Patent ID: 6092472
Filing Date: 2000-07-25
Classification: B61D,Y02T

Abstract:
A composite box structure for mounting on a railway car underframe to form an insulated railway boxcar comprising:a pair of opposite substantially rectangular side walls, each side wall having top and bottom edges and ends and having an opening intermediate the ends providing access to the box structure for loading and unloading cargo;a pair of opposite substantially rectangular end walls, each end wall having upper and lower edges and ends and extending between and joined to an end of each of the side walls at a side/end corner joint;a substantially rectangular floor having opposite side edges and ends, the floor extending between and joined to the bottom edges of the side walls and extending between and joined to the bottom edges of the end walls at floor/end corner joints;the side walls, the end walls, and the floor being formed as a first fiber reinforced composite unit having a plurality of core members which are each wrapped with a fiber material and sandwiched between at least two layers of fiber material; anda substantially rectangular roof formed as a second fiber reinforced composite unit having a plurality of core members which are each wrapped with a fiber material and sandwiched between at least two layers of fiber material and being mounted on the upper edges of the end walls and the side walls opposite from the floor.