Discoidal winding for dynamoelectric machines

A discoidal winding structure for an axial gap dynamoelectric machine consisting essentially of a plurality of coils overlapped in a circular array and bonded together with a bonding medium to provide a unitary structure having an annular disc portion containing the coil sides and ring portions on the inner and outer edges of the disc containing the coil end-heads and coil end conductors, said coil having a pair of sides disposed radially at approximately one pole pitch and end-heads joining the corresponding ends of the coil sides, said coil having a relatively long outer end-head and a relatively short inner end-head, said coil having one coil side and a significant length of the end-head thereon lying on one side of a plane, the other coil side and a significant length of the end-head thereon lying on the other side of said plane, and a cranked end-head portion traversing said plane and interconnecting said lengths of end-head, said one sides of the coils being interposed respectively between two of said other sides of adjacent coils.

A coil for a discoidal winding structure for use in an axial gap dynamoelectric machine, said winding structure having an annular disc portion containing the coil sides and inner and outer ring portions containing the coil end-heads and coil end conductors, said coil comprising a pair of coil sides disposed radially at approximately one pole pitch on opposite sides of a plane, at least one end-head joining one of the corresponding ends of said coil sides, and conductors on the other corresponding ends of said coil sides completing the coil circuit, said end-head having first and second portions of major length connected to the respective coil sides and disposed on opposite sides of an adjacent plane and interconnected by a short cranked portion traversing said adjacent plane.

A coil for a discoidal winding structure for use in an axial gap dynamoelectric machine, said winding structure having an annular disc portion containing the coil sides and inner and outer ring portions containing the coil end-heads and coil end conductors, said coil comprising a pair of coil sides disposed radially at approximately one pole pitch on opposite sides of a plane, at least one end-head joining one of the corresponding ends of said coil sides, said conductors on the other corresponding ends of said coil sides completing the coil circuit, said end-head having first and second portions of major length disposed substantially parallel to the plane with one portion offset differently than the other portion from the plane and with both portions running along the plane, and said end-head also having a short cranked portion located between said long portions.