Patent ID: 7478600

Claim:
A railway car comprising: a railway car underframe having a floor assembly mounted thereon and attached thereto; the railway car underframe and the floor assembly having generally elongated, rectangular configurations; a pair of sidewall assemblies mounted on and attached to opposite sides of the railway car underframe; a pair of endwall assemblies mounted on and attached to opposite ends of the railway car underframe; a roof assembly attached to the sidewall assemblies and the endwall assemblies opposite from the floor assembly; each sidewall assembly formed from a plurality of metal sheets attached to and extending between a respective top chord and a respective side sill assembly; the metal sheets having respective exterior surfaces and interior surfaces; a plurality of support posts respectively attached to the interior surfaces of the metal sheets; respective layers of fiber reinforced material disposed on the support posts opposite from the metal sheets to form a respective interior surface for each sidewall assembly; insulating materials disposed between and bonded with respective interior surfaces of the metal sheets, portions of the support posts and the respective layers of fiber reinforced material; each sidewall assembly having an opening formed therein to provide access to the interior of the railway car; a respective door assembly slidably mounted on exterior portions of each sidewall assembly adjacent to the opening formed in each sidewall assembly; each door assembly having a first, closed position blocking the respective opening and a second, open portion allowing access to the interior of the railway car; a respective metal door frame assembly disposed adjacent to the perimeter of each opening; and pultruded strips of fiber reinforced material attached to portions of each metal door frame assembly to minimize heat transfer between the interior and the exterior of the railway car proximate the respective opening in each sidewall assembly when the respective door assembly is in its first, closed position.