SYNCHRONOUS ELECTRIC MOTOR FOR THE OPERATION OF A PUMP AND THE RELATED MOTOR PUMP
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United States of America Patent
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Issued Date -
Jan 2, 2014
app pub date -
Mar 13, 2012
filing date -
Mar 15, 2011
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Abstract
A synchronous electric motor for operating a pump includes a motor body, a stator and a rotor coupled to an impeller of the pump. The motor also comprises a cylindrical element that extends towards the inside of the motor body from one of its outer walls so as to define a first cylindrical cavity open to the outside to insert inside the rotor, wherein the rotor has a circular cross section essentially corresponding to the inner section of the cylindrical element so that the rotor is in contact with the cylindrical element and then there is a friction between the rotor and the cylindrical element when the rotor rotates, and the rotor is shaftless and axially and directly coupled to the impeller of the pump.
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