Field subassembly for electric motors

A stator assembly for a dynamo electric machine comprising a plurality of laminations secured together to form a stack, the stack having at least two spaced pole pieces and a pair of coil slots per pole piece, a field coil in each one of said pairs of slots, a pair of apertures in said stack, said apertures being positioned on opposite sides of said stack and intermediate said pole pieces, each of said apertures comprising a generally circular central portion and at least one lateral extension, a pair of electrically insulated terminal block means positioned on said stack and mounted adjacent each of said apertures, said terminal blocks each having a base portion, the configuration of said base portion corresponding to the configuration of said stack at the location of said aperture, each of said terminal blocks having a mounting portion extending within said aperture, said mounting portion being partially misaligned relative to said lateral extension of said aperture for retaining said block on said stack.

A stator assembly for a dynamo electric machine comprising a plurality of laminations secured together to form a stack, the stack having at least two spaced pole pieces and a pair of coil slots per pole piece, a field coil in each one of the pairs of slots, apertures in said stack, each aperture being located in one of the regions between adjacent pole pieces, and electrically insulating terminal block means positioned on said stack, each of said blocks being associated with one of said apertures, and each of said blocks having an external configuration corresponding to the region between said pole pieces and such that said blocks do not extend either externally of said stack in a radial direction or within said stack, each of said blocks including a mounting portion extending within said aperture, said mounting portions each including at least one rib extending parallel to said laminations to assist in retaining said terminal block on said stack.

A stator assembly for a dynamo electric machine comprising a plurality of laminations secured together to form a stack, said stack having at least two spaced pole pieces and a pair of coil slots per pole piece, a field coil located in each one of said pairs of coil slots, a pair of apertures in said stack, each aperture being located in a region between two adjacent ones of said pole pieces, and electrically insulating terminal block means positioned on an end of said stack, said terminal block means including mounting means extending into and retained within each of said apertures, said terminal block means having an external configuration corresponding to the configuration of said stack, said configuration of said terminal block means being at most substantially coextensive with the configuration of said stack.

A stator assembly for a dynamo electric machine comprising a plurality of laminations secured together to form a stack, said stack having at least two spaced pole pieces and a pair of coil slots per pole piece, a field coil located in each one of said pairs of coil slots, a pair of apertures in said stack, each aperture being located in a region between two adjacent ones of said pole pieces, and electrically insulating terminal block means positioned on an end of said stack, mounting means associated with each of said apertures for retaining said terminal block means on said stack, said terminal block means having an external configuration corresponding to at least a portion of the external configuration of said stack, said external configuration of said terminal block means being at most substantially coextensive with the external configuration of said stack.

A stator assembly for a dynamo electric machine comprising a plurality of laminations secured together to form a stack, said stack having at least two spaced pole pieces and a pair of coil slots per pole piece, a field coil located in each one of said pairs of coil slots, a pair of apertures in said stack, and electrically insulating terminal block means positioned on an end of said stack, said terminal block means including mounting means extending into and retained within at least one of said apertures, said terminal block means having an external configuration substantially corresponding to the configuration of at least a portion of said stack, said configuration of said terminal block means being at most substantially coextensive with the configuration of said stack.

A field assembly having an electric motor comprising a plurality of laminations secured together to form a field stack, said stack having at least two spaced pole pieces and a pair of coil slots per pole piece, at least one aperture extending into said stack of laminations from one end thereof;

• and electrically insulating terminal supporting means positioned on one end of said stack, said terminal block means including mounting means extending into and retained within said at least one aperture, said terminal block means further including a base portion located on a portion of said stack, said base portion having an external configuration substantially corresponding to the configuration of at least a portion of said stack.