Patent ID: 7695253

Claim:
A device for pumping and compressing fluids, comprising: first and second diametrically polarized cylindrical magnets such that the respective polarities attract or repel depending on the relative position thereof; a cylinder having an axis mounting said first and second polarized cylindrical magnets, said magnets facing each other and being centered on said cylinder axis; an inlet port and an outlet port in said cylinder; said first magnet being a rotor magnet adapted to rotate on said axis of said cylinder and fixedly restrained on a longitudinal position on said axis; said second magnet being a piston magnet adapted to move longitudinally along said axis in said cylinder toward or away from said rotor magnet, said piston magnet being kept from rotational movement; said inlet port being positioned to be open when said piston magnet is repelled by the mutual polarity of said magnets and closed when said piston magnet is attracted by the mutual polarity of said magnets as said rotor magnet rotates; and said outlet port is positioned to be open when said piston magnet is attracted by the mutual polarity of said magnets as said rotor magnet rotates and closed when said piston magnet is repelled by the mutual polarity of said magnets, wherein said rotor magnet includes a flat or groove on its cylindrical surface for communicating with said inlet port and said outlet port.