a piston assembly placed through {HEAD ~ a hole} of {TAIL ~ the buried magnet system} and operatively connected to the buried magnet system, wherein the reciprocating of the buried magnet system causes reciprocation of the piston assembly within a cylinder to create oscillating pressure within the cylinder, wherein 
a piston assembly placed through { HEAD ~ a hole } of { TAIL ~ the buried magnet system } and operatively connected to the buried magnet system , wherein the reciprocating of the buried magnet system causes reciprocation of the piston assembly within a cylinder to create oscillating pressure within the cylinder , wherein
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH