Patent ID: 7299522

Claim:
A vacuum cleaning device powered by compressed air, comprising: an elongate canister having a top end, a bottom end, and an internal chamber; an elongate handle secured to the canister and extending above the top end of the canister and by which the canister can be held and manipulated; a venturi and nozzle assembly in fluid flow communication with the top end of the internal chamber adapted to be connected to a source of compressed air whereby compressed air is directed from the nozzle through the venturi to create a vacuum in the internal chamber and having an outlet for air passing through the venturi; a vacuum intake pipe secured to the canister and extending below the bottom end of the canister and into the chamber terminating in fluid flow communication with the chamber intermediate the top and bottom of the chamber; a baffle deflector in the chamber arranged with respect to the termination of the vacuum intake pipe to deflect air and any debris and liquid entering the chamber from the vacuum pipe downwardly toward the bottom of the chamber; a drain opening for draining liquid and debris from the chamber; means for closing the drain opening to prevent liquid and debris in the chamber from draining through the drain opening; and user operated means for opening the drain opening when desired to drain liquid and debris from the chamber.