US PATENT SUBCLASS 454 / 89
.~.~.~ Ice-bunker closure (e.g., for refrigerated railcar)

Current as of: June, 1999
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454 /   HD   VENTILATION

69  DF  VEHICLE (E.G., AUTOMOBILE, ETC.) {15}
83  DF  .~ Railcar, bus, or trailer {10}
88  DF  .~.~ Freight {3}
89.~.~.~ Ice-bunker closure (e.g., for refrigerated railcar)

DEFINITION

Classification: 454/89

Ice-bunker closure (e.g., for refrigerated railcar):

(under subclass 88) Subject matter comprising a selectively movable or removable cover for a hatch of an ice-carrying bin in the transporting device, which closing includes means for admitting air.

(1) Note. Ice is usually placed through the hatch and into the bin to cool a space in the transporting device.