Patent ID: 6346760
Filing Date: 2002-02-12
Classification: H02K

Abstract:
A stator assembly comprising:a stator core including a plurality of coaxially stacked laminations, each said lamination being defined by a plurality of lamination sectors, each said lamination sector having at least one part cutout defined in an outer peripheral edge thereof, said cutouts being axially aligned among said stacked laminations to define a plurality of longitudinally extending grooves generally parallel to a center axis of said stacked laminations; a keybar received in each said groove, said keybar having an outer peripheral surface complimentary to a shape of a respective said groove so as to be radially received therein; at least first and second core flange assemblies being disposed respectively at each axial end of said stacked laminations, each said core flange having a plurality of apertures defined therethrough for respectively receiving longitudinal ends of each said keybar; and a plurality of compression bands provided at spaced locations along the axial length of said stacked laminations, between said first and second core flange assemblies, for holding said keybars in said longitudinal grooves and for radially compressing said lamination sectors comprising said stacked laminations; and a stator frame including an outer housing wall and a plurality of frame plates projecting radially inwardly therefrom, said frame plates including first and second frame support plates secured respectively to said first and second core flange assemblies to mount said stator core within said stator frame and a plurality of frame section flanges disposed at spaced locations intermediate said frame support plates.