Patent ID: 8870631

Claim:
A drive assembly for a grinder comprising: a housing device having a top and a bottom; a drive device connected with the housing device and having a motor mounted securely on the top of the housing device and having a rotatable shaft mounted through the top of the housing device; a driving wheel mounted in the housing device and securely mounted around the shaft of the motor; and a driving band engaged with the driving wheel; multiple transmission devices rotatably mounted in the housing device, each transmission device having a transmission wheel engaged with the driving band; multiple driven wheels, each driven wheel having an axial rod mounted through the bottom of the housing device; and a transmission band engaged with the transmission wheel and the driven wheels; and multiple grinding devices mounted outside the bottom of the housing device and respectively connected with the transmission devices, each grinding device having multiple grinding wheels respectively and securely mounted around the axial rods of the transmission devices.