that is provided so as to be curved along a line shape of a permanent, and is subjected to being in contact with an inner wheel of the rail car which rolls therealong. A plurality of grooves extending in a direction orthogonal to the line shape are formed on the inner wheel contract surface. This rail with a friction control tread surface for an outer rail includes an outer wheel contact surface that is provided so as to be curved along a line shape of a permanent way, and is subjected to being in contact with an outer wheel of the rail car which rolls therealong. A plurality of grooves extending in a direction of the line shape are formed on the outer wheel contract surface.

Dependencies are inferred from the claim text.