Patent ID: 6425334
Filing Date: 2002-07-30
Classification: B61F

Abstract:
A friction shoe for use in a railway freight car truck, said friction shoe comprising a vertical rear wall extending for about the entire lateral width of the friction shoe,a sloped wall extending downwardly at an acute angle from a top position of lateral junction with a top position of said vertical rear wall, a bottom section extending from and generally perpendicular to a lower portion of said vertical rear wall to a lower portion of said sloped wall, side walls each extending from outer edges of said vertical real wall, said sloped wall and said bottom section, and two support walls extending from a generally laterally central intersection with an inner surface of said vertical rear wall to a generally laterally central intersection with an inner surface of said sloped wall and from said bottom section to said lateral junction between said sloped wall and said vertical rear wall, wherein each of said support walls has a generally circular shaped opening therein, wherein each of said circular shaped openings has a tapered cross section forming said opening in said support wall.