Patent ID: 9168934
Filing Date: 2015-10-27
Classification: B61G

Abstract:
1. A knuckle comprising a throat portion, a knuckle tail, a knuckle pulling face, and a front face, said throat portion having a throat side wall with at least three sections, a throat side wall first section closest to the knuckle tail, a throat side wall third section closest to the knuckle pulling face, and a throat side wall second section between said first and third sections of the throat side wall and wherein the wall thickness of said throat side wall first section is less than 10% different than the wall thickness of said throat side wall second section, wherein the wall thicknesses throughout the first, second and third throat side wall sections varies by less than 17% to form a uniform transition from the throat side wall first section to the throat side wall third section along an internal surface for aiding in reducing turbulence in the flow of molten steel during formation of the knuckle and for aiding in reducing defects as the molten steel cools.