Newage International Limited

Cummins Generator Technologies Limited

Stephen Frederick Allen

Nazar Al-Khayat

Cleveland Mills

Jeremy Owen Dowdall

Neil Brown

Lawrence Haydock

John Ernest Clive Bean

Christopher Paul Maddison

Martin Nicholls

Neil Lovell Brown

Martin Nicolas

A rotor disc assemblyfor an AC machine includes a rotor disc, permanent magnetsand a spider. The rotor dischas a circumferential lipprojecting from a surface thereof. The permanent magnetsare positioned in a circular array on the surface of the rotor disc, with constant angular pitch, and so as to lie against the lip. The spider includes an annular base portion, with a plurality of armsprojecting radially outwards therefrom. The spideris fixed to the surface of the rotor discsuch that each armis between and abuts a respective juxtaposed pair of the permanent magnets. The armsand the membersare each provided with cooperating wedge-shaped cross sections such that each armconstrains the respective two permanent magnetsboth axially and tangentially on the surface of the rotor disc.

Method of fixing unmagnetized magnetizable members to a rotor disc and a rotor disc

A rotor disc for an electrical machine is disclosed. The rotor disc comprises a series of magnetisable members arranged in a circumferential series on a surface thereof and against peripheral retaining structure of the disc. The disc also includes a retainer fixable to the surface and arranged for assisting in retaining the members at least axially on the surface when so fixed. The retainer is arranged to abut at least one of a substantially circumferentially and substantially tangentially extending, radially inner part of each member and thereby to provide the axial retention.

Rotor disc for an electrical machine and a retainer

A toroidal AC generator includes an outer casing and an annular stator core of ferromagnetic material which is encased in a hollow annular cover of plastics material and which is fixed to the casing between the discs of a twin disc rotor. Each rotor disc carries a circular array of alternately polarised permanent magnets which face the stator core. The hollow annular cover is a two-part moulding and is formed of radially inner and outer ring portions which are joined by circular arrays of radial ribs which extend across the opposed radial faces of the annular core and form open-ended radial passages for the electrical phase windings which are wound around the cover. The ribs project radially beyond the radially outer ring portion and form hooks around which a winding may be retained temporarily during winding.

Toroidal electrical machine and an annular winding carrier therefor

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Stamford, United Kingdom

Stephen Frederick Allen