Portable massaging apparatus

A portable massaging apparatus comprising:

• (a) a holding frame (13);
• (b) a pair of driving shafts (11 and 12) each of which is hold by said holding frame through a bushing in order to rotate freely, and each of which is placed opposite and slant each other on the holding frame so that the distance between center axes of the driving shafts increases along with the distance from the root position to the top position of each driving shaft;
• (c) a pair of slant shafts (5 and 6) each of which is extended from the top position of said each driving shaft keeping each angle between the center axis of the slant shaft and the center axis of the driving shaft to an approximately same constant value;
• (d) a pair of massaging balls (3 and 4) that are attached to the tops of said slant shafts so that each massaging ball rotates freely around the center axis of each slant shaft;
• and
• (e) a driving mechanism that rotates said pair of driving shafts at the same speed in the opposite direction so that each of said slant shafts moves synchronously and mirror symmetrically each other, wherein each of said massaging balls makes a head turning motion by rotation of each driving shaft as each slant shaft goes round along the surface of a virtual handstand cone having its peak on the center axis of the corresponding driving shaft.