Emerson Electric Company

Ray D Heilman

Andrew F Poag

Joseph L Tevaarwerk

Mauro Gavello

Jeffrey Scott Sherman

A rotor assembly for a rotating machine includes a substantially cylindrical main rotor body having an outer surface. A plurality of longitudinal ribs project from the outer surface of the main rotor body. A plurality of primary recesses are defined by adjacent ribs and a secondary recess is defined in the outer surface within at least one primary recess. A magnet is positioned within at least one primary recess, and a layer of adhesive between the magnet and the outer surface of the main rotor body fills the secondary recess. Magnet retaining elements. in the form of either an encapsulation layer, star-shaped retainer or elongated retaining members may also be used. The magnet retaining elements may be used alone or in combination with the adhesive layer between the magnets and the main rotor body.

Method of assembling a rotor assembly for a rotating machine

A rotor assembly for a rotating machine includes a substantially cylindrical main rotor body having an outer surface. A plurality of longitudinal ribs project from the outer surface of the main rotor body. A plurality of primary recesses are defined by adjacent ribs and a secondary recess is defined in the outer surface within at least one primary recess. A magnet is positioned within at least one primary recess, and a layer of adhesive between the magnet and the outer surface of the main rotor body fills the secondary recess. Magnet retaining elements in the form of either an encapsulation layer, star-shaped retainer or elongated retaining members may also be used. The magnet retaining elements may be used alone or in combination with the adhesive layer between the magnets and the main rotor body.

Rotor assembly for a rotating machine

A centrifugal actuator for mounting on a rotor shaft, the actuator being capable of movement from a first or start position to a second or run position, is provided having a base portion with a pair of opposed, mirror image actuator levers biased towards the first position. The levers are urged to the second position by centrifugal force when the shaft rotates. The levers are cooperatively connected to a sleeve, the sleeve being capable of axial movement allowing the sleeve to move from the first to second position in response to the movement of the levers. The sleeve has a collar and a shoulder portion for the seating of the actuator levers. Unique ramp structures extending from the sleeve collar to the seats on the shoulder cause the actuator levers to seat properly during assembly thereby allowing automated assembly and preventing field failure due to misseating of the actuator arms.

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St. Louis, MO, United States of America

Ray D Heilman