Patent ID: 9102036
Filing Date: 2015-08-11
Classification: B24B

Abstract:
1. A dust evacuation system for a high speed power buffing assembly wherein said buffing assembly includes a chassis mounted for movement along a directed path over a surface to be polished, a motor mounted to said chassis, a high speed polishing buffer depending from said chassis driven by said motor in rotating contact with the floor along a preselected direction of rotation, the dust evacuation system, comprising: a hood depending from said chassis to encircle said high speed rotating buffer a peripheral skirt depended from said chassis immediate the periphery of said hood; said skirt, at the extremity adjacent the surface to be polished having grooves, said grooves inclined with respect to the radial direction of rotation of said buffer pad, said grooves inclined to slant from outside of the skirt to the inside of the skirt in the direction of buffer disc rotation, said grooves as inclined co-acting with said buffer when rotating to entrain air in the direction of buffer disc rotation from the outside of the skirt to the inside of the skirt; a dust collection aperture in the radial sidewall of the hood adjacent said buffer penetrating said hood for the outlet of dust from inside said hood to the exterior of said hood the aperture having an inlet on the inside of the hood and an outlet on the outside of the hood, the inlet being defined by a first end, a second end, a first side and a second side, the first end being wider than the second end; a chute, aligned and in communication with the dust collection aperture output on the outside of the hood; and a dust collection bag, communicated with said chute.