| 摘要 |
A joint compound sanding device ( 10 ) comprises a hand held housing ( 12 ) and a bottom plate ( 66 ) coupled to the hand held housing ( 12 ). The bottom plate ( 66 ) includes a plurality of dust collection apertures ( 74 ) extending through the bottom plate ( 66 ) between a vacuum manifold ( 64 ) and a bottom surface ( 76 ). A plurality of dust collection channels ( 78 ) are formed in the bottom surface ( 76 ) defining mesas ( 80 ) there between. The mesas support a porous joint compound sanding screen ( 54 ). A motor is coupled to hand held housing ( 12 ) and includes a rotating shaft coupled and rotating to a dust collection fan ( 30 ) such that air is drawn through a porous joint compound sanding screen ( 54 ), through the channels ( 78 ), through the dust collection apertures ( 74 ) into the vacuum manifold ( 64 ) and through the fan inlet ( 32 ) and expelling the air into an exhaust manifold ( 34 );
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