Patent ID: 8418627
Filing Date: 2013-04-16
Classification: B60B,B61F

Abstract:
1. Two-axle trucks for a railway car comprising: a first truck including a first wheel set having wheels with a first tread gradient at first tread portions, and a second wheel set having wheels with a second tread gradient at second tread portions corresponding to locations of the first tread portions on the first wheel set, wherein the second tread gradient is different from the first tread gradient, and the first or second tread gradient which is smaller than the other is in the range of 0.03-0.06, and wherein the wheel set of the first and second wheel sets having wheels with a larger tread gradient than the other at the corresponding locations is disposed to the rear in a direction of travel; and a second truck arranged in operative connection with the first truck, and including wheels with different gradients as comparing to corresponding wheels of the first truck at the corresponding locations.