Rotodynamic pump with spherical motor
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United States of America Patent
Stats
-
Oct 5, 1982
Issued Date -
N/A
app pub date -
Feb 27, 1981
filing date -
Jan 13, 1975
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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