Patent ID: 7845287
Filing Date: 2010-12-07
Classification: B61F

Abstract:
1. A railway truck comprising: a frame; a first wheel-set operatively connected to the frame, the first wheel-set including: a second wheel-set operatively connected to the frame, the second wheel-set including: a first steering lever pivotally connected to the first end portion of the first axle about a first generally vertical pivot axis, the first steering lever being pivotally connected to the frame about a second generally vertical pivot axis, the first pivot axis being laterally offset from the second pivot axis; a second steering lever pivotally connected to the second end portion of the first axle about a third generally vertical pivot axis, the second steering lever being pivotally connected to the frame about a fourth generally vertical pivot axis, the third pivot axis being laterally offset from the fourth pivot axis; and a first steering rod having a first end pivotally connected to the first steering lever at a point disposed on the first steering lever and being laterally offset from the first and second pivot axes and a second end having a connection at a point laterally offset from a longitudinal centerline of the truck and on a same side of the longitudinal centerline as the first steering lever and operatively pivotally connected at said connection to a carbody when the truck supports the carbody; wherein a first generally horizontal line passing through the first and second pivot axes crosses a second generally horizontal line passing through the third and fourth pivot axes at less than a predetermined distance from a vertical centerline of the truck when the first and second axles are parallel, the vertical centerline passing through a geometric center of the first and second wheel-sets, the geometric center being a point that is equidistant from a center of each of the first, second, third, and fourth wheels when the first and second axles are parallel.