Patent ID: 6644576
Filing Date: 2003-11-11
Classification: B02C

Abstract:
A blade sweep and pulverizer comprising:a pulverizer including a housing with a floor, a rotary grinding bowl in the housing above the floor, a rotary spindle in the housing for rotating with the grinding bowl about a vertical axis, said blade sweep including, a blade, blade mounting means for supporting said blade vertically above said floor in a down position for sweeping and also for supporting said blade for rotation rearward about a substantially horizontal axis above said blade to a raised position to clear reject material on said floor, said blade mounting means including a mounting base adapted to mount to rotate with said spindle about said vertical axis and adapted to extend radially out from said bowl to near an inside wall surface of said housing, an axle extending along and in substantially parallel relation to said mounting base, said axle supported by said mounting base for rotation about a longitudinal axis of said axle and rotate relative to said mounting base, pivot bracket means along said axle, said pivot bracket means being rigidly fastened to said axle to rotate said axle, and blade biasing means supported by said mounting base arranged to urge said blade to said down position and resist movement to said raised position when said blade is impacted by said reject material during the rotation of said blade over said floor about said vertical axis.