Alternator rotor to stator integrated hrdrodynamic bearing
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United States of America Patent
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Issued Date -
Jun 16, 2016
app pub date -
Dec 11, 2014
filing date -
Dec 11, 2014
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Abstract
A hydrodynamic bearing is incorporated within an alternator electrical generating system and or electric motors having permanent magnet (PM) machine rotors wherein a fluid film bearing is integrated between the rotor assembly outer diameter and the electrical stator assembly inner diameter. The alternator rotor outside diameter is a bearing surface and a static sleeve bearing is positioned inboard of the electrical stator inner diameter, coaxially and central, wherein the static sleeve inner diameter is a bearing surface. An additional select material is incorporated to sleeve bearing inner diameter surface to prevent relative surface damage during none fluid film operating conditions.
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