Patent ID: 6977457

Claim:
A core for a dynamo-electric machine, the core comprising a plurality of core sub-parts, which are assembled together in an axial direction of the core, wherein: at least one of the plurality of core sub-parts includes at least one first type fitting portion, each of which has at least one tapered wall surface, wherein each tapered wall surface of each first type fitting portion is angled relative to a corresponding direction parallel to the axial direction of the core; and at least another one of the plurality of core sub-parts includes at least one second type fitting portion, each of which has at least one tapered wall surface, wherein each tapered wall surface of each second type fitting portion is angled relative to a corresponding direction parallel to the axial direction of the core and is engaged with a corresponding one of the at least one tapered wall surface of an opposed one of the at least one first type fitting portion of a corresponding one of the at least one of the plurality of core sub-parts.