Closed slot rotor construction.

摘要

A rotor lamination (50) for use in a dynamo-electric machine of the kind having a stacked laminated rotor, is formed of a flat circular plate of ferromagnetic material having a number of equally circumferentially spaced closed slots (56). Each of the slots (56) is substantially V shaped at an upper slot region (58) near the circumference of the plate (50), and is symmetrical about a radial center line. Each leg of the V forms an angle of about 30 degrees with respect to a line drawn perpendicular to the radial center line of the slot.