Abstract: An enclosed container for transporting a powdered material is aerated by a pressurized gas which is forced between a long sheet of flexible, gas-impervious material and a sloping surface of the container. The sheet material is held in place by a pair of clamps which accurately control the size of the space through which the gas flows so as to cause the sheet material to vibrate or flutter over a relatively long distance.

Abstract: The outlet valve of a container for fluids is suspended from such container by a spring-biased safety closure mechanism that is protected from damage and has an actuating mechanism that breaks away with the outlet valve on impact capable of causing the outlet valve to permit discharge of the contents of the container.

Abstract: A railroad tank car for use in handling dry bulk commodities. The car body structure includes a pair of V shaped hopper sections sloping downwardly from each end of the car. The hopper sections having side walls which increase in length as they extend towards the center of the car. A pair of asymmetric truncated cone sections are secured adjacent to the corresponding upper edges of the hopper sections. End sections are secured adjacent the outer edges of the hopper section and the cone section. First stiffener members are secured to the outer surfaces of the hopper section. Longitudinally extending second stiffener members are secured to the first stiffener members adjacent the intersection between the hopper sections and the cone sections. Tie members extend transversely across the hopper sections. A plurality of longitudinally extending aeration conveyor trays are supported from the hopper sections defining a plenum area therebelow.