Patent ID: 9580087
Date: 2017-02-28
CPC Classifications: B61F,Y10T

Claim:
1. Method for forming a railcar truck comprising: providing a three-piece truck comprising: providing a first wheelset engaged with a first roller bearing and engaged with a second roller bearing; providing a second wheelset engaged with a third roller bearing and engaged with a fourth roller bearing; providing a first roller bearing adapter having AAR standard thrust lug clearances engaged with the first roller bearing, a second roller bearing adapter having AAR standard thrust lug clearances engaged with the second roller bearing, a third roller bearing adapter having AAR standard thrust lug clearances engaged with the third roller bearing, and a fourth roller bearing adapter having AAR standard thrust lug clearances engaged with the fourth roller bearing each roller bearing, each roller bearing adapter symmetrical about a lateral centerline and symmetrical about a longitudinal centerline, and defining a bottom surface and a crowned top surface, the top surface defining opposing first and second vertical shoulders that project upwardly from the top surface on either side of the side frame; providing a first adapter pad, a second adapter pad, a third adapter pad, a fourth adapter pad, each adapter pad comprising: engaging the first adapter pad with the first pedestal roof and the first roller bearing adapter such that movement of the top plate of the first adapter pad relative to the pedestal roof is restricted and that movement between the bottom plate of the first adapter pad relative to the first roller bearing adapter is restricted; engaging the second adapter pad with the second pedestal roof and the second roller bearing adapter such that movement of the top plate of the second adapter pad relative to the pedestal roof is restricted and that movement between the bottom plate of the second adapter pad relative to the second roller bearing adapter is restricted; engaging the third adapter pad with the third pedestal roof and the third roller bearing adapter such that movement of the top plate of the third adapter pad relative to the pedestal roof is restricted and that movement between the bottom plate of the third adapter pad relative to the third roller bearing adapter is restricted; engaging the fourth adapter pad with the fourth pedestal roof and the fourth roller bearing adapter such that movement of the top plate of the fourth adapter pad relative to the pedestal roof is restricted and that movement between the bottom plate of the fourth adapter pad relative to the fourth roller bearing adapter is restricted; wherein the top plate and bottom plate central portions and the central elastomeric member of each adapter pad are disposed at least in part beneath the engaged pedestal roof, and the first and second laterally projecting flanges of the top plate and the bottom plate and the first and second outer elastomeric members of each adapter pad are entirely disposed above the vertical shoulders of the engaged roller bearing adapter and outside of the engaged pedestal roof.