Patent ID: 7926672

Claim:
A yoke for a railway car coupling apparatus, comprising: a tail portion at one end of the yoke; two opposed sections extending from the tail portion and terminating in a head portion; the head portion comprising opposed top and bottom walls and opposed supporting walls between the top and bottom walls and substantially perpendicular to the top and bottom walls; wherein the top and bottom walls, or the opposed supporting walls, have an aperture to receive a post or key for engaging a railway car coupler; wherein the sections meet the tail portion at respective relief fillets, each relief fillet having a substantially identical compound radius of curvature, such that a first portion of the compound radius is farther from a centerline of the yoke and has a radius of about ½ inch to about 1 inch, tapering to a second portion of the compound radius, nearer to the centerline of the yoke, and having a radius of about ½ inch to about 2 inches, and wherein the second portion of the compound radius is larger than the first portion of the compound radius.