Magnetic drive, seal-less pump

A method of pumping a fluid, comprising the steps of:

• arranging at least one rotor interior to a pump housing;
• surrounding the at least one rotor with a magnetic drive assembly, the magnetic drive assembly including a generally cylindrical inner array of magnets encompassing the at least one rotor and a generally cylindrical outer array of magnets surrounding the inner array;
• coupling an inlet of the housing to a source of fluid;
• and
• transmitting torque to the at least one rotor at a location radially spaced from a longitudinal axis of the at least one rotor.

A magnetic drive, seal-less, axial pump, comprising:

• a generally cylindrical housing having an inlet and an outlet;
• at least one impeller mounted for rotation within the housing;
• and
• a magnetic drive surrounding the first rotor and the second rotor, the magnetic drive being configured to transmit torque to an outer portion of the at least impeller at a location spaced radially from a longitudinal axis of the housing for rotating the impeller;
• wherein the magnetic drive includes an inner magnetic array positioned interior to the housing and a outer magnetic array positioned exterior to the wall of the housing.