B - Operations – Transporting – 61 – D
Patent
B - Operations, Transporting
61
D
B61D 7/02 (2006.01) B61D 17/04 (2006.01) F17C 1/02 (2006.01)
Patent
CA 2610604
An hollow railroad car may be a have a lading containment structure that is a pressure vessel. The car may be a covered hopper car having one or more hopper discharge sections. Each hopper discharge section may include a transition from a substantially rectangular upper inlet to a substantially circular outlet. The transition may include developed plate formed as partial conic sections fitted as valleys between respective pairs of fore-and-aft slope sheets and side slope sheets. The car may have substantially planar internal ring reinforcement assemblies that serve to form a jig and a welding surface for the fore-and-aft slope sheet, a self-jig for the skins of the side wall and roof sheets, and which define buckling nodes for longitudinal compression of the car. The rings form local T--sections in combination with the adjacent wall skins, and do not employ out-of-plane formed sections such as hat sections. The reinforcement may be fabricated from flat sheet or flat bar.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
National Steel Car Limited
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