초록 ▼

A railway tie pad is provided with studs that are either offset from opposed positions from each other, on opposite sides of the pad; or are of differing heights. Pads with these features are capable of being more efficient in isolating ties and rails from shock loading, and in accommodating varying

A railway tie pad is provided with studs that are either offset from opposed positions from each other, on opposite sides of the pad; or are of differing heights. Pads with these features are capable of being more efficient in isolating ties and rails from shock loading, and in accommodating varying loads with differing cushioning characteristics.

대표청구항 ▼

A railway tie pad adapted to progressively absorb increasing degrees of loading comprising: (a) a central core of relatively planar proportions having first and second opposed sides and being composed of resilient, shear resisting material, and (b) a plurality of protruding studs composed of resilie

A railway tie pad adapted to progressively absorb increasing degrees of loading comprising: (a) a central core of relatively planar proportions having first and second opposed sides and being composed of resilient, shear resisting material, and (b) a plurality of protruding studs composed of resilient compression-resisting material, distributed over said first and second sides of said core, wherein said studs distributed across said first side of the pad comprise a first class of primary studs of a given height above the first side, interspersed with a second class of secondary studs of lesser height above the first side, and wherein the studs on the second side of the pad comprise offset studs which are offset from said primary studs and opposed by said secondary studs so that, upon progressive loading of the pad, bending and shear stress form in the core and the interspersed secondary studs of lesser height are progressively exposed to loading.