Patent ID: 8499819
Filing Date: 2013-08-06
Classification: B22C

Abstract:
1. A core assembly that defines interior features of a knuckle of a railcar coupler, said core assembly comprising: a first core that defines interior features of a front face side of said knuckle, wherein said first core includes a lug, and further defines a first substantially planar positive stop surface that extends around said lug, wherein said first core includes a first radius that extends from the first positive stop surface to an outboard vertical portion of the first core; a second core that defines interior features of pinhole and tail sections of said knuckle, wherein said second core defines a slot with an interior that substantially complements said lug of the first core, wherein the second core further defines a second substantially planar positive stop surface that extends around said slot, wherein said second core includes a second radius that extends from a vertical wall of the second core to the second positive stop surface; wherein the lug is substantially disposed within the slot when said first and second cores are assembled, wherein said first and second positive stop surfaces are configured to contact one another, wherein when fully assembled, for substantially an entire peripheral region around an abutment at which the first positive stop surface meets said second positive stop surface, a smooth and substantially continuous section is formed.