Vertical pump
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United States of America Patent
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-
May 20, 2003
Grant Date -
N/A
app pub date -
Jun 19, 2001
filing date -
Oct 21, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vertical pump which has a rotating body having an impeller arranged with its axial center being vertical, and a cylindrical rotor fixed to an upper portion of the impeller with their axial center being, aligned with each other. A main portion of the cylindrical rotor is composed of a good conductor. A casing for housing the rotating body with a gap rotatively and a rotary magnetic field generator facing the cylindrical rotor for applying a rotational force, to the cylindrical rotor are provided. As a result, the rotating body including the impeller and the cylindrical rotor is rotated without contacting with the casing.
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