Patent ID: 7536957

Claim:
A flow through railroad freight car comprising: a containment shell carried by railroad car trucks for travel along railroad tracks; said containment shell defining an enclosed chamber; at least one outflow mounted to a lower region of said containment shell; at least one inflow mounted to an upper region of said containment shell; said inflow including a coaming; said coaming standing proud of said containment shell a first distance; said coaming including a depending skirt terminating at a lip; said depending skirt extending inwardly of said containment shell into said chamber a second distance to said lip; said skirt permitting lading introduced through said inflow to flow therepast into said containment shell; said skirt inhibiting filling of said containment shell upwardly of said lip; and said second distance being at least one half as great as said first distance; and said skirt is at least one of (a) of variable length; and (b) removable.