B - Operations – Transporting – 61 – D
Patent
B - Operations, Transporting
61
D
105/172
B61D 5/00 (2006.01)
Patent
CA 1208981
Abstract of the Disclosure The tank of a railway tank car has two top-mounted lading conduits coupled thereto in fluid communication therewith. One of the lading conduits has the inner end thereof disposed at the minimum fill level of the tank. A vapor vent fitting is also formed in the tank, to which any one of a plurality of different-length vent pipes can selectively removably be mounted with the inner ends thereof disposed at different levels be- tween the maximum and minimum fill levels of the tank. The vent pipe communicates with the one lading conduit above the maximum fill level of the tank. An access opening is provided so that the vent pipe can be reached and changed from outside the tank. In one embodiment the vent pipe communicates with the one lading conduit inside the tank and access there- to is had through the one lading conduit. In another embodiment the vent pipe communicates with the one lad- ing conduit inside the tank, but access thereto is had through a separate access opening in the tank. In third embodiment the vent pipe communicates with the one lading conduit outside the tank. A special tool is provided for facilitating mounting and demounting of the interchangeable vent pipes from outside the tank.
457054
Davis Edward L.
Mowatt-Larssen Erling
General American Transportation Corporation
Osler Hoskin & Harcourt Llp
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