Patent ID: 6962302

Claim:
A combination of pepper mill and salt mill, comprising: a mediate member having two recesses defined in two ends of the mediate member respectively, a protrusion extending from an inside of each of the two recesses and a polygonal passage defined through each of the protrusions, a plurality of first notches defined in the inside of each recess; two connection members respectively received in the two recesses, each connection member having a hole through which the protrusion corresponding thereto extends, a plurality of second notches defined in a side of each connection member and located in alignment with the first notches, a bead movably received in a space enclosed by each of the aligned first and second notches, a depth of each of the first notches being defined such that the beads are partially received in the fist notches, the beads located at a joint surface of the connection member and the mediate member when the beads are partially received in the first notches, a depth of each of the second notches being defined such that the beads are completely received in the second notch, the beads located away from the joint surface of the connection member and the mediate member when the beads are completely received in the second notches, and two mill members each having a chamber defined therein and a polygonal driving shaft connected in each mill member so as to drive a grinding piece, the two mill members respectively rotatably installed in the two recesses of the mediate member and secured to the two connection member in the two recesses, the two driving shafts respectively engaged with the polygonal passages in the protrusions in the two recesses.