Patent ID: 7775163

Claim:
An elastomeric pad for seating between a bearing adapter and a pedestal seat roof of a railroad car truck, the bearing adapter having arches for seating on a casing of a bearing of an axle of a wheelset, and first and second ends having respective pairs of corner abutments for seating in opposition to pedestal seat jaw thrust lugs, and a pair of first and second crown members formed on an upper surface thereof, the crown members sharing a common axis of curvature, the axis of curvature being perpendicular to the axle, wherein said elastomeric pad comprises a main portion for overlying said crown members and a first end portion, the first end portion including a depending member formed to seat between the corner abutments of the bearing adapter, the main portion having a face for engagement with the upper surface of the bearing adapter, said face being formed on a 60 inch radius of curvature to match said crown members; and said elastomeric pad has the form of a “Pennsy” pad that has been hollowed out on the underside to conform to the crowned members of the bearing adapter.