Patent ID: 9446774
Filing Date: 2016-09-20
CPC Classification: B61F

Claim Text:
1. A railway freight car truck comprising: two sideframes, each having a spring support base, bolster support springs on the sideframe spring support base, a bolster extending traverse to the two sideframes, the bolster having two end sections, each bolster end section extending into and being supported on one of the spring support bases by the support springs, each sideframe including a bolster opening formed by two sideframe vertical sidewalls, each bolster end section including two sloped surfaces each forming a bolster end pocket, a friction shoe having a sloped face and a vertical face, the sloped face of the friction shoe including a recess, a first low friction material pad of a shape complementary to and received in the recess in the sloped face of the friction shoe, and wherein the first low friction material pad is of a height that extends outward from the recess in the sloped face of the friction shoe, the friction shoe located in the bolster end pocket such that the first low friction material pad is located adjacent the bolster end sloped surface, and the friction shoe vertical face is located adjacent the sideframe vertical sidewall, wherein the friction shoe further comprises a wear plate having a bar extending therefrom, a second low friction material pad having an opening formed by two protrusions adjacent to receive the wear plate bar, and a reception opening in the friction shoe vertical face wherein the two protrusions from the second low friction material pad are received.