Patent ID: 9180893
Filing Date: 2015-11-10
Classification: B61D

Abstract:
1. A railway tank car comprising: (a) a cargo tank for containing fluid cargo and having tank wall of an elongate, generally cylindrical configuration including a vertical longitudinal central plane, a pair of opposite ends, and a tank top, the tank wall having an exterior surface and an interior surface; (b) a first opening defined through the tank wall at the tank top of the cargo tank; (c) a flange attachment skirt located within the first opening and extending through and around the first opening and upward above the tank top to a planar upper margin, the flange attachment skirt having an interior surface adjacent its planar upper margin; (d) an annular valve group mounting flange having a planar upper surface and a bottom surface spaced apart from the upper surface by a flange thickness, the mounting flange extending radially inward within the flange attachment skirt and having an upper margin fastened to the interior surface of the flange attachment skirt adjacent the planar upper margin thereof, having an outer margin of its bottom surface attached to the interior surface of the flange attachment skirt, and having at least a portion of its bottom surface located no higher than the interior surface of the tank wall located at the tank top; (e) a valve group and fittings mounting plate; (f) a plurality of mechanical fasteners attaching the mounting plate to the planar upper surface of the flange; and (g) a protective structure attached to the tank top and surrounding the first opening and the valve group mounting flange.