Patent ID: 11414107

Abstract:
A damper wedge for a railroad car truck includes a friction member that rides on the wear plate of the side frame column of the railroad car truck and a non-metallic wear surface; and a spring seat that, in use, engages a spring of the railroad car truck. The inclined damper wedge surface has a primary angle alpha, and a secondary angle beta. The spring seat has an axial centerline. The inclined damper wedge surface has a curvature. The curvature has a working point. The damper wedge has a datum plane that is normal to the non-metallic wear surface and that contains the axial centerline. The axial centerline meets the inclined damper wedge surface at an intersection point that is the center of a contact patch. The working point is located in a central region of the contact patch, or working surface patch, downslope of the intersection point.