Electrically driven dual pump
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United States of America Patent
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Jan 10, 2017
Grant Date -
Feb 20, 2014
app pub date -
Aug 8, 2013
filing date -
Aug 14, 2012
priority date (Note) -
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Abstract
In an electrically driven dual pump, a cylindrical outer rotor is rotatably disposed with respect to the inner circumferential surface side of the housing and has a plurality of permanent magnets on an outer circumferential surface of the outer rotor to constitute a motor section in cooperation with coils of a housing, a partitioning plate is disposed to partition an inner circumferential side of the outer rotor into a first pump chamber and a second pump chamber, and each of first and second inner rotors is rotatably disposed within the first and second pump chambers with a rotation center of each of the first and second inner rotors eccentric to the center of the outer rotor and constitutes a space against the outer rotor which is communicated with a corresponding one of the suction ports and the corresponding one of the discharge ports.
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