초록 ▼

An electric motor including a stator having a stator core, a start winding and first and second main windings is described. The first main winding and the start winding are configured to form a lower number of poles than the second main windings. The stator core forms a stator bore. The motor also i

An electric motor including a stator having a stator core, a start winding and first and second main windings is described. The first main winding and the start winding are configured to form a lower number of poles than the second main windings. The stator core forms a stator bore. The motor also includes a rotor having a rotor shaft concentrically arranged axially of the stator core and a rotor core positioned concentrically with the rotor shaft. Secondary conductors are arranged axially of the rotor shaft and extend through the rotor core. A plurality of permanent magnets are located at an outer periphery of the rotor core and are magnetized to form a number of poles equal to the number of poles formed by the second main winding.

대표청구항 ▼

[ What is claimed is:] [27.] A lamination of a rotor for an electric motor, said lamination having a generally circular shape and an outer periphery, said lamination comprising a central opening sized to have a rotor shaft inserted therethrough, a plurality of secondary conductor openings arranged a

[ What is claimed is:] [27.] A lamination of a rotor for an electric motor, said lamination having a generally circular shape and an outer periphery, said lamination comprising a central opening sized to have a rotor shaft inserted therethrough, a plurality of secondary conductor openings arranged axially of said central opening and offset from said outer periphery, and a plurality of teeth portions at said outer periphery, wherein adjacent teeth portions define notches having a T-shape cross sectional shape.