Patent ID: 8167964

Claim:
A cyclonic dust collection chamber for use with a vacuum source wherein the chamber comprises: a base opposite an apex and sidewalls extending therebetween, said apex and sidewalls having interior surfaces, wherein said interior surfaces are substantially smooth; an outflow passage extending from said base toward said apex, said outflow passage having an outflow aperture distal from said base; said outflow aperture further having a longitudinal axis; an inflow passage extending from an inflow aperture contained in said sidewalls proximate said apex away from said base, said inflow passage having a longitudinal axis, wherein said longitudinal axes of said inflow passage and said outflow passage are substantially parallel and wherein said longitudinal axes of said inflow passage and said outflow passage are not aligned; a filter positioned over said outflow aperture whereby air exiting said chamber via said outflow aperture must pass through said filter; wherein said vacuum source is in operative fluid engagement with said outflow passage whereby operation of said vacuum source will draw air into said chamber via said inflow passage; through said chamber along a cyclonic path; and out of said chamber via said outflow passage; and wherein said interior surfaces of said apex and said sidewalls are substantially free of any aerodynamic obstructions protruding therefrom.