Patent ID: 6027399
Filing Date: 2000-02-22
Classification: B24B

Abstract:
A grinding tool accessory for containing and removing dust formed by rotary action of a grinding disk on a work surface, the accessory comprising:a flexible housing adapted for mounting on said grinding tool and defining a first chamber for collecting said dust prior to removal, said housing having an edge opposite and spaced from an outer perimeter of said grinding disk and defining a substantially uniform annular gap;said housing having an outlet adapted for connection to a source of vacuum and a dust collecting container;a brush extending from said edge and together with said grinding disk defining a second chamber in which said dust is created during said rotary action of said grinding disk, said brush having bristles with different lengths dimensionally related to said gap, said dust being drawn from said second chamber into said first chamber through said gap and thereafter being drawn from said first chamber into said dust collecting container by said source of vacuum; and,said housing having at least one hole communicating between said first chamber and ambient pressure, said at least one hole being sealable to adjust said vacuum as applied to said first chamber for optimizing containment and collection of said dust,whereby said dust is substantially completely contained and collected during said rotary action of said grinding disk as said grinding tool is moved over flat and contoured portions of said work surface.