초록 ▼

A fiberglass railcar roof that includes a fiberglass surface with a central portion and plural elongate fiberglass ribs extending transverse to the longitudinal axis of the fiberglass surface. In a first embodiment, the central portion has a cross-sectional configuration that defines a first arc, an

A fiberglass railcar roof that includes a fiberglass surface with a central portion and plural elongate fiberglass ribs extending transverse to the longitudinal axis of the fiberglass surface. In a first embodiment, the central portion has a cross-sectional configuration that defines a first arc, and the ribs each have broad widths and each extend above the central portion to define a second arc that intersects the first arc. In a second embodiment, the ribs have arcuate cross-sections and extend downward from the lower face of the central portion. Also disclosed are embodiments of the previously described roofs that are configured for use on refrigerated and cryogenic railcars.

대표청구항 ▼

[ It is claimed and desired to secure by letters patent:] [20.] A cryogenic railcar, comprising:a body; anda roof mounted on the body, wherein the roof includes:a bunker for supporting cryogenic snow, wherein the bunker has a lower surface and opposed walls that define a recess within the bunker;a c

[ It is claimed and desired to secure by letters patent:] [20.] A cryogenic railcar, comprising:a body; anda roof mounted on the body, wherein the roof includes:a bunker for supporting cryogenic snow, wherein the bunker has a lower surface and opposed walls that define a recess within the bunker;a composite fiberglass surface mounted to the side walls to enclose the recess;an insulating layer disposed between the fiberglass surface and the bunker;a manifold for delivering cryogenic material to the bunker wherein the manifold includes a supply tube disposed below the lower surface of the bunker and a plurality of nozzles extending from the supply tube through the lower surface of the bunker and into the recess for forming cryogenic snow from cryogenic material and for distributing the cryogenic snow within the recess; anda plurality of spaced ports that extend through the lower surface of the bunker.