Patent ID: 6022267
Filing Date: 2000-02-08
Classification: B24B,B25F

Abstract:
A grinder comprising,a power drive unit having a driving shaft, wherein a bevel gear is fixedly mounted on one end of said driving shaft, anda grinding unit releasably connected to said power drive unit, said grinding unit comprising a grinding bit and a transmission mechanism coupled between said grinding bit and said bevel gear of said power drive unit when grinding unit and power drive unit are connected, whereinsaid grinding unit comprises a retaining hole and a coupling flange disposed on opposite sides thereof at different elevations with respect to one another said power drive unit comprises a coupling slot on a side thereof which receives said coupling flange of said grinding unit, when power drive unit and grinding unit are connected said power drive unit also comprising a pair of lugs raised from a periphery of said power drive, a lever pivoted to said lugs, and a hook pivoted to said lever and forced by said lever to hook in said retaining hole of said grinding unit when power drive unit and grinding unit are connected.