Patent ID: 7966946

Claim:
A railway car truck comprising a bolster having laterally opposite ends; two side frames transverse to the bolster and supporting the opposite ends of the bolster, each side frame having a wide pedestal formed on longitudinally opposite ends thereof, each pedestal having an upper jaw and a lower jaw surrounding a pedestal opening, the upper jaw having a roof section above the pedestal opening, the lower jaw having an inner wall and an outer wall on opposite sides of the pedestal opening, the inner and outer walls being spaced apart from one another to define a wide pedestal opening; a bearing adapter received in each pedestal opening, each bearing adapter comprising a concave opening to receive a bearing and a generally rectangular center section having a top surface generally opposite the concave opening, the bearing adapter comprising edge supports extending from the top surface, the edge supports defining an upper jaw pocket therebetween, the upper jaw pocket receiving the upper jaw, the bearing adapter comprising adapter shoulders at opposite ends of the bearing adapter, the shoulders defining lower jaw pockets at the opposite ends, the lower jaw pocket receiving the lower jaw, the bearing adapter having steps extending outward from sides thereof, the steps having outer surfaces separated by a distance corresponding to the width of the pedestal opening; and an elastomeric adapter pad mounted on top of the bearing adapter, the adapter pad comprising a generally flat, generally rectangular top section and depending legs that extend along the outer surfaces steps, the top section defining a pad for engaging the roof section, the depending legs defining pads for engaging the inner and outer walls, wherein the sides of the bearing adapter each include an inner step extending downward from the top surface of the bearing adapter and a transition extending outward from the inner step to an outer step, the outer step having a substantially vertical face extending downward from the transition, the outer step defining the outer surface of the bearing adapter.