Magnetic pump
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United States of America Patent
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Mar 30, 2004
Grant Date -
Mar 20, 2003
app pub date -
Sep 4, 2002
filing date -
Sep 19, 2001
priority date (Note) -
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Abstract
A brushless direct current magnetic pump includes a drive shaft that passes through and that is coupled to a magnet carrier. The magnet carrier with an annular sleeve with at least six outer ribs that define at least six slots that extend axially along the sleeve. The at least six slots accommodate at least six bar magnets and at least six sensor magnets. A Hall effect sensor is included in the motor assembly to provide positional information of the sensor magnets to a controller for improved speed control.
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