Patent ID: 7422170

Claim:
A grinder, comprising: a grinder housing comprising a grinder base and a grinder actuator detachably coupling with said grinder base, and forming a grinding compartment therebetween; a first grinding unit detachably coupling with said grinder actuator, wherein said first grinding unit comprises a first grinding plate and a plurality of first grinding knifes downwardly and spacedly extended from a bottom side of said first grinding plate; a second grinding unit detachably coupling with said grinder base, wherein said second grinding unit comprises a second grinding plate and a plurality of second grinding knifes upwardly and spacedly extended from said top side of said second grinding plate, wherein said grinding compartment is formed between said first and second grinding plates that said first and second grinding knifes are spacedly disposed within said grinding compartment, such that when said grinder actuator is turned with respect to said grinder base to drive said first grinding plate to rotate, said first and second grinding knifes are correspondingly moved within said grinding compartment to provide a grinding action; and a detachable coupling arrangement comprising a first magnetic element affixing to said first grinding plate, and a second magnetic element which is affixed to said second grinding plate to align with said first magnetic element, wherein said first magnetic element is magnetically attached to said second magnetic element to detachably couple said first grinding plate with said second grinding plate so as to allow said first and second grinding plates detaching with each other and rotating with each other to correspondingly move said first and second grinding knifes within said grinding compartment.