Patent ID: 9278700
Filing Date: 2016-03-08
CPC Classification: B61F

Claim Text:
1. An auxiliary centering member for a railroad freight car truck, the freight car truck having a sideframe and a wheelset to which the sideframe is mounted, the sideframe having a pedestal, the pedestal having a first rocker surface; the wheelset having a bearing, and a bearing adapter being mounted on the bearing, the bearing adapter having a second rocker surface in rolling contact engagement with the first rocker surface, wherein: said auxiliary centering member is shaped to seat between the bearing adapter and the sideframe pedestal; said auxiliary centering member is resilient; said auxiliary centering member is positioned, when installed, to urge the bearing adapter second rocker surface to a centered position relative to the sideframe pedestal first rocker surface; and as installed, said auxiliary centering member seats clear of the first and second rocker surfaces whereby rolling contact engagement of the first and second surfaces is unimpeded by said auxiliary centering member.