Patent ID: 8393050

Claim:
A portable cyclonic vacuum cleaner, comprising; a conic body having a conic wall, and upper plate removably positioned at a wide upper end of said conic wall and closing off a said wide upper end of said conic wall, and a narrow nose at a lower end of the conic wall, said upper plate having an air passage therein; a divider plate affixed within said conic body at a level midway between said lower end and said upper end thereof, defining a cyclonic chamber at a lower part of the conic body between the divider plate and the nose of the conic body, and defining a filter chamber in an upper part of the conic body between the divider plate and said upper plate at the upper end of the conic body, the divider plate having a central passage, and a vortex tube descending from said central passage of said divider plate into the cyclonic chamber; an air inlet conduit penetrating said conic wall below said divider plate and adapted to introduce into said cyclonic chamber a flow of air in which dust particles are entrained, the air inlet conduit being adapted to attach to a flexible vacuum hose; a dust collection drum positioned below said nose and having a lid closing off a top of the dust collection drum, the lid having a dust inlet opening; conduit means coupling the nose of the conic body to the inlet opening of the lid such that dust separated in the cyclonic chamber from said flow of air drops from said nose, through said conduit, into the dust collection drum, the conduit means forming a dust seal with said nose and said lid to block leakage of external air into the cyclonic chamber and said drum; an air filter supported beneath said upper plate, the air filter covering said air passage of the upper plate and being suspended within said filter chamber, and adapted to filter air that enters the filter chamber from the central passage of said divider plate, before the air leaves through the air passage of said upper plate; a vacuum blower positioned upon said upper plate and above said upper plate, and having an inlet opening that communicates with the filter chamber through the air passage of said upper plate; and frame means for positioning said conic body with respect to said dust collection drum and upon which said conic body is supported.