In implementing the present invention, the spring less motor includes {HEAD ~ a buried magnet system} having {TAIL ~ a significant, linear centering force} and a high enough stiffness which acts as a spring with a certain stiffness to drive a piston a specific stroke length and to enable the spring less motor to be resonant at a frequency near an AC supply frequency 
having
In implementing the present invention , the spring less motor includes { HEAD ~ a buried magnet system } having { TAIL ~ a significant , linear centering force } and a high enough stiffness which acts as a spring with a certain stiffness to drive a piston a specific stroke length and to enable the spring less motor to be resonant at a frequency near an AC supply frequency
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL 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 OTH OTH OTH OTH OTH