PUMP
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United States of America Patent
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app pub date -
Aug 23, 2016
filing date -
Aug 31, 2015
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Abstract
An oil pump includes: an annular stator (2) having coils (22); a cylindrical outer rotor (3) having a plurality of permanent magnets (24); an inner rotor (4) positioned eccentrically to an inner peripheral side of the outer rotor (3); six linkage plates (5) which link between the outer rotor (3) and the inner rotor (4); and a drive shaft (6) on which the inner rotor (4) is attached. A pump action is obtained by rotating the outer rotor (3) and the inner rotor (action is obtained by rotating the outer rotor (3) and the inner rotor (4). Each of linkage plates (5) has a symmetrical cross sectional shape. A torque transmission is possible in the same way even if the outer rotor (3) is at a drive side and even if the inner rotor (4) is at the drive side.
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