Abrading – Machine – Sandblast
Reexamination Certificate
2005-05-24
2005-05-24
Ackun, Jr., Jacob K. (Department: 3723)
Abrading
Machine
Sandblast
C451S099000
Reexamination Certificate
active
06896597
ABSTRACT:
A blasting apparatus includes a pressure vessel adapted to contain a particulate blasting medium and a liquid. The vessel includes an inlet and a bottom outlet. The interior of the vessel communicates via its bottom outlet with an opening in a conduit along which conduit an entraining pressurized gas can be fed from a pressurizing gas source. A pressurizing device is provided to pump liquid from a liquid source into the vessel behind its contents in terms of its contents' outflow from the vessel through the bottom outlet. A valve is provided to control the flow of pressurized gas along the conduit. Immediately upstream of the opening in the conduit is located a venturi so that the velocity of the pressurized gas is increased as it passes over the opening thereby increasing the quantity of particulate blasting medium entrained by the gas.
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Ackun Jr. Jacob K.
Harrison & Egbert
Quill International Industries PLC
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