Railroad hopper car unloader
OwnerWilliam R. Pearsoninventor
Life of this patent
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Abstract
A system unloads material, such as bulk quantities of dry product, from a container, such as a railroad hopper car, in a fast and efficient manner. The container defines an interior adapted to contain a product and includes a product discharge section adapted to allow the product to pass therethrough. The material unloading system includes a product outlet line adapted to communicate with the product discharge section. The product outlet line includes a product outlet adapted to allow the product to pass therethrough. A source of pressurized fluid communicates with the product outlet line and is adapted to move product from the product discharge section to the product outlet. A source of vacuum communicates with the product outlet and is adapted to unload the product from the product outlet.
Claims6
A combined container and material unloading system comprising:
- a container defining an interior and including an inlet and an outlet;
- a product outlet line that communicates with said interior of said container through said outlet;
- a source of pressurized fluid that communicates with said interior of said container through said inlet and with said product outlet line;
- a source of vacuum that communicates with said product outlet line;
- and
- a venturi valve assembly that provides communication between said source of vacuum and said product outlet line, said venturi valve assembly including a venturi pipe and a check valve that provides one-way communication from said venturi pipe to said product outlet line.
Dependencies are inferred from the claim text.