Patent ID: 7973446

Claim:
An electrical device, comprising: a coil; a rotor assembly rotatable in a rotational direction about an axis, the rotor assembly being generally disc-shaped and comprising a plurality of magnet portions and a plurality of rotor flux conducting portions, each of the plurality of rotor flux conducting portions being located between a pair of the plurality of magnet portions; and a stator assembly comprising a plurality of tape wound flux conducting core portions, wherein each of the plurality of tape wound flux conducting core portions has a pair of extensions, wherein each of the pair of extensions is oriented at an angle relative to the rotational direction of the rotor assembly, wherein at least a portion of each of the plurality of tape wound flux conducting core portions partially encompasses the coil; wherein the stator assembly further comprises a cassette-type portion for housing the plurality of tape wound flux conducting core portions, and wherein the cassette-type portion includes a plurality of walled sections for retaining the plurality of tape wound flux conducting core portions; and wherein the rotor assembly is moveable relative to the stator assembly such that each of the pair of extensions for each of the tape wound flux conducting core portions sequentially aligns with each one of the plurality of rotor flux conducting portions in a first position of the rotor assembly relative to the stator assembly during a 360° rotation of the rotor assembly, each tape wound flux conducting core portion forming a flux path with at least two of the plurality of rotor flux conducting portions when one of the pair of extensions of the tape wound flux conducting core portions is aligned with one of the plurality of rotor flux conducting portions.