Rotodynamic pump with spherical motor

Details Rotodynamic pump with spherical motor Rotodynamic pump with spherical motor

1981-02-27

1982-10-05

Croyle, Carlton R.

Pumps

Motor driven

Electric or magnetic motor

F04B 1700

Patent

active

043526462

ABSTRACT:
A pump-motor unit of the type having an impeller connected to an armature and where the armature is separated from a stator by an air gap. The armature comprises a magnetic material having sufficient residual flux density whereby when the torque load on the impeller-armature structure is low, the magnet will act as a permanent magnet to provide synchronous rotation of the armature with respect to magnetic flux generated by the stator and when the torque load on the impeller-armature structure is high, will allow magnetic reversal whereby the armature will rotate asynchronously with respect to the magnetic flux generated by the stator.

REFERENCES:
patent: 3195467 (1965-07-01), Collet
patent: 3490379 (1970-01-01), Laing
patent: 3649139 (1972-03-01), Laing
patent: 3710156 (1973-01-01), Laing
patent: 3741690 (1973-06-01), Laing
patent: 3762839 (1973-10-01), Laing
patent: 3838947 (1974-10-01), Laing

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