Abstract: A centrifugal casting apparatus including: a lower half-mold (10) mounted on a support (12) provided with driver for rotation about a substantially vertical central axis (14), the lower half-mold (10) being a solid of revolution having a first central cavity (36); an upper half-mold (16) facing the lower half-mold (10), the upper half-mold (16) being a solid of revolution having a second central cavity (56); and a device for causing the axial movement of the half-molds (10, 16) towards and away from each other. The lower half-mold (10) and the upper half-mold (16) each have at least one passage (46, 66) which puts the respective central cavity (36, 56) into communication with the outside through an outlet aperture through which the central axis (14) does not pass.

Abstract: The centrifugal casting apparatus comprises: a lower half-mould (10) mounted on a support (12) provided with driving means for rotation about a substantially vertical central axis (14), the lower half-mould (10) being a solid of revolution having a first central cavity (36); an upper half-mould (16) facing the lower half-mould (10), the upper half-mould (16) being a solid of revolution having a second central cavity (56); and means for causing the axial movement of the half-moulds (10, 16) towards and away from each other. The lower half-mould (10) and the upper half-mould (16) each have at least one passage (46, 66) which puts the respective central cavity (36, 56) into communication with the outside through an outlet aperture through which the central axis (14) does not pass.

Abstract: The stator is formed by a pack (10) of stacked magnetic laminations (12), each of which has a central opening (14) and a plurality of peripheral holes (18), in such a way that the overlapping of identically shaped holes (18) in the laminations (12) defines respective passages through the pack (10). The faces of the laminations (12) are substantially flat and retaining means are associated with the holes (18) in an end lamination (12a) of the pack (10), these means protruding into the openings of the respective holes (18) in the end lamination (12a) without interfering with the other laminations (12) of the pack (10).

Abstract: The stator is formed by a pack (10) of stacked magnetic laminations (12), each of which has a central opening (14) and a plurality of peripheral holes (18), in such a way that the overlapping of identically shaped holes (18) in the laminations (12) defines respective passages through the pack (10). The faces of the laminations (12) are substantially flat and retaining means are associated with the holes (18) in an end lamination (12a) of the pack (10), these means protruding into the openings of the respective holes (18) in the end lamination (12a) without interfering with the other laminations (12) of the pack (10).