Patent ID: 7646132
Filing Date: 2010-01-12
Classification: H02K,Y02E,Y10T

Abstract:
1. An axial gap dynamo electric machine, the machine comprising: a) an axle, b) at least one rotor disk in rotary co-axle connection to said axle and having at the periphery at least one circular array of permanent magnets with each magnetic of said disk having an alternating orientation of the poles with respect to the adjacent magnets, c) a stator coil comprising two or more arc shaped segments having a U-shaped cross-section so as to straddle both sides of said rotor disk for generating a Lorenz force, the stator coil comprises: a) a wire formed into a first series of serpentine coils disposed within a first common plane that defines an upper coil segment, b) a wire formed into a second series of serpentine coils disposed in second common plane that defines a lower coil segment, wherein the first and second common planes are parallel, c) each of said first and second series of serpentine coils circumscribing an arced segment of a circle by a series of joined contiguous wire segments that start at the outer periphery of the arced segment with, i) a first radial segment having an outer end and inner end; ii) an inner tangential segment connected at a first end to the inner end of the first radial segment; iii) a second radial segment, having an outer end and inner end, the inner end connect to the other second end of the inner tangential segment, iv) and an outer tangential segment having a first end connected to the outer end of the second radial segment, and an second end disposed on the outer periphery of the arced segment, d) wherein said first and second series of serpentine coils are connected at least at one end by a coil segment on the outer periphery of the arced segment that is disposed in a plane perpendicular to the first and second common planes and links an outer end of a radial segment of said first series of serpentine coils to an outer end a radial segment of said second series of serpentine coils.